4 March

Newest 'libx264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/libx264

• 07:20
  Convert .mp4 to .ts using H264 at constant framerate 25fps [closed] - losing-my-marbles Newest 'libx264' Questions - Stack Overflow
  I've been trying to do this conversion for a couple of days reading through forums ffmpeg -i in1.mp4 -vcodec libx264 -s 720x576 -vf "fps=25"-vsync cfr -b:v 2300k -acodec aac -b:a 128k out1.ts I've tried the below flags found in other forums. ... -r 25 -vf fps=25 -filter:v fps=25 -filter:v fps=fps=25 I then read the file using mediainfo and keep getting the same result; Frame rate mode : VFR Frame rate mode : Variable Frame rate : 46.875 Frame rate : 46.875 FPS (1024 (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:48
  How can I concatenate 2 files in FFMPEG with different SAR and DAR values? [duplicate] - SBiswas Newest 'ffmpeg' Questions - Stack Overflow
  I am a newbie in FFMPEG. I have two MOV files of same 1920:1080 resolution, 25fps, 10s duration. But file1 has SAR 0:1 and another has SAR 135:136, DAR=30:17. I want to merge these two files and have used the code below for that: ffmpeg -i file1.mov -i file2.mov -filter_complex "[0:v]scale=1920:1080:force_original_aspect_ratio=1[v0]; [1:v]scale=1920:1080:force_original_aspect_ratio=1[v1]; [v0][v1]concat=n=2:v=1[v]" -map [v] output.mov But I am not able to and this is the error I am getting. [Parsed_concat_2 ⓐ 00000215182fd3c0] Input link in0:v0 parameters (size (...)
• 18:19
  FFmpeg av_hwdevice_ctx_create returns ENOMEM - lnogueir Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to perform h264 video encoding on a GPU using the ffmpeg's vaapi library. I have been following this example from ffmpeg Github repo. It fails for me here: AVBufferRef* vaapi_encoder; int err = av_hwdevice_ctx_create(&vaapi_encoder, AV_HWDEVICE_TYPE_VAAPI, NULL, NULL, 0); This returns -12, which maps to ENOMEM (out of memory) error, but that doesn't make sense to me because I have plenty of memory. For reference, this is my output after running 'vainfo': libva info: VA-API version 1.7.0 libva info: Trying to (...) -- example
• 16:59
  How to install avconv on Ubuntu 18.04.5 Bionic - UrviG Newest 'ffmpeg' Questions - Stack Overflow
  I want to use avconv for audio related operations on my Ubuntu Bionic 18.04.5 system, but it's not getting installed as a part of the following packages. sudo apt-get install ffmpeg:i386 sudo apt-get install ffmpeg I still get.. avconv: command not found

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 18:11
  Evolution #4678 (Nouveau): Permettre les mises à jour sans affichage du HTML de minipres pour com... - cy_altern - Revisions : SPIP
  La fonction maj_base() en charge des upgrades de la base de données du core ou des plugins fait appel à la fonction maj_while() (https://git.spip.net/spip/spip/src/branch/master/ecrire/base/upgrade.php#L170) en lui passant comme 5ème paramètre true ce qui déclenche l'affichage du HTML de minipres : upgrade.php#L170 : $res = maj_while($version_installee, $cible, $GLOBALS['maj'], 'version_installee', 'meta', $redirect, true); ...or lors des mises à jour de la BDD en spip-cli il n'est pas du tout pertinent/souhaitable d'avoir cet affichage du HTML. Mais puisqu'il se fait via un ob_flush() (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:14
  Is there a way to use the ffmpeg binary/unix executable in a py2app application to run ffmpeg on computers without it installed? - Human Newest 'ffmpeg' Questions - Stack Overflow
  I wrote a small python script that is essentially just a text to speech script. It uses the pydub - audiosegment python library to convert the mp3 from gTTS to an ogg that can be played in pygame. A link to my github repository can be found here: https://github.com/AnupPlays/TTS this is the main function: def webscrape(): global x global b b.state(['disabled']) src = "sound.mp3" dst = "sound.ogg" murl = str(url.get()) response = requests.get(murl) response.raise_for_status() parse = bs4.BeautifulSoup(response.text, (...) -- https://github.com/AnupPlays/TTS
• 16:00
  Can I pipe multiple ffmpeg outputs to different pipes? - mr. rogers Newest 'ffmpeg' Questions - Stack Overflow
  I have an AWS workflow that streams an audio or video file from S3 to ffmpeg inside a lambda. Which then streams the encoded output back to S3. I want to extend that flow to generate DASH content. On my local device, I can generate the MPD file and the encoded AV files. And there's the problem. Encoding to dash generates at least two files, even with the -single_file flag. Can I limit the dash export to just the video or MPD file? Or can I somehow pipe the multiple outputs separately through some flag magic? Thanks in (...)
• 15:30
  Download billboard hot 100 (but only 50) mp3 files - Atlas Newest 'ffmpeg' Questions - Stack Overflow
  Yo yo yo. I got this insane idea to get 50 of the billboard hot 100 songs, download them into mp3 files, and then put them on private online radio. Problem is, the way I do it doesn't download each file one by one, it puts all the music together in one mp3 file. Here's my code so far (terrible, I know... I just wanna throw this together really quickly) const getChart = require("billboard-top-100"); const ffmpeg = require("fluent-ffmpeg"); const mkdir = require("fs"); const ytdl = require("ytdl-core"); const YT = (...)
• 14:03
  FFMPEG change -f segment commands to -f hls commands - user72261 Newest 'ffmpeg' Questions - Stack Overflow
  I am currently making a script in PHP to run some ffmpeg commands to take a concat and create a live streaming hls file from it. I was using an old version of ffmpeg and -f segment and this worked fine but I have had to update ffmpeg on the system for something else so I have been updating everything to use -f hls however this is creating issues the stream with -f hls is no longer live and keeps stopping and restarting at the end of every 5-10 seconds each segment should be around 6 seconds. this is my old command exec("ffmpeg -y -nostdin -hide_banner -re -f concat -safe 0 (...)
• 13:25
  Capture and Record Desktop Screen with/as Webcam Video - Bilal Ahmed Yaseen Newest 'ffmpeg' Questions - Stack Overflow
  Webcam lets others view either still pictures or motion video of a user or other object in front of it. I want to configure Webcam in a way that it start capturing desktop screen instead of what is in front of it. I want to manipulate desktop screen captured through Webcam using FFMPEG library. Such as: ffmpeg -f dshow -i video="Integrated Webcam" -f mp4 cam_stream.mp4 I want to use this same application to capture my Desktop Screen that will be possible just in that case when Webcam will be able to capture my Desktop Screen instead. So above command will (...)
• 13:09
  Capture Windows screen with ffmpeg - kamae Newest 'ffmpeg' Questions - Stack Overflow
  The ffmpeg is cross-platform and very powerful software to handle video/audio or to stream it. On Linux ffmpeg can capture X11 screen with a command below: ffmpeg -f x11grab -r 25 -s cif -i :0.0 out.mpeg But is it possible to grab Windows Desktop with ffmpeg? -- ffmpeg
• 13:08
  How can I get ffmpeg to stream my webcam? - nonlinearmind Newest 'ffmpeg' Questions - Stack Overflow
  I want to stream my webcam and managed to stream it successfully to bambuser.com using the following, but need to be able to view it locally. This successfully posts it to babuser: ffmpeg -v debug -f alsa -ac 1 -i hw:1,0 -acodec libmp3lame -itsoffset 00:00:00 -f video4linux2 -s 360x240 -i /dev/video0 -r 15 -f flv -ar 44100 rtmp://522f4133d0.fme.bambuser.com/b-fme/0bacf5bb634dbbbd52bdd99d71406dc6f362c I've tried the following, but get "RTMP_Connect0, failed to connect socket. 111 (Connection refused) rtmp://localhost:8090/: Operation not (...)
• 12:52
  Extract specific frames of youtube video without downloading video - Kashish Arora Newest 'ffmpeg' Questions - Stack Overflow
  I need to extract specific frames of an online video to work on an algorithm but I don't want to download the whole video because that would make it highly inefficient. For starters, I tried working with youtube videos. I can download whole of the video using youtube-dl in this way: ydl_opts = 'outtmpl': r'OUTPUT_DIRECTORY_HERE', with youtube_dl.YoutubeDL(ydl_opts) as ydl: ydl.download([url]) And then I can capture individual frames. I need to avoid downloading the whole video. After some research, I have found that ffmpeg might (...)
• 12:26
  How to resolve the source of an RTSP server unstable problem? - EricLu Newest 'ffmpeg' Questions - Stack Overflow
  I have already build an application by gstreamer rtsp-server with its appsrc. It's workingflow like test-appsrc. And I implement static void need_data (GstElement * appsrc, guint unused, MyContext * ctx) function using read from a IP camera's RTSP stream cv::VideoCapture in need_data. All this function is working well and it's have worked already for a day. However, I must use some algorithm deal with the IP camera source by OpenCV. When I do this algorithm at need_data. The RTSP Server seems unstable it always print something like the (...) -- test-appsrc
• 12:20
  ffmpeg error: Could not write header for output file #0 (incorrect codec parameters ?): No such file or directory - Syed Uddin Newest 'ffmpeg' Questions - Stack Overflow
  I have the following files in the Convert_video_to_HLS folder on my Desktop: input output script.sh video.key video.key.info The command I'm running is: bash ./Desktop/Convert_video_to_HLS/script.sh ./Desktop/Convert_video_to_HLS/input ./Desktop/Convert_video_to_HLS/video.key.info ./Desktop/Convert_video_to_HLS/video.key ./Desktop/Convert_video_to_HLS/output The contents of script.sh #!/bin/sh DIR=$1 DIR_KEY_INFO=$2 DIR_KEY=$3 OUTPUT=$4 echo $DIR # List all mp4 files on folder MP4_DIRS=$(find $DIR -type (...)
• 12:20
  FFmpeg Error while filtering: Cannot allocate memory While Using Gifs Overlay Over Video - Abhishek Sharma Newest 'ffmpeg' Questions - Stack Overflow
  creating overlay gif over video but One gif is stoping after one loop and all other gifs are in a continuous loop by default in the file and FFmpeg throws an error Command: ffmpeg -y -i "2021_03_04_03_54_43.mp4" -f lavfi -i "color=000000:s=540x960" -ignore_loop 0 -i "2021_03_04_03_55_08.gif" -ignore_loop 0 -i "2021_03_04_03_56_19.gif" -ignore_loop 0 -i "2021_03_04_04_02_29.gif" -ignore_loop 0 -i "2021_03_04_04_03_50.gif" -filter_complex (...)
• 11:41
  ffmpeg ssim gives me bad result for both high quality and bad quality compression - idoo Newest 'ffmpeg' Questions - Stack Overflow
  I want to use ssim to evaluate the compression quality. However, when I calculate the ssim values I get very similar (and low) results for very good lossless compression and for very bad. What do I do wrong ? For compression I do: ffmpeg -r 6 -y -i %005d.bmp+ -c:v libx264 -crf 1 x264_medium_crf_1.avi ffmpeg -r 6 -y -i %005d.bmp+ -c:v libx264 -crf 51 x264_medium_crf_51.avi For ssim: ffmpeg -i x264_medium_crf_1.avi -i ref.avi -lavfi "ssim;[0:v][1:v]psnr" -f null - ffmpeg -i x264_medium_crf_51.avi -i ref.avi -lavfi "ssim;[0:v][1:v]psnr" -f (...)
• 11:05
  How to use youtube-dl to record live stream in parts - Vikral Newest 'ffmpeg' Questions - Stack Overflow
  Just wondering if that's possible or not to break an m3u8 live stream recording every hour and restart the recording again. I don't want to press Ctrl-C every hour to stop the recording and restart it again to get a playable downloaded file. Instead, I want to automate this. Does anyone know if that is possible?
• 10:24
  How to send all traffic from tcp port 1935 through http_proxy? - Karol Gruszka Newest 'ffmpeg' Questions - Stack Overflow
  I'm using a server that uses an internal proxy to access the internet. In my use case, I need to live stream an application using FFmpeg to a Restream.io using RTMP protocol which can be run using port 1935. The problem is that FFmpeg probably doesn't make any use of environment variables like $http_proxy and it's unable to resolve live.restream.io hostname. So far I tried configuring proxychains by adding the internal proxy to the proxychains proxy list and it worked for a simple telnet connection without any problems - proxychains4 live.restream.io 1935 but (...) -- proxychains
• 10:05
  How to merge two videos without losing the quality using ffmpeg - Vinayak Newest 'ffmpeg' Questions - Stack Overflow
  Currently am using this command but the quality was decreasing so suggest me how to merge without losing the quality "-y", "-i", path_real, "-i", outputfile4, "-strict", "experimental", "-filter_complex", "[0:v]scale=480x640,setsar=1:1[v0];[1:v]scale=480x640,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1", "-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "480x640", "-vcodec", "libx264", "-crf", "27", "-q", "4", "-preset", "ultrafast", (...)
• 09:35
  ffmpeg Problem with converting. ffmpeg converts image attachments to stream? - For Fun Newest 'ffmpeg' Questions - Stack Overflow
  I have a mp4 file with cover.jpg as attachments but when I use -c copy to convert to mkv the image won't stay as attachments ffmpeg changes it to stream 0:2? ffmpeg -i 'file.mp4' -c copy -map 0 'output.mkv'
• 08:18
  ffmpeg: How to save SSIM and PSNR to a file? - idoo Newest 'ffmpeg' Questions - Stack Overflow
  I'm a ffmpeg newbie. I would like my script to output the average PSNR and average SSIM values to a file. (but not the values for every frame) I can output them to the standard output but not to a file. I use this line: ffmpeg -i ref.avi -i compressed.avi -lavfi "ssim;[0:v][1:v]psnr" -f null - I understand I have to change something here: "-f null -" , but I cannot make it work.
• 07:09
  FFMPEG muxed as a private data stream and may not be recognized upon reading - Jimmy Newest 'ffmpeg' Questions - Stack Overflow
  I've came across a mkv with a codec of hevc , while trying to either convert it to m3u8 or mp4 I received this following message: [mpegts ⓐ 0x7f94de014600] Stream 1, codec flac, is muxed as a private data stream and may not be recognized upon reading. Is there something wrong with my ffmpeg parameters? To m3u8: #1 : ffmpeg -i aaa.mkv -s 1920x1080 -codec copy -bsf:v hevc_mp4toannexb -start_number 0 -hls_time 10 -segment_time 10 -hls_list_size 0 -f hls aaa.m3u8 #2 : ffmpeg -i aaa.mkv -s 1920x1080 -codec copy -c:v libx264 -bsf:v hevc_mp4toannexb (...)
• 05:49
  Is it possible to stream the output of an ffmpeg command to a client with dot net core? - Inondle Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to take two videos and transform them with ffmpeg into a single video. It works great if you take the two videos, run them through ffmpeg and then serve that file up via an API. Unfortunately the upper range for these videos is ~20 minutes, and this method takes too long to create the full video (~30 seconds w/ ultrafast). I had an idea to stream the output of the ffmpeg command to the client which would eliminate the need to wait for ffmpeg to create the whole video. I've tried to proof this out myself and haven't had much success. It could be my (...)
• 03:54
  FFMPEG m3u8 encoding change extension of TS files to something else - Dilshan Newest 'ffmpeg' Questions - Stack Overflow
  I'm using below command to encrypt a MP4 video into a m3u8 type. const cmd = "ffmpeg"; const args = [ "-i", `$input`, "-c", "copy", "-bsf:v", "h264_mp4toannexb", "-hls_list_size", "0", "-hls_time", "10", "-hls_key_info_file", "enc.keyinfo", `output/$outputFileName.m3u8`, ]; This works and output the data.but is there any possible way to tell ffmpeg to not add .TS extensions to the playlist items ? I manually update one of the playlist item in m3u8 file with some random file extension and it (...)
• 01:32
  ffmpeg ignores every framerate option, locking the result to 25 fps - Goury Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers No matter what I do, ffmpeg just ignores everything and encodes it as if it's 25fps. -framerate 60 does nothing -t 60 does nothing -r 60 makes it to interpolate frames -r:v 60 does the same -vf "fps=60" does the same -vframes makes it to end the encoding prematurely Everything google shows seems to be outdated, including ffmpegs own (...)
• 00:27
  Heroku: [Errno 13] Permission Denied: /app/ffmpeg.exe - GetTwoBirdsStonedAtOnce Newest 'ffmpeg' Questions - Stack Overflow
  So I made a python bot and I wanted to equip it with the ability to play music. I have been following this tutorial. Unfortunately when I run the play command I get the [Errno 13] Permission Denied: /app/ffmpeg.exe error. I have included the ffmpeg.exe file in my project branch as well as all of the ffmpeg files. I host this bot on heroku. I ran heroku logs --tail but this doesn't show me anything, I see the error as the output on a discord channel. Before you suggest it, I already have ran this: heroku config:set DISABLE_COLLECTSTATIC = 1. Of course to no avail... Here's (...) -- this tutorial.
• 00:01
  How to decode a 2D video with the H264? [closed] - RyTest Newest 'ffmpeg' Questions - Stack Overflow
  Since I do not know C++ i don't want to dive into FFMPEG and need to convert/Decode a 2D with H264. Is there any easier way to decode the video without FFMPEG or with a gui?
• 14:08
  How to fix "Cannot find a valid font for the family Sans' while adding text on image using react-native-ffmpeg - coffee Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to add text on image using the code below RNFFmpeg .execute(`-y -i $input -vf "drawtext=text='Hello World':fontcolor=white:fontsize=75:x=0:y=0" $output`); I am not using any custom font but still get this error. Error: [Parsed_drawtext_0 ⓐ 0x7f87a1ce40] Cannot find a valid font for the family Sans index.js:115 [AVFilterGraph ⓐ 0x7f6765e760] Error initializing filter 'drawtext' index.js:115 [AVFilterGraph ⓐ 0x7f6765e760] with args 'text=Hello World:fontcolor=white:fontsize=75:x=0:y=0' index.js:115 [AVFilterGraph (...)
• 14:25
  ffmpeg pipe livestream to ffplay - Dobbelina Newest 'ffmpeg' Questions - Stack Overflow
  I wonder if it is possible to pipe an internet livestream from ffmpeg to ffplay? Examples to illustrate: Livestream to test.mp4 works ffmpeg -i "https://Some livestream" -c copy "C:\\ffmpeg\\test.mp4" Recorded video to test.mp4 and pipe to ffplay works ffmpeg -i "https://Some recorded video" -c copy "C:\\ffmpeg\\test.mp4" -f matroska - | ffplay -fs - Livestream to test.mp4 and pipe to ffplay don't work ffmpeg -i "https://Some livestream" -c copy "C:\\ffmpeg\\test.mp4" -f matroska - | ffplay -fs - I (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 12:11
  Anomalie #4312: Oubli de report du commit : protection contre les bots qui floodent tmp/sessions - b b Revisions : SPIP
  Done avec https://git.spip.net/spip/spip/commit/31c61478 & https://git.spip.net/spip/spip/commit/718f03fe Autocitattion : "je connais quelqu'un qui râle tout le temps sur les report du 3.x vers trunk/master" :)
• 11:44
  Anomalie #4312: Oubli de report du commit : protection contre les bots qui floodent tmp/sessions - Maïeul Rouquette Revisions : SPIP
  Cela n'a pas non plus été reporté en 3.1 et en 3.2 :p
• 11:41
  Anomalie #4673: Un array déclaré avec [] Revisions : SPIP
  Une coquille similaire signalée sur forum : https://git.spip.net/spip/spip/src/branch/3.1/ecrire/inc/editer.php#L214
• 10:04
  Anomalie #4677: tri_protege_champ protège trop et peut casser des tris (notamment autre que SQL) - RastaPopoulos ♥ Revisions : SPIP
  Effectivement c'est pareil pour par s'il est dynamique, dsl Bien sûr qu'il faut y réfléchir à deux fois, je ne dis pas le contraire, c'est justement pourquoi je pose la question de "pourquoi cette restriction", le but est de bloquer quels cas non légitimes ? Et du coup par inverse quels cas on peut continuer de laisser passer sans danger ? Si on doit le faire avec parcimonie : est-ce que juste ajouter les crochets seulement est ok, et ne peut pas produire de trucs particulièrement problématiques ? Le truc pour reproduire je l'ai dit c'est : essayer de trier avec properties.gis[0].ville par ex (...)
• 09:41
  Anomalie #4677: tri_protege_champ protège trop et peut casser des tris (notamment autre que SQL) - cedric - Revisions : SPIP
  Comme d'hab : un rapport de bug avec un exemple qui permet de reproduire ça résout 90% du problème... Je pense que la différence c'est que tu as fait un par properties.gis[0].ville et là ça marche. Mais si tu fais un par #ENVtruc et que tu essaye de mettre &truc=properties.gis[0].ville dans ton URL tu verras que ça marche pas. Parce que dans ce cas le par est aussi protégé, même plus agressivement : https://git.spip.net/spip/spip/src/branch/master/ecrire/public/criteres.php#L769 qui appelle https://git.spip.net/spip/spip/src/branch/master/ecrire/public/criteres.php#L677 qui produit (...)
• 09:19
  Anomalie #4677 (Nouveau): tri_protege_champ protège trop et peut casser des tris (notamment autre... - RastaPopoulos ♥ Revisions : SPIP
  Les boucles SPIP ne bouclent pas que sur du SQL, depuis qu'on a ouvert, il y a moult autres utilisations. Et de nombreux critères fonctionnent parfaitement pour ces autres boucles aussi, comme les différentes manières de trier. Mais tri modifie le nom des champs, ce que ne fait pas par. Par exemple dans Sphinx, avec les données JSON, il est possible de trier sur des clés du JSON, comme ça : properties.gis[0].ville Cela marche parfaitement avec par sans rien casser. Mais tri vire tout ce qui n'est pas un espace et un mot, et donc ça aboutit dans la requête finale à : properties.gis0.ville Ça (...)

3 March

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 23:25
  avcodec/decode: constify the source packet parameter in extract_packet_props() - James Almer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/decode: constify the source packet parameter in extract_packet_props() Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/decode.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:25
  Efficient way to create variant playlists from mp4 for HLS - nnaj20 Newest 'ffmpeg' Questions - Stack Overflow
  I am totally new to video encoding and options, and just learned about Apple's HLS requirements. So far, I've been able to get something working for my iOS app. However, I find the entire process to be very slow and manual. Now, having to repeat this for several more locales (video translations), I can't imagine there isn't a better way. Controlling bitrate To have control over the bitrate, I use HandBrake to create a new .mp4 file with the appropriate video encoder setting, for each bitrate I want (192k, 400k, 1m, etc.). THEN, I move onto creating the (...)
• 20:39
  Convert *.hdr sequences to HDR10 videos ffmpeg - kmd999 Newest 'ffmpeg' Questions - Stack Overflow
  I have some *.hdr sequences, and I would like to convert them to HDR10 videos. I have tried using FFmpeg but FFMPEG errors that it can't find videos. ffmpeg -r 60 -i %d.hdr -pix_fmt yuv444p10le -c:v libx265 \\ -x265-params hdr-opt=1:repeat-headers=1:colorprim=bt2020:transfer=smpte2084:colormatrix=bt2020nc:max-cll=0,0 \\ -crf 25 -preset veryfast t.mp4 This is what I tried. I think this is generally the code to convert to HDR10 videos. I didn't put master-display there because I don't have information. I wonder if master-display is needed. I also (...)
• 18:44
  FFMPEG is really slow at extracting subtitles - Gustav P Svensson Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to extract the subtitles from a 1080P video, around 40min long. I'm currently using this command (using fluent-ffmpeg in node, but the translated command is this): ffmpeg -threads 3 -map 0: -c copy This command takes about 20-30 min to complete. I've searched quite a lot on how to speed up this process, if I look at my task manager I can see that ffmpeg is using 0.1% of the CPU which makes me think that it's possible to speed up this process. I'm not sure if the -threads option is actually doing anything when extracting subtitles but (...)
• 17:59
  How to extract audio from MPEG-4 file using ffmpeg [closed] - SteveS Newest 'ffmpeg' Questions - Stack Overflow
  How can we extract audio from video file (MPEG-4 format)? What is convenient form of storing the extracted audio data for further analysis? (edit: In other words: is it better to use PCM format or something like WAV if I want to get audio sound level?) From other questions about this topic I learned that ffmpeg is a right tool to do this.

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 22:05
  avcodec/utils: free last_pkt_props on avcodec_open2() failure - James Almer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/utils: free last_pkt_props on avcodec_open2() failure Regression since b34d1de8dc Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/utils.c
• 11:00
  avformat/mspdec: Check packet_size more completely - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avformat/mspdec: Check packet_size more completely Fixes: OOM Fixes: 28348/clusterfuzz-testcase-minimized-ffmpeg_dem_MSP_fuzzer-4612055872831488 Fixes: 28360/clusterfuzz-testcase-minimized-ffmpeg_dem_MSP_fuzzer-6245230626078720 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] (...)
• 10:49
  avformat/aiffdec: Check that SSND is at least 8 bytes - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avformat/aiffdec: Check that SSND is at least 8 bytes Fixes: Infinite loop Fixes: 30874/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-5933710488764416 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/aiffdec.c
• 10:49
  avformat/dcstr: Check sample rate - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avformat/dcstr: Check sample rate Fixes: signed integer overflow: -1300248894420254720 * 16 cannot be represented in type 'long' Fixes: 30879/clusterfuzz-testcase-minimized-ffmpeg_dem_DCSTR_fuzzer-5094464215449600 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/dcstr.c
• 12:47
  avcodec/float2half: fix minor style issue - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/float2half: fix minor style issue [DH] libavcodec/float2half.h
• 12:37
  avcodec/half2float: fix integer overflows in convertmantissa() - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/half2float: fix integer overflows in convertmantissa() [DH] libavcodec/half2float.h

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 13:38
  Evolution #2184: Passer la dist en HTML5 - cy_altern - Revisions : SPIP
  oui : on va éviter de compliquer... donc : https://git.spip.net/spip-contrib-squelettes/historique_dist_html4/commit/0a291186b8f41471caa634f67326ce7bc75cc409

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:32
  Losing pixels at end of the row with ffmpeg autogen - RCraveiro Newest 'ffmpeg' Questions - Stack Overflow
  I'm having an odd situation, i'm using ffmpeg autogen to decode videos and when i have a video that width % 32 different from 0 i'm loosing pixels at the end of every line. Example: video with 900x100 pixels, output is 900x100 but i lose some pixels at the end. Even with autogen tester i have this issue, video is a MPEG-4/avc1 Is this a know issue? This is whats i get with VLC This is whats i get with ffmpeg (...) -- This is whats i get with VLC, This is whats i get with ffmpeg autogen
• 11:39
  HTML5 live streaming with alpha channel - air5 Newest 'ffmpeg' Questions - Stack Overflow
  We are trying to live stream a video file with alpha channel. Adaptive streaming would be great, but it's not a must. Streaming is pretty new territory for us. We found out that WebM (VP9) seems to be the only format in the web that supports alpha channel. Our approach was using the nginx-rtmp-module as streaming server (MPEG-DASH) and broadcast with ffmpeg and stream as a, but the alpha channel was lost. Probably because RTMP required us to broadcast the video as FLV which doesn't support alpha. Is anyone having experience in streaming rgba videos on the web? Getting (...) -- this article
• 09:19
  which ffmpeg api is for the cmd option "-q:v 1" by saving jpg from video [duplicate] - Tangtoo Newest 'ffmpeg' Questions - Stack Overflow
  as the theme, how can I set quality scale with ffmpeg-api. I want to extract frame from video and save it as .jpg. Maybe I should set some av_dictionory? Thanks for reading and hope you can leave some answer.

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 11:48
  Evolution #2184: Passer la dist en HTML5 - b b Revisions : SPIP
  => mettre la constante _VERSION_HTML dans le fichier d'option de historique_dist_html4 +1, pas la peine de nécessiter un plugin pour un define.
• 11:46
  Evolution #2184: Passer la dist en HTML5 - cy_altern - Revisions : SPIP
  b b a écrit : une question/remarque : est-ce que le plugin historique_dist_html4 ne devrait pas activer define ('_VERSION_HTML', 'html4'); dans un fichier options ? à priori c'est le plugin historique_spip32_html4 qui est utilisé pour ça et effectivement ça semblerait une bonne idée que d'une manière ou d'une autre l'option soit activée lorsqu'on utilise historique_dist_html4... Deux possibilités au choix : mettre la constante _VERSION_HTML dans le fichier d'option de historique_dist_html4 mettre le plugin historique_spip32_html4 en necessite de historique_dist_html4 des avis sur la (...)
• 10:15
  Evolution #2184 (En cours): Passer la dist en HTML5 - b b Revisions : SPIP
  Super, merci cy_altern, juste une question/remarque : est-ce que le plugin historique_dist_html4 ne devrait pas activer define ('_VERSION_HTML', 'html4'); dans un fichier options ?

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:08
  Combining thousands of audios in NodeJs - Ishan Sharma Newest 'ffmpeg' Questions - Stack Overflow
  I am getting E2BIG error when combining more than 50 audios using SOX is one go. Is there a way to handle this? I wish to combine thousands of audios in one go. One solution is to make a recursive batch function using SOX but looking for a simple solution. Trying to implement this in NodeJs. Appreciate the help. Thanks.
• 08:00
  decode siren codec by using ffmpeg - Ms.Sahin Newest 'ffmpeg' Questions - Stack Overflow
  I have a siren(G722.1) pcap from wireshark website. I extracted the siren payload from the pcap but I could not decode the extracted payload to wav file by using ffmpeg. Here is how I used ffmpeg: ffmpeg -loglevel debug -y -acodec siren -i extracted_payload -b:a 24k -ar 16000 -acodec pcm16le -f wav siren.wav It gives error and says: unspecified sample rate. Also, I think there is no proper documentation of ffmpeg. I searched the problem all over the internet and found nothing. Thank (...)
• 02:54
  Transcoding with the GCP Transcoder API results in a time gap - banyan Newest 'ffmpeg' Questions - Stack Overflow
  I've been trying GCP's Transcoder API and having trouble with the time randomly becoming shorter than specified in certain cases. The specific cases are as follows: Specifying startTimeOffset and endTimeOffset (cut off 2 seconds before and after the video) fMP4 is used as container input video is mp4 with screen recording on iPad Pro For example, if I don't specify startTimeOffset and endTimeOffset, the time will not be shortened. Also, there is no problem when MPEG2-TS is specified for container. There may be a problem with the video itself, (...) -- Transcoder API, https://gofile.io/d/DUT9rr

2 March

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 19:52
  ivfenc: write duration for frame_cnt=1. - Ronald S. Bultje git.videolan.org Git - ffmpeg.git/rss log
  ivfenc: write duration for frame_cnt=1. [DH] libavformat/ivfenc.c
• 00:19
  avcodec/mobiclip: Avoid undefined integer overflow in MV computation - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/mobiclip: Avoid undefined integer overflow in MV computation Fixes: signed integer overflow: 1 + 2147483647 cannot be represented in type 'int' Fixes: 30877/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOBICLIP_fuzzer-4775601145774080 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/mobiclip.c

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 21:54
  Evolution #2184: Passer la dist en HTML5 - cy_altern - Revisions : SPIP
  Go ! la PR pour la modification du DOCTYPE : https://git.spip.net/spip/dist/pulls/7 les plugins de rétro-compatibilité : les squelettes avec le DOCTYPE HTML 4 : https://git.spip.net/spip-contrib-squelettes/historique_dist_html4 l'option de configuration "Se limiter au HTML4 sur le site public" : https://git.spip.net/spip-contrib-extensions/historique_spip32_html4

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:27
  ffmpeg won't exit normally with SIGINT - ntstlkr Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to record video with ffmpeg and all works fine when I call stopRecord() function inside timeout: frame= 147 fps= 18 q=-1.0 Lsize= 290kB time=00:00:09.91 bitrate= 239.8kbits/s speed=1.24x video:129kB audio:156kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.159774% [aac ⓐ 0x55e825dbdc40] Qavg: 241.892 Exiting normally, received signal 2. SIGINT Recording process exit, code: 255, signal: null Recording stopped But ffmpeg process won't exit and stays alive when I call stopRecord() function on API (...)
• 22:06
  Create muted video and black screen video with FFmpeg - user2685832 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use FFmpeg to generate the following from a local mp4 file: A copy of the original video with no audio A copy of the original video with audio but without visuals (a black screen instead). This file also needs to be in mp4 format. After reading through the documentation I am struggling to get the terminal commands right. To remove the audio I have tried this command without any success: ffmpeg -i file.mp4 -map 0:0 -map 0:2 -acodec copy -vcodec copy Could anyone guide me towards how to accomplish (...)
• 21:35
  Repeating images in a ffmpeg -i %04d.png pattern - Basj Newest 'ffmpeg' Questions - Stack Overflow
  I'm making a video of 20 seconds at FPS=25, with 500 frames which are 0000.png, 0001.png, ..., 0499.png. This works: ffmpeg -framerate 25 -i images/%04d.png out.mp4 but in fact there are only a few changes in the video, in my case at frames 0000, 0122, 0288, 0312, 0450. In the meantime the PNG are identical. Problem: it's always slow to generate 500 PNG files when only 5 different files would be enough! I would like to generate only those 5 PNG files, and generate the video from them. When I try the command above with images/ containing only 0000.png, (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 18:18
  Anomalie #2776: sélecteur de rubrique - chan kalan Revisions : SPIP
  Oui je confirme, ça marche bien en fait.

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:58
  FFMPEG python loop filtering H264 - Aron Latis Newest 'ffmpeg' Questions - Stack Overflow
  Is there any way in which one can opt out the loop filtering phase when decoding a H.264 encoded video? I have tried reading ffmpeg docs and looking for keywords such as loop or filtering, but nothing concludent came out of it so far.
• 17:53
  ffmpeg how to zoom out with no jiggle - Sulli Newest 'ffmpeg' Questions - Stack Overflow
  I have read that to avoid jiggling when zooming in on an image with ffmpeg a good solution is to upscale first and downscale at the end: ffmpeg -nostdin -r 25 -i input.jpg -filter_complex "scale=-2:10*ih,zoompan=z='min(zoom+0.0010,1.5)':d=125:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)',scale=-2:720" -c:v libx264 -t 5 -pix_fmt yuv420p output.mp4 but I can't find what would be the equivalent command for zooming (...)
• 17:18
  ffmpeg with partial motion detection - Silentfury Newest 'ffmpeg' Questions - Stack Overflow
  I have video files from a static surveillance camera and I try to re-encode them using some sort of motion detection filter (keeping the movements, droping the stills) in order to save space and play time. I have successfully tried the two below filter options but it still feels not good enough.: mpdecimate e.g. -vf "mpdecimate=hi=6480:lo=6420:frac=0.1,setpts=N/(15*TB)" select (e.g. -vf "select=gt(scene,0.4)") The main problem is a moving bush in the camera view, that I would like to exclude from the motion detection. Is there other/better ways of applying (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 17:08
  Anomalie #4198: Le W3C ne valide pas les atttribut width et height qui ne sont pas des entiers. Revisions : SPIP
  cf https://git.spip.net/spip/filtres_images/commit/6973ed410 en passant.
• 16:16
  Anomalie #4672 (Fermé): Mauvais affichage des versions à restaurer - b b Revisions : SPIP
  Alors fermons :)
• 16:07
  Anomalie #4676 (Nouveau): Regexp de detection des liens image trop laxiste - cedric - Revisions : SPIP
  cf https://git.spip.net/spip-galaxie/contrib.spip.net/issues/4#issuecomment-4968 une url logo-svg est confondue avec une image

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:59
  Hosting music bot on heroku - itsmaxplayz Newest 'ffmpeg' Questions - Stack Overflow
  I have made a discord bot on discord.py rewrite which plays music in a voice channel. The code is as follows: def search(query): with ytdl: try: requests.get(query) except: info = ytdl.extract_info(f"ytsearch:query", download=False)['entries'][0] else: info = ytdl.extract_info(query, download=False) return info, info['formats'][0]['url'] ydl_opts = 'format': 'bestaudio/best', 'quiet': True, 'postprocessors': [ 'key': (...)
• 15:13
  Change image to video with ffmpeg command - Shivangi rawat Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert png image into an mp4 (video) file and I am getting an empty video file as an output and it shows can't open this file message during conversion. Here is my code $command1="ffmpeg -f image2 -r 1/1 -i ../input/sample_2094278659.png -vf fps=25 ../output/test2.mp4"; //command for every 1 second image change in video exec($command1); I have tried these examples also $command1="ffmpeg -loop 1 -t 5 -i ../input/imagesample.png -t 5 -i ../input/sample_2094278659.png -vf fps=25 format=yuv420p ../output/test1.mp4"; // (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 15:03
  avcodec/svq1dec: use av_fast_padded_malloc() for allocation pmv only when necessary - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/svq1dec: use av_fast_padded_malloc() for allocation pmv only when necessary [DH] libavcodec/svq1dec.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:49
  How to set output file while using subprocess.Popen and hide cmd window at the same time? - Nande Newest 'ffmpeg' Questions - Stack Overflow
  I made a simple app that can convert video files using FFMpeg. I used Kivy for UI. I used os.system() to execute ffmpeg commands but while using this method, there is always a cmd window popping up. Therefore i am trying to use subprocess.Popen() to execute ffmpeg commands but i also want to save ffmpeg output to a text file. I tried this but it didn't work: subprocess.Popen(f"ffmpeg -i path -acodec acodec output > output.txt 2>&1", creationflags = 0x08000000, stdout="output.txt") FFMpeg converts the video but there is no output.txt file. This code works with (...)
• 13:35
  Split audio files using silence detection - beero Newest 'ffmpeg' Questions - Stack Overflow
  I've more than 200 MP3 files and I need to split each one of them by using silence detection. I tried Audacity and WavePad but they do not have batch processes and it's very slow to make them one by one. The scenario is as follows: split track whereas silence 2 seconds or more then add 0.5 s at the start and the end of these tracks and save them as .mp3 BitRate 192 stereo normalize volume to be sure that all files are the same volume and quality I tried FFmpeg but no (...)
• 07:24
  How to convert videos to mp4 without stretching portrait to landscape using moviepy? [closed] - suyogx Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use Moviepy to convert videos to .mp4 format. Landscape videos have no issues. But when I input portrait ones, they get stretched to landscape. example: when i upload 1080x1920 videos, they get stretched to 1920x1080. Is there any way to disable stretching? I am only trying to convert the videos to .mp4.
• 14:17
  PHP ffmpeg Image to Video - Metin Saraç Newest 'ffmpeg' Questions - Stack Overflow
  I want to create a Video with Image in php ffmpeg. My code is as follows, $video = $ffmpeg->open('image1.jpg'); $video->filters() ->resize(new FFMpeg\\Coordinate\\Dimension(1080, 1080))->synchronize(); $format = new FFMpeg\\Format\\Video\\X264(); $format->setKiloBitrate(1000)->setAudioChannels(2)->setAudioKiloBitrate(256); $video->save($format, 'video.avi'); I want total video duration and background sound to my code, but I couldn't find a suitable solution. Can you help me?  (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 11:34
  avformat/dashdec: Increase size of id buffer - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/dashdec: Increase size of id buffer The current size is not enough, see e.g. http://ftp.itec.aau.at/datasets/DASHDataset2014/TearsOfSteel/1sec/TearsOfSteel_1s_simple_2014_05_09.mpd Reviewed-by: Steven Liu <lqⓐchinaffmpeg.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/dashdec.c
• 11:20
  avformat/dashdec: Ensure strings are zero-terminated - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/dashdec: Ensure strings are zero-terminated strncpy only ensures that one does not write beyond the end of the destination buffer; in case of truncation it does not zero-terminate the destination buffer. This makes using it the way it is now in the DASH demuxer dangerous. So use av_strlcpy instead. Also don't write anything if there is no id: The buffer has already been zeroed initially. The DASH testset from the Universität Klagenfurt contains samples with ids that are too long. E.g. (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:13
  Extract bitstream from a lossless WebP file? - malat Newest 'ffmpeg' Questions - Stack Overflow
  I am interested in removing the RIFF header from a lossless WebP image. I was hoping to use ffmpeg to create the bitstream directly: % ffmpeg -i input.png -f image2 -vcodec vp8 -q:v 0 lossless.vp8 But quickly looking at the documentation, it seems the lossless mode is totally different from VP8: Lossless images are a separate codec developed by Google. ref: http://ffmpeg.org/ffmpeg-codecs.html#libwebp Are there any command line tool to remove RIFF header from an existing webp file (Debian/Linux) ? If not, can I use ffmpeg to create the (...) -- http://ffmpeg.org/ffmpeg-codecs.html#libwebp
• 11:10
  Ffmpeg libav with multiple inputs crashes when cleaning memory - Expressingx Newest 'ffmpeg' Questions - Stack Overflow
  I'm streaming multiple cameras with ffmpeg libav for (int i = 0; i Every camera is streamed to own file, having its own output AVFormatContext. Everything is working fine till the recording is ended and the memory has to be freed. And the problem is here if (InputFormatContext != null) fixed (AVFormatContext** p = &InputFormatContext) ffmpeg.avformat_close_input(p); InputFormatContext = null; If I use only 1 camera everything is fine, but if they are two the application crashes. And I don't know (...)
• 08:10
  IS SNR SCALABILITY IS POSSIBLE IN H264 , H265 OR AV1? [closed] - mavya tweenhonee Newest 'ffmpeg' Questions - Stack Overflow
  Is SNR Scalability is possible in h264, h265 or av1 ? Is there any binaries or source codes available for SNR Scalability ?

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 11:42
  Anomalie #2776: sélecteur de rubrique - cedric - Revisions : SPIP
  J'avais complété le commit avec https://git.spip.net/spip/spip/commit/70e3624c61a44afa34b77ec9459710b3b3ab5b69 car il manquait en effet une partie, mais là je viens de retester en 3.3 à jour de la branche master et tout marche bien : je prends un auteur admin je fais modifier j'ajoute 2 rubriques j'enregistre Et j'ai bien les 2 rubriques qui apparaissent sur sa page auteur, et les liens sont là aussi dans la table spip_auteurs_liens.
• 11:38
  Evolution #4675: Lien d'url qui renvoi vers le privé - nicod _ Revisions : SPIP
  +1, ce lien est totalement contre intuitif, je me fais avoir régulièrement en faisant un clic molette dessus, pensant ouvrir la page publique dans un nouvel onglet. Ta proposition semble pas mal, afficher tout le temps "Modifier" et ne faire le lien (ou plutôt mettre un button, puisque ce n'est pas vraiment un lien) sur "Modifier" uniquement, pour pouvoir copier/coller l'url. On pourrait aussi mettre le "vrai" lien public sur l'url mais alors ça modifierait l'ergonomie historique, et on a le lien "Voir en ligne" en (...)
• 11:32
  Anomalie #2776: sélecteur de rubrique - chan kalan Revisions : SPIP
  Il me semble que c'est depuis que le formulaire ne fonctionne plus : la table de lien n'est pas remplie pour lier auteur et rubrique. SPIP 3.3-dev à jour

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:13
  HOW CAN I USE NGINX TO GENERATE ONLY .TS FORMAT? - VALANTINA Newest 'ffmpeg' Questions - Stack Overflow
  I'm using nginx for generating copies of stream chunks with ".ts" format that are encapsulated in m3u format. The issue here, is that I don't want to work with m3u format, I want to send directly and contouniesly the ts chunks to the media player(because m3u format it's not readable in so many media player) ! So, I want to know the configuration or the algorithme to work with in Nginx? Please, And thank you!
• 03:55
  FFmpeg - Slow Down Video by Half - Play Back at 2x - nomaam Newest 'ffmpeg' Questions - Stack Overflow
  I am working with the newest version of FFmpeg I am trying to slow down a video with audio by half speed, then play back that video in something like VLC at 2x speed and have the video appear and sound as if it was the original version. So far I have tried ./ffmpeg.exe -i "ffmpeg/testVideo.mp4" -filter_complex "[0:v]setpts=1.5*PTS[v];[0:a]atempo=0.5[a]" -map "[v]" -map "[a]" "ffmpeg/outputVideo.mp4" When I play back the video at 2x it isn't close to playing and sounding like the unaltered version. I have read the documentation but am having difficulty (...)
• 03:18
  FFmpeg: why avcodec_receive_frame need additional packet to get an I frame - everywill Newest 'ffmpeg' Questions - Stack Overflow
  I'm new to FFmpeg. When learn it with the nice repo(https://github.com/leandromoreira/ffmpeg-libav-tutorial)，in the hello_world example I find avcodec_receive_frame dosen't return the first I frame until it gets the third packet, as following screenshot shows: I'm wondering why additional packets are needed to receive an I frame. -- https://github.com/leandromoreira/ffmpeg-libav-tutorial,
• 03:02
  FFMPEG and MP3: equalizer filter has no effect at all - LeMartin Newest 'ffmpeg' Questions - Stack Overflow
  Practicing FFMPEG filters on MP3s was great until I got stuck here with no luck reading from FFMPEG docs or around the web: equalizer filter has no effect at all on my MP3. First I probed the file: libavutil 56. 49.100 / 56. 49.100 libavcodec 58. 89.100 / 58. 89.100 libavformat 58. 43.100 / 58. 43.100 libavdevice 58. 9.103 / 58. 9.103 libavfilter 7. 83.100 / 7. 83.100 libswscale 5. 6.101 / 5. 6.101 libswresample 3. 6.100 / 3. 6.100 libpostproc 55. 6.100 / 55. 6.100 Input #0, mp3, from '.\\cierre.mp3': Metadata:  (...)
• 00:34
  FFmpeg hangs on buffer fill c++ - Derek Halden Newest 'ffmpeg' Questions - Stack Overflow
  I'm processing a bunch of frames from an RTSP stream using ffmpeg. I end up doing a lot of processing on these frames, which means that I'm not always pulling in real-time. If the buffer gets full, the process hangs. I'm wondering if one of the following solutions is feasible/fixes the problem, and if so, how I would implement it using the ffmpeg libraries: 1) Is there a way to clear the buffer if I ever reach a point where it's hanging? (I can determine when it's hung, I just don't know what to do about it). 2) Is there a way to make the (...)
• 00:34
  Recursively scan and identify video files with FFMPEG - Jason Paul Michaels Newest 'ffmpeg' Questions - Stack Overflow
  UPDATE Thank you everyone for sharing up your suggestions. I was able to make the work properly by modifying it as follows. #!/bin/bash ROOTPATH="/Volumes/NVME-RAID/ASSET-Processing/CORRUPT-SCAN/SCAN " # manually define root path to your folder that has subfolders for subdir in *; do cd $ROOTPATH$subdir mkdir 00errors for path in *.MOV,mov,MP4,mp4; do ffmpeg -i "$path" -f null -; echo$? RC=$? if [ "$RC" -ne "0" ]; then # Do something to handle the error. mv $path ./00errors fi done cd (...)

1 March

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 18:10
  avcodec/decode: port last_pkt_props to AVFifoBuffer - James Almer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/decode: port last_pkt_props to AVFifoBuffer Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/decode.c [DH] libavcodec/internal.h [DH] libavcodec/utils.c
• 17:22
  avformat/frmdec: Simplify finding pixel format - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/frmdec: Simplify finding pixel format The fourccs used by the Megalux Frame format to determine the pixel format are actually no fourccs at all as they are a single byte. Furthermore, their range is continuous (1-5), so they are actually ordinary indices. So treat them as such and don't use PixelFormatTags for them. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] (...)
• 23:24
  avcodec/alsdec: Check bitstream input in read_block() - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/alsdec: Check bitstream input in read_block() Fixes: Timeout Fixes: 28110/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5036338973507584 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/alsdec.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:14
  Get the list of I-Frames in a video using Python - Tina J Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get the list of indexes for all I-frames in a video in Python (and later save a portion of them as JPEG). Right now, I can traverse all frames using FFProbe in terminal, and see which one is I-frame: ffprobe -select_streams v -show_frames -show_entries frame=pict_type -of csv 18s.mp4 which gives me something like this: frame,I frame,B frame,P frame,B frame,P frame,B But how can I do that in Python (I'm in Windows) and get a list of all their (...)
• 20:09
  Windows CMD Batch Script FFmpeg - Tobias Newest 'ffmpeg' Questions - Stack Overflow
  I have created a batch file (.bat) that uses FFmpeg to transcode various videos (with *.mov or *.mp4 file name extension) from an input folder to an output folder (with extension *.mkv) as batch process (Windows 10 environment). File names (without extension) from the input folder should be copied to the newly created output file names (that have the new file extension *.mkv). ⓐecho off set CMD=ffmpeg -c:v ffv1 -level 3 -g 1 -coder 1 -context 1 -pix_fmt + -slices 24 -slicecrc 1 -report -c:a pcm_s24le FOR /R input_folder %%G IN (*.mov,*.mp4) DO ( echo (...)
• 19:23
  x86 32 bit support for Accord.video.FFMPEG - Ravi Kanth Newest 'ffmpeg' Questions - Stack Overflow
  Accord version 3.8.2 I am using Accord, Accord.video, Accord.video.FFMPEG Dll's for capturing the screen, my code is compiled to ANYCPU, everything works fine in 64 bit machine, but I am facing issue when it comes to 32 bit machine below is exception which I am getting. Exception occurred while loading the assemblies Could not load file or assembly 'Accord.Video.FFMPEG.dll' or one of its dependencies. is not a valid Win32 application. (Exception from HRESULT: 0x800700C1), at System.Reflection.RuntimeAssembly.nLoadFile(String path, Evidence evidence) at (...)
• 18:46
  dynamically update image in video stream using ffmpeg - omega1 Newest 'ffmpeg' Questions - Stack Overflow
  I have the following ffmpeg command which works, but I would like image3.jpg to update every 30 seconds (image3.jpg changes every 30 seconds). I read that I needed to move the file from a .tmp file image3.jpg.tmp to image3.jpg but this is not working either. The script places a few images on screen and takes an audio stream as its input and then outputs to a RMTP server, all works except image3.jpg only updates if I stop the ffmpeg command and restart it (which I cannot do as it is a live stream). I'm also struggling with where to add a drawtext within the filter_complex (...)
• 12:36
  FFmpeg errors using pipe input instead of file input [duplicate] - Michael Werner Newest 'ffmpeg' Questions - Stack Overflow
  I try to do several conversions (e.g. codec conversion of videos, extracting single frames etc.) via FFmpeg on 64-bit Windows OS. This works fine if I use files as input for FFmpeg.exe This works: ffmpeg.exe -hide_banner -loglevel debug -i "C:\\blabla\\OA9.mp4" -deinterlace -vframes 1 -c:v bmp -f image2pipe pipe: > test1.bmp This does not work: type "C:\\blabla\\OA9.mp4" | ffmpeg.exe -hide_banner -loglevel debug -i pipe: -deinterlace -vframes 1 -c:v bmp -f image2pipe pipe: > test1.bmp It causes the following errors / warnings:  (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 18:37
  avformat/sga: improve probing for valid files - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avformat/sga: improve probing for valid files Update variables depending on high four bits of first two bytes. [DH] libavformat/sga.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:59
  fluent-ffmpeg: Convert wav to alac .m4a with streams - Johannes Klauß Newest 'ffmpeg' Questions - Stack Overflow
  On my node.js server I want to convert a wav file to apple lossless .m4a Using fluent-ffmpeg, I got this so far: const transcoder = ffmpeg(fs.createReadStream(`$__dirname/convertTest.wav`)); transcoder .withAudioCodec('alac') .addOutput(fs.createWriteStream(`$__dirname/test2.m4a`)) .run() ; But it throws me the following error: Error: ffmpeg exited with code 1: Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument Error initializing output stream 0:0 -- Conversion failed! I (...)
• 18:04
  debian ffmpeg webcam streaming to remote server error - James Newest 'ffmpeg' Questions - Stack Overflow
  I have a beaglebone black that I am trying to stream live video from, to an OSX computer. The streaming client potion seems to work if I point it to a local ffserver. rootⓐbeaglebone:~# ffmpeg -f v4l2 -s 320x240 -r 30 -i /dev/video0 http://127.0.0.1:8090/feed1.ffm ffmpeg version N-78848-gf114839 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.9.2 (Debian 4.9.2-10) configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags='-O3 -I/root/ffmpeg_build/include -mfpu=neon -mtune=cortex-a8' (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/avcodec.h

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 16:20
  Evolution #4675 (Nouveau): Lien d'url qui renvoi vers le privé - Maïeul Rouquette Revisions : SPIP
  Je rapporte ici car potentiellement un bug ergonomique. En tout cas 2 salarié·es de l'association ont été perturbé Si je vais sur une fiche d'un objet et que j'ai activé la gestion avancé des urls J'ai tout en haut l'url de l'objet. Dans la plupart des sites, lorsque qu'un texte est url et qu'on a un lien dessus, on s'attend à ce que le liens pointe vers l'url en question. Or dans notre cas, cela pointe... vers le privé (pour pouvoir justement modifier l'url). Mais du coup mes 2 compères ont fait ceci : clique-droit sur le lien, puis "copier l'url" et envoyer cela à des gens en pensant ainsi (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:01
  Produce an adaptive multi-resolution mpeg-dash file from an input video file - Tariq Hasan Newest 'ffmpeg' Questions - Stack Overflow
  I can produce different resolution mpeg-dash videos from running these commands separately and get one .mpd file for each of the resolutions: ffmpeg -i /path/to/input.mp4 -vf scale=1920:1080 /path/to/output.mpd ffmpeg -i /path/to/input.mp4 -vf scale=1280:720 /path/to/output.mpd ffmpeg -i /path/to/input.mp4 -vf scale=720:480 /path/to/output.mpd ffmpeg -i /path/to/input.mp4 -vf scale=640:360 /path/to/output.mpd The question is, how do I get a single .mpd file that maps to all these different resolution videos which would be adaptive in resolution when streamed over (...)
• 14:44
  Supporting HEVC/H.265 videos in Electron - Elmo Newest 'ffmpeg' Questions - Stack Overflow
  Chrome/Electron don't normally support H.265 videos. I want the user to be able to play .mov files recorded by Apple devices in my app. How can I do this? Possible approaches: Use ffmpeg to transcode to H.264 in real-time, which will be resource intensive (not ideal) Use WebAssembly to render the video in a tag (not ideal) Fork and manually add H.265 codec support to Chrome/Electron (overkill) Use a native module that renders the video in a or (...)
• 14:00
  Generate Thumbnail of Uploaded video in Laravel - Bhargav Chudasama Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a thumbnail of the uploaded image in Laravel. but there is no particular doc for this. It's possible without the FFmpeg. I didn't want to use FFmpeg. please anyone can help on this.
• 12:17
  How to properly splice a video-blob in javascript - marks Newest 'ffmpeg' Questions - Stack Overflow
  I am recording a webcam-video through recordRTC which has an ondataavailable callback which is called every 2000 milliseconds. The ondataavailable method provides a Blob as parameter, so it will always contain the current video blob. I would like to upload the video in slices to the server while the recording is ongoing to avoid having a big file to upload in the end as one. For that, the blobs are sliced with Blob.slice(): ondataavailable(blob) // Create a new blob from last blob size to the end of the blob const sliceBlob = blob.slice(this._state.lastBlobSize, (...) -- recordRTC, Blob.slice(), FFMpeg,

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 06:10
  Remove double ';' - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  Remove double ';' Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavcodec/cinepakenc.c [DH] libavcodec/exr.c [DH] libavcodec/imc.c [DH] libavcodec/mobiclip.c [DH] libavdevice/lavfi.c [DH] libavfilter/af_aiir.c [DH] libavfilter/vsrc_gradients.c [DH] libavformat/movenc.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 07:49
  Increase frame rate and decrease duration of video using FFMPEG - SBiswas Newest 'ffmpeg' Questions - Stack Overflow
  Please help me out. I have a video of 0.04 frame rate and 02:46:40 duration, and I want to increase frame rate to 25fps and decrease duration to 10s-13s. I have used these commands for fps and speed respectively: ffmpeg -i input.avi -r 25 output.avi ffmpeg -i output.avi -vf "setpts=0.001*PTS" output1.avi But the final result output1.avi has distortion in it. How can I achieve my required fps and duration without any loss in my video (...)
• 06:48
  FFMPEG NVENC encoding with Windows10 - Daniel Bartley Newest 'ffmpeg' Questions - Stack Overflow
  I had to reinstall windows 10 because windows. I have this exact same code working prior to the reinstall, however after I cant get it to work. I am using the latest nvidia drivers 416.16 I have VisualStudio and Cuda Toolkit installed 2x 1080TIs Using ffmpeg 4.0.2: T:\\ffmpeg\\bin\\4.0.2\\ffmpeg.exe -c:v h264_cuvid -i "T:\\Streams\\01-ready\\2018-10-10 21-19-21.mp4" -i "T:\\Streams\\10-source\\kpg-logo.png" -filter_complex "overlay=10:10" -b:v 24000k -c:v h264_nvenc -c:a copy "T:\\Streams\\02-encoded\\2018-10-10 21-19-21_watermarked.mp4"  (...)

28 February

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 12:44
  avcodec/exr: add lut oriented half to float conversion code - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/exr: add lut oriented half to float conversion code [DH] libavcodec/exr.c [DH] libavcodec/half2float.h
• 11:57
  avcodec/exrenc: move float2half code to own header - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/exrenc: move float2half code to own header [DH] libavcodec/exrenc.c [DH] libavcodec/float2half.h
• 02:44
  avcodec/roqvideoenc: Avoid allocating buffers separately - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec/roqvideoenc: Avoid allocating buffers separately This is possible because their size is known at compile-time; so they can be put directly into the context and don't need to be allocated for every frame. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavcodec/roqvideoenc.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:54
  FFmpeg - Create Thumbnail Grid from Videos [duplicate] - John Doe Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to create a grid of 9 videos to form one big video, then snapshot the first frame to create a thumbnail showing the first frames of all 9 videos? I wish to take the first 9 videos from a contact.txt file I started by trying with 4 videos but it still doesnt work: ffmpeg -y -ss 00:00:01 -protocol_whitelist file,pipe -f concat -safe 0 -i "concat.txt" -filter_complex "[0:v][1:v]hstack=inputs=2[top];[2:v][3:v]hstack=inputs=2[bottom];[top][bottom]vstack=inputs=2[v]" -map "[v]" -s 1280x720 "thumb.jpg" Trying to get this layout: MUST use files from (...) --
• 23:24
  problem with executing flutterFFmpeg command - Sadiq Samaila Newest 'ffmpeg' Questions - Stack Overflow
  the code below is for creating a robot voice with flutterFFmpeg so here is the code I ran String commandToExecute = "-i $aud -filter_complex 'afftfilt=real='hypot(re,im)*sin(0)':imag='hypot(re,im)*cos(0)':win_size=512:overlap=0.75' " + outputPath; _flutterFFmpeg.execute(commandToExecute).then((rc) => print( "FFmpeg process exited with rc $rc $appDocumentDir")); and I got this error E/mobile-ffmpeg( 5493): [AVFilterGraph ⓐ 0x7ce619159800] No such filter: 'im)*sin(0):imag' E/mobile-ffmpeg( (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 23:14
  avcodec/exr: add fast path for case when powf() isn't needed - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/exr: add fast path for case when powf() isn't needed [DH] libavcodec/exr.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:42
  What's the single ffmpeg command for converting a video file to mpeg-dash format with adaptive bitrate? - Tariq Hasan Newest 'ffmpeg' Questions - Stack Overflow
  Resultant resolutions should be of 240p, 480p, 720p and 1080p. The resultant .mpd file must be a single file.
• 19:36
  FFMPEG: crop a video without losing the quality - mrana Newest 'ffmpeg' Questions - Stack Overflow
  I have mp4 video of 1920x1080. I would like to crop the video to 480x270 without quality loss. I am using the following command: ffmpeg -i input.mp4 -filter:v "crop=480:270:200:200" -crf 23 output.mp4 I also tried: ffmpeg -i input.mp4 -filter:v "crop=480:270:200:100" -c:a copy -qp 0 output.mp4 I used -crf 23 and -qp 0 for loseless video cropping, but after cropping video has lost quality. Does anyone know how I can crop the video without losing the (...)
• 19:28
  How can I tell if a video file is corrupted? FFmpeg? - A Person Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to find out if a video file is corrupted or not. I am using FFmpeg to transcode a video file. However, when it gets to a file that not playable and is damaged, it stops running. I want to know if there is a way to output the FFmpeg command into a text file and then be able to tell which file is corrupted from the text file. When I run FFmpeg on one of the corrupted vide, I find this information. built with gcc 9.1.1 (GCC) 20190807 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls (...)
• 18:51
  ffmpeg stream loop video forward and in reverse - Andrew Mascillaro Newest 'ffmpeg' Questions - Stack Overflow
  I want to take an input video and horizontally concatenate it with itself in reverse (play it forwards then backwards) using a filter_complex. So far I have split it over 3 commands, reversing, concatenating, and streaming, but I want to do it in one command. The following streams a video twice but I don't know how to reverse the second video. How does one reverse the second copy of the video without changing the first one? ffmpeg -re -stream_loop -1 -i self_recording.mkv -filter_complex \\ "[0:v]split=2[r1][r2];[0:v][r1][0:v][r2] concat=n=4:v=1[v]" \\ -map "[v]" -f v4l2 (...)
• 20:06
  Python code to convert ffmpeg time duration value to seconds - dgasaway Newest 'ffmpeg' Questions - Stack Overflow
  I am seeking python 3.x code that can take a user-provided value in ffmpeg's time duration format and provide a float for the number of seconds represented by that duration. It would parse both formats described in the documentation and handle the s/ms/us prefix for the second format. The only thing I would not need is the optional negative. I mostly need this so I can provide the correct 'start_time' (seconds) for the fade and afade filters. Please note, I am not asking how to get the duration of an input file. These are string values provided by the (...) -- time duration format
• 17:08
  Streaming UVC capture device with FFMPEG - raymater Newest 'ffmpeg' Questions - Stack Overflow
  I would like to stream the audio and video signal from my HDMI UVC Capture device (AVerMedia ExtremeCap UVC) connected to my RPi 4 (its IP is : 192.168.1.15). So I'm using ffmpeg, my command works but in my other PC, VLC can't play the stream. I see the progress bar searching but nothing, it goes around in circles. My FFMPEG command (works) : ffmpeg -f v4l2 -i /dev/video0 -f alsa -i hw:1 -c:v h264_omx -profile:v baseline -b:v 16000k -flags:v +global_header -bsf:v dump_extra -acodec aac -b:a 384k -ac 2 -ar 44100 -f rawvideo udp://192.168.1.15:8888 In VLC (...)
• 16:42
  What's the principle of atadenoise algorithm and which function in ffmpeg source code implement the atadenoise algorithm? - hiter1996 Newest 'ffmpeg' Questions - Stack Overflow
  I cannot figure out which function in libavfilter/vf_atadenoise.c implements atadenoise in ffmpeg...
• 14:30
  Can I provide the decryption key for the FFMPEG encrypted m3u8 file externally? - Dilshan Newest 'ffmpeg' Questions - Stack Overflow
  First of all I have zero knowledge with ffmpeg and trying to understand it by using this tutorial. Once I read it I got some knowledge with ffmpeg. So now what I need to do is encrypt a mp4 file and host it somewhere ( maybe on Vimeo ) on the internet and play that encrypted file on a player on Android / windows or web player ( In a client application ) After about 3 days of research I found out that I can encrypt a video with below line of code. ffmpeg -i input.mp4 -c copy -bsf:v h264_mp4toannexb -hls_time 10 -hls_key_info_file key_info playlist.m3u8 This will (...) -- tutorial, https://www.cumulations.com/blogs/29/OfflineVideoStreaming
• 13:31
  Custom FFMpeg Build with QSV, CUDA and VAAPI that can also run on other servers and directories - Adem Aga Newest 'ffmpeg' Questions - Stack Overflow
  Since I am starting with my first build experience with FFMpeg. I want build a custom version of FFMpeg with IntelHD GPU (QSV) and Nvidia GPU (NVENC) and VAAPI support, which should also run later on other Linux (Ubuntu 18.04 and 20.04) computers with corresponding GPUs (IntelHD + GPU). So I would like to ask the following questions: Do the corresponding graphics cards (IntelHD and Nvidia) have to be available on the server where i want compile FFMpeg and do their drivers have to be installed? Or is it not necessary ? If the graphics card drivers have to be (...)
• 13:16
  Remove terminal opened by ffmpeg-python - Omid Ki Newest 'ffmpeg' Questions - Stack Overflow
  I have this program that combines audio and video together and for that I use ffmpeg and ffmpeg-python. The program works really well but when I try to make an exe version, naturally, it pops up a terminal and shows the ffmpeg functioning. I saved the file as .pyw instead of .py so that no window will pop up but it still happens. I also saw another post on how to make the terminal disappear in subprocess but I am using ffmpeg-python and cannot control how subprocess is used unless I modify the source which I do not intend to. Is there anyway to make the terminal window disappear without (...)
• 12:50
  Generating timestamps in webm transport stream with ffmpeg - Vlad Feinstein Newest 'ffmpeg' Questions - Stack Overflow
  I am recording screen capture of my Electron app to a file, as suggested here: Save captured video to file in Electron It works great, but the file is a “transport stream”. I can play it in Chrome browser, but can’t adjust the time slider. The suggestion was to use ffmpeg to post-process the file. The simplest, straight-forward command I found is: ffmpeg -fflags +genpts -i in.webm out.webm I thought that this simply generates timestamps. However, the out.webm file is 15 times smaller than in.webm! I don’t see any change in the quality. The downside is - the (...)
• 12:37
  FFMPEG script to merge all files in a list and make a 1920x1080p 60fps mp4 video - BitBit Newest 'ffmpeg' Questions - Stack Overflow
  I have a list of 46 videos in a text file. I tried the concat method to merge all of them, which worked but the quality is very poor and the audio is bugged/missing at parts. Can someone please help me with a script to merge all 46 videos and the output to be 1920x1080 60fps mp4 video?
• 10:23
  How run 2 script python in same time? - FoxFr Newest 'ffmpeg' Questions - Stack Overflow
  I explain my need : i wish to run ffmpeg with a python script (that's ok) but i need to know of the script is launched with a blink led connected on the GPIO of my RPI, But i dont know why i can launch my script and start le blink (or just a led on) Can u help me ? show me the light, please ;) import RPi.GPIO as GPIO import time import os GPIO.setwarnings(False) GPIO.setmode(GPIO.BCM) GPIO.setup(4, GPIO.OUT) GPIO.setup(22,GPIO.IN) # fonction qui fait clignoter la led def blink(led): GPIO.output(led,True)  (...)
• 10:10
  problem with creating a robot voice with flutterFFmpeg - Sadiq Samaila Newest 'ffmpeg' Questions - Stack Overflow
  so here is the code I ran String commandToExecute = "-i $aud -filter_complex 'afftfilt=real='hypot(re,im)*sin(0)':imag='hypot(re,im)*cos(0)':win_size=512:overlap=0.75' " + outputPath; _flutterFFmpeg.execute(commandToExecute).then((rc) => print( "FFmpeg process exited with rc $rc $appDocumentDir")); and I got this error E/mobile-ffmpeg( 5493): [AVFilterGraph ⓐ 0x7ce619159800] No such filter: 'im)*sin(0):imag' E/mobile-ffmpeg( 5493): Error initializing complex filters. E/mobile-ffmpeg( 5493): (...)
• 06:31
  High time delay: using ffmpeg to open camera and ffplay to play - hgwd Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a project which using ffmpeg to open camera and ffplay to play, but ffplay always have a high time delay which really confused me. These are my commands: ffmpeg -f avfoundation -s 1280x720 -r 30 -i 0 -pix_fmt yuv420p -f h264 -vf scale=640:360 udp://127.0.0.1:4000 ffplay udp://127.0.0.1:4000 My environment: OS: macOS Catalina 10.15.7 CPU: 2.3GHz two Intel Core i5 Memory: 8GB Is anyone can help me? (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 02:03
  avcodec/exr: handle case when |im - IM| == 1 for huff compression - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/exr: handle case when |im - IM| == 1 for huff compression [DH] libavcodec/exr.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 00:59
  raspberrypi with Canon over network - Troy Robinson Newest 'ffmpeg' Questions - Stack Overflow
  Been trying to solve this for a few days. This is one of my first questions so please try not to chew my head off. It's got alot of bone in it anyways. I've got a Pi3 connected via USB to a Canon M100, works perfectly using gphoto. What I'm trying to do is get some live view - previewing going on over my network. Code I run on the Pi gphoto2 --stdout --capture-movie | ffmpeg -i - -vcodec mjpeg -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video0 | cvlc v4l2:///dev/video --sout '#transcodevcodec=mjpeg,vb=800,acodec=none:rtpsdp=rtsp://:8554/' Everything up (...)

27 February

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 17:56
  avcodec/roqvideoenc: Avoid intermediate buffer - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec/roqvideoenc: Avoid intermediate buffer Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavcodec/roqvideoenc.c
• 16:10
  avcodec/roqvideoenc: Reuse buffers instead of alloc+free for each frame - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec/roqvideoenc: Reuse buffers instead of alloc+free for each frame In case of the cel evaluators it even allows to perform the initialization of the source coordinates only once instead of for each frame. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavcodec/roqvideoenc.c
• 15:42
  avcodec/roqvideo: Use dedicated context for encoder - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec/roqvideo: Use dedicated context for encoder Up until now, the RoQ video decoder and encoder used the same context; and said context contained several fields that are only used by the encoder. This commit changes this and uses a dedicated context for the encoder; it contains the common context as first element in order to use functions common to the de- and encoder. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavcodec/roqvideo.h [DH] (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:14
  How to get best audio quality on music bot using discord.py? - user28606 Newest 'ffmpeg' Questions - Stack Overflow
  I've built a discord music bot in discord.py but for some reason, it doesn't play music in as high quality as Fredboat or Rythm(so I don't think voice chat's bitrate is the problem). I've tried a couple of things online. The only thing that improved quality a little bit was downloading the song before playing it. But the quality was still far from anything like Fredboat's. It's also very impractical since downloading a 1h song takes a while and is space consuming. I'm interested in how to fix this and the explanation for why this is (...)
• 20:17
  How to have all the images in a folder stacked on top of each other in ffmpeg? - Antsy Newest 'ffmpeg' Questions - Stack Overflow
  I have a folder that contains nothing but images named 1.jpg - 484.jpg. Is there a simple way to have all the images stacked on top each other in one long image in ffmpeg? (preferably with one command) I've searched for this thing a bunch of times but I haven't found the answer I was looking for. Thanks in advance!

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 20:05
  Anomalie #4674 (Fermé): SPIP 3.1.5 : déclaration de tableau trop moderne - b b Revisions : SPIP
  Corrigé https://git.spip.net/spip/mediabox/commit/6cb7d10feeedcea2c4c11aa90ab07d8f8a2035d8
• 19:47
  Anomalie #4674: SPIP 3.1.5 : déclaration de tableau trop moderne Revisions : SPIP
  Ben je préfèrerais éviter la PR sur un plugin du core. Parce que je ne maîtrise franchement pas la mécanique Git dans ce cas. Et que c'est juste une ligne à corriger.
• 11:01
  Anomalie #4674 (Fermé): SPIP 3.1.5 : déclaration de tableau trop moderne Revisions : SPIP
  Bonjour, Ligne 105 de mediabox_pipelines.php : return str_replace(["'", " M'a fait planter un site à la mise à jour de 3.1.2 à 3.1.5 (OVH, PHP 5.3)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:24
  electron ffmpeg mas build "Illegal instruction: 4" - Martin Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to release an electron app on the Mac Apple Store (mas), my electron app uses ffmpeg to render videos. In order to release my app on the mac apple store, It needs to be sandboxed, and by default ffmpeg makes calls to external libraries so I need to statically build ffmpeg and package it with my app. My code is on the 'mas-ffmpeg-fix' branch: https://github.com/MartinBarker/digify/tree/mas-ffmpeg-fix My static ffmpeg build works before I build my app, but after running electron-builder build --mac, the ffmpeg executable now fails with Illegal instruction: 4  (...) -- https://github.com/MartinBarker/digify/tree/mas-ffmpeg-fix, view .sh file here
• 18:39
  Run bat files sequentially (?) [duplicate] - RewossKy Newest 'ffmpeg' Questions - Stack Overflow
  With FFmpeg, I divide 1 video into 675 parts, this process can take a long time depending on the video quality. There are slowdowns towards the middle of the process. I think I'm experiencing freezes because the cpu cache is full. For this, I divided the process in two and added the codes to 2 separate bat files. All I want is to run the 2.bat file after the 1.bat file is running and finished. start 1.bat start 2.bat exit When I do this way, the 2bat file is running at the same (...)
• 18:02
  Hide ffmpeg's console window when running YoutubeDL in GUI application - Božo Stojković Newest 'ffmpeg' Questions - Stack Overflow
  I'm developing a basic application which can download YouTube videos. Throughout the development, I had several quirks, including issues with formats. I decided to use a hopefully foolproof format syntax that youtube-dl will happily download for me in almost any case. Part of my YoutubeDL options look like this: self.ydl_opts = 'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best', 'quiet': True, 'progress_hooks': [self.ydl_progress], 'outtmpl': (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 18:50
  Anomalie #4674 (En cours): SPIP 3.1.5 : déclaration de tableau trop moderne - b b Revisions : SPIP
  Ha oui, on annonce PHP 5.1 mini pour la 3.1, tu payes ta PR ?

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:39
  Using ffmpegtoolkit, how can I add audio to an existing video - Neil Highley Newest 'ffmpeg' Questions - Stack Overflow
  I've managed to merge video streams together using FFMediaToolkit 4.01, but I am unable to Add Audio using yodadude2003's update to ffmpegtoolkit. Here is my sample code: //AudioStream[0] //SampleFormat:SingleP //SampleRate:44100 //SamplesPerFrame:1152 var timespanPerFrame=new TimeSpan(0,0,0,0,1000/settings.Framerate); using(MediaOutput file = MediaBuilder.CreateContainer(exportLocation) .WithVideo(settings) .WithAudio(audiosettings) .Create()) for(var i=0;i And I get the following exception on the (...) -- FFMediaToolkit 4.01, yodadude2003, update to ffmpegtoolkit

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 04:12
  avcodec/avrndec: remove max_lowres value - James Almer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/avrndec: remove max_lowres value The decoder does not support lowres since 9e4225cf7f. Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/avrndec.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:03
  How to record from webcam using ffmpeg with precise time information of when it was taken? - Trac3rZ Newest 'ffmpeg' Questions - Stack Overflow
  I need to record from my 2 webcams and output each frame recorded into images. An additional requirement is I need the time when the image is captured (it has to be precise up to around 10 milliseconds) Things I've tried: ffmpeg -y -f video4linux2 -r $frame_rate -i /dev/video0 -vframes 100 -strftime 1 cam0_"%H-%M-%S".png & ffmpeg -y -f video4linux2 -r $frame_rate -i /dev/video1 -vframes 100 -strftime 1 cam1_"%H-%M-%S".png This is only good up to a second, so if 2 images are taken within 1 second, 1 is overwritten. for i in [1..100] ffmpeg -y -f (...)
• 10:11
  How to find currently streaming file in ffmpeg stream that uses a file list - DigitalDisaster Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg to stream to an RTMP server. I am using the option to provide ffmpeg a text file with a list of files to stream. My file looks like this: ffconcat version 1.0 file 'stream_file1.flv' file 'stream_file2.flv' file 'stream_file3.flv' It loops through these files while streaming. Is there a way to programmatically find out when ffmpeg switches between each file? Either from ffmpeg dumping some logs that I can injest, or by using python to check the state of the stream every (...)
• 10:11
  FFMpeg; Error when mixing two audio stream - Ali Esmailpor Newest 'ffmpeg' Questions - Stack Overflow
  I'm recording two stream by ffmpeg with this command: ffmpeg -protocol_whitelist pipe,udp,rtp -fflags +genpts -f sdp -i pipe:0 \\ -map 0:v:0 -c:v copy \\ -filter_complex \\ "[0:a:0]volume=0.5[a0]; \\ [0:a:1]volume=0.5[a1]; \\ [a0][a1]amerge=inputs=2,pan=stereo|c0 that [0:v:0] is my video stream and [0:a:0] and [0:a:1] are my audio streams that I want to mix them up and record it associate with video stream. But unfortunately, I get this ugly error sometimes that it causes silence in final video. I mean, when I get this error my final video becomes (...)

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 10:57
  Anomalie #4673 (Nouveau): Un array déclaré avec [] Revisions : SPIP
  Bonjour, ligne 324 : if (in_array($version, ['master', 'dev'])) il faudrait if (in_array($version, array('master', 'dev'))) pour être compatible avec de plus vieilles versions de PHP (erreur en 5.3 sur un SPIP 3.1.2)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:52
  Add watermark to a video using ffmpeg in python - AlphaWolf Newest 'ffmpeg' Questions - Stack Overflow
  I want to add watermark for my video, with ffmpeg i found command: ffmpeg -i input.mp4 -i watermark.png -filter_complex "overlay=1500:1000" output.mp4 But it run in cli, not in python code(i cannot found). So have anyway to embbeded it to python code(not call in subprocess)? edit: i found pyffmpeg but no guide to use it too.
• 08:13
  FFMPEG: Too many packets buffered for output stream 0:1 - Der Micha Newest 'ffmpeg' Questions - Stack Overflow
  I want to add a logo to a video using FFMPEG. I encountered this error: "Too many packets buffered for output stream 0:1.", "Conversion Failed.". I tried with diffent pictures and videos, always got the same error. Google didn't help much either. I found a thread C:\\Users\\Anwender\\OneDrive - IT-Center Engels\\_Programmierung & Scripting\\delphi\\_ITCE\\Tempater\\Win32\\Debug\\ffmpeg\\bin>ffmpeg ^ Mehr? -i C:\\Users\\Anwender\\Videos\\CutErgebnis.mp4 ^ Mehr? -i C:\\Users\\Anwender\\Pictures\\pic.png ^ Mehr? -filter_complex "overlay=0:0" ^ Mehr? (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 04:59
  lavu/tx: do not invert permutes on MDCTs - Lynne git.videolan.org Git - ffmpeg.git/rss log
  lavu/tx: do not invert permutes on MDCTs [DH] libavutil/tx_template.c
• 04:19
  lavu/tx: simplify in-place permute search function - Lynne git.videolan.org Git - ffmpeg.git/rss log
  lavu/tx: simplify in-place permute search function [DH] libavutil/tx.c
• 04:11
  lavu/tx: invert permutation lookups - Lynne git.videolan.org Git - ffmpeg.git/rss log
  lavu/tx: invert permutation lookups out[lut[i]] = in[i] lookups were 4.04 times(!) slower than out[i] = in[lut[i]] lookups for an out-of-place FFT of length 4096. The permutes remain unchanged for anything but out-of-place monolithic FFT, as those benefit quite a lot from the current order (it means there's only 1 lookup necessary to add to an offset, rather than a full gather). The code was based around non-power-of-two FFTs, so this wasn't benchmarked early on. [DH] libavutil/tx.c [DH] libavutil/tx_priv.h [DH] (...)
• 00:28
  avcodec/exrenc: add half-float support - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/exrenc: add half-float support [DH] libavcodec/exrenc.c

26 February

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 17:25
  avformat: Deprecate AVFMT_FLAG_PRIV_OPT, remove av_demuxer_open on bump - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat: Deprecate AVFMT_FLAG_PRIV_OPT, remove av_demuxer_open on bump This flag was added in 492026209b9b58eaf6d2ea56423f6b1e1a8a76a5 in conjunction with av_demuxer_open() to allow to pass private options to demuxers. It worked as follows: av_open_input_stream() (the predecessor of avformat_open_input()) would not call the read_header function if this flag is set. Instead the user could set private options of the demuxer via the format's private class after avformat_open_input() and then call av_demuxer_open() which called the format's read_header function. This approach was (...)
• 15:47
  avcodec/exr: add DWA decompression support - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/exr: add DWA decompression support [DH] libavcodec/exr.c
• 09:48
  avcodec/mpegvideo: Schedule unused, deprecated rc_strategy for removal - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec/mpegvideo: Schedule unused, deprecated rc_strategy for removal Deprecated in d05c3b9ceeb9d00d4500c376448230e45f6ab108. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavcodec/mpegvideo.h [DH] libavcodec/version.h
• 09:49
  doc/codecs.texi: Remove removed or ineffective options - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  doc/codecs.texi: Remove removed or ineffective options Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] doc/codecs.texi
• 23:22
  avcodec: add missing FF_API_OLD_ENCDEC wrappers to xmm clobber functions - James Almer git.videolan.org Git - ffmpeg.git/rss log
  avcodec: add missing FF_API_OLD_ENCDEC wrappers to xmm clobber functions Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/aarch64/neontest.c [DH] libavcodec/arm/neontest.c [DH] libavcodec/x86/w64xmmtest.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:08
  FFMPEG randomly gets killed with SIGKILL on fluent-ffmpeg - jaimish11 Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on an Electron app with a Node backend and a React frontend. I'm using fluent-ffmpeg to stream data from an external RTSP feed and render the feed on my app. The feed renders and displays fine but it's randomly killed after a few minutes. (sometimes within seconds, it's unreliable) This is the error message I get: Error: ffmpeg was killed with signal SIGKILL I printed out the stderr variable within one of the library's core files and this is the error that is thrown whenever a SIGKILL occurs: [rtsp ⓐ 0x7fc9ad80be00] RTP: missed 1 (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 08:38
  fftools/ffmpeg_filter: Don't use deprecated function - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  fftools/ffmpeg_filter: Don't use deprecated function avcodec_find_best_pix_fmt_of_2 has been moved to libavutil in 617e866e25b72fa5d9f9d6bbcbd7e4bd69e63a54. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] fftools/ffmpeg_filter.c
• 07:38
  avcodec: Add missing FF_API define for libavcodec pix fmt API - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec: Add missing FF_API define for libavcodec pix fmt API avcodec_find_best_pix_fmt2 has been deprecated and replaced by avcodec_find_best_pix_fmt_of_2 in 2a54ae9df8cbc1717b3929222ac75f384e2ff240. avcodec_find_best_pix_fmt_of_2 and avcodec_get_pix_fmt_loss meanwhile were deprecated in 617e866e25b72fa5d9f9d6bbcbd7e4bd69e63a54 when these functions were de facto moved to libavutil; this has been mentioned in APIchanges in f7a1c5e4d2294a8970ede7f6deb2fe0a64e202a5. Yet the attribute_deprecated was never set for the latter two functions and they were not wrapped in an FF_API define. This (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:04
  FFmpeg stream stops after a certain time - Anarno Newest 'ffmpeg' Questions - Stack Overflow
  We have a little Nodejs app, which starts a stream process, with a child_process.spawn. On the client-side, we have an HTML5-canvas element, which records the video data new MediaRecorder(canvas.captureStream(30), config), then this client sends its data to our Nodejs server over a WebSocket connection. We using FFmpeg for video encoding and decoding, then we send the data to our 3-rd party service (MUX), which accepts the stream and broadcasts them. Sadly the process continuously loses its fps, and after in general 1 minute, stops with an interesting error code. (when we save the video (...)
• 13:31
  Couldn't find ffmpeg or avconv on linux server - Văn Hoàng Nguyễn Newest 'ffmpeg' Questions - Stack Overflow
  I installed ffmpeg and pydub successfully on my linux server. And test with python environment ok. But when i running my code on nginx + gunicorn + django, its alert with error /home/www/env/lib64/python3.8/site-packages/pydub/utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work Someone can help me ? --
• 11:55
  Unknown encoder 'libx265' - user42 Newest 'ffmpeg' Questions - Stack Overflow
  I'm running the following command on my Ubuntu 20.04 ffmpeg -i input.mp4 -vcodec libx265 -crf 28 -f mp4 output.mp4 I get the statement: Unknown encoder 'libx265' I installed the encoder with the command sudo apt-get install libx265-dev libnuma-dev but I still get the same message. Do you know what I am doing wrong or how to get ffmpeg to work with this encoder?
• 11:35
  I need command to overlay video at specied time - Norman Nye Newest 'ffmpeg' Questions - Stack Overflow
  I have two video, one length video (main) and other 6 second length (bg). I want to overlay bg over main after every 20 second. I try some ways but after bg run, video stop or if it can run it show bg only one time and no more loop. ffmpeg -y -i "input.*" -stream_loop -1 -i bg.mp4 -filter_complex "[0:v]scale=1280:720[v0];[1:v]scale=1280:720[v1];[v0][v1]overlay=enable='lt(mod(t,20),6)':shortest=1" -vcodec libx264 -pix_fmt yuv420p -b:v 3000k -acodec libmp3lame -b:a 128k -ar 44100 -r 20 -ac 2 -threads 0 -shortest -preset superfast "output.mp4" Please help (...)
• 11:09
  merge/combine two FFMPEG commands together into one command - Mayank Thapliyal Newest 'ffmpeg' Questions - Stack Overflow
  I have been processing videos for a while and I have been using ffmpeg to make my life easy. But there are two commands which I want to combine into single command:- Step 1:- Divide a video vertically into two parts and then stack them horizontally ffmpeg -i usa.mp4 -filter_complex "[0]crop=iw:ih/2:0:0[top];[0]crop=iw:ih/2:0:oh[bottom];[top][bottom]hstack" -preset fast -c:a copy usa$.mp4 Step 2:- Combine 3 videos into single video (the video from Step 1 will be in between the start.mp4 and end.mp4) ffmpeg -i start.mp4 -i usa$.mp4 -i end.mp4 -vsync 2 -filter_complex (...)
• 07:20
  How can we merge two video in which one is horizontal resolution and other one is vertical resolution without stretching it using ffmpeg? - Rohan Patil Newest 'ffmpeg' Questions - Stack Overflow
  I want to make an application that merge two video, in which one video is of vertical resolution and other one is of horizontal resolution. I managed to merge but it leads to stretching of video which ideally shouldn't happen. Does anyone have any idea to do this? Thank you! command = new String[]"-y", "-i", video1.mp4, "-i", video2.mp4,"-strict", "experimental", "-filter_complex", "[0:v]scale=1920x1080,setdar=4:3[v0];[1:v]scale=1920x1080,setdar=4:3[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1", "-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "1920x1080", "-vcodec", (...)
• 06:57
  Trimming batch of videos using timestamp - Raghav Arora Newest 'ffmpeg' Questions - Stack Overflow
  I want to cut multiple videos in folder based on their starting and ending time which is stored in a csv file: annotations.csv The format of the csv file is: video_name | starting time | ending time I think the pseudo code may look something like this: `for i in video_names do: cut video according to time frame` ffmpeg -ss 00:01:00 -i input.mp4 -to 00:02:00 -c copy output.mp4 This is something I found for a single video while hardcoding the input names and start and end time. How can I make this dynamic to correspond with my annotations (...)
• 06:52
  Cannot use Mobile FFmpeg and LibVLCSharp together in Xamarin.Forms project - Travis P Newest 'ffmpeg' Questions - Stack Overflow
  I am adding video stream capture functionality to a Xamarin Forms project. I am trying to use VLC's LibVLCSharp.Forms (https://github.com/videolan/libvlcsharp) package and the Mobile ffmpeg Xamarin wrapper package, Laerdal.Xamarin.FFmpeg.* (https://github.com/Laerdal/Laerdal.Xamarin.FFmpeg.iOS). However, the internal ffmpeg library from VLC is conflicting with the ffmpeg wrapper and is built with different flags which exclude functionality that I need. For native development, it looks like you can configure a preferred library with the OTHER_LDFLAGS flag in the (...) -- https://github.com/videolan/libvlcsharp, https://github.com/Laerdal/Laerdal.Xamarin.FFmpeg.iOS, https://github.com/tanersener/mobile-ffmpeg/wiki/Using-Multiple-FFmpeg-Implementations-In-The-Same-iOS-Application
• 05:43
  How do I receive buffered files or streams from the fluent-ffmpeg module? - yahoo2344 Newest 'ffmpeg' Questions - Stack Overflow
  Logic was created to replace gif files with mp4 files. However, after saving the gif file to the server, the file is imported and converted to an mp4 file, the mp4 file is saved to the server and the file is read to return the buffer. Here's a question. When I recall files from the fmpeg module, can I receive them in a buffer or stream instead of a path? Is there a way to receive the converted file as a buffer or stream without saving it? return new Promise((resolve, reject) => fs.writeFile(path.join(__dirname, `input.gif`), file, (err) => (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 05:40
  lavu/tx: require output argument to match input for inplace transforms - Lynne git.videolan.org Git - ffmpeg.git/rss log
  lavu/tx: require output argument to match input for inplace transforms This simplifies some assembly code by a lot, by either saving a branch or saving an entire duplicated function. [DH] libavutil/tx.h [DH] libavutil/tx_template.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 03:00
  FFmpeg: Concatenate .webm files some are video only some audio only some with both - Lenny Linus Newest 'ffmpeg' Questions - Stack Overflow
  In my case I have 3 .webm files the first one is audio only, the second one is video only, the third one is audio and video. I want to concatenate them into a single file which shows black screen for audio only parts, video for video only parts, and plays both for the parts that have audio and video. The video codec is VP8, the audio codec is Opus. concat.txt contains the entries for the three files I am using the following command to concatenate them. ffmpeg -f concat -safe 0 -i ./concat.txt -c copy -y output.webm This command creates the output file, (...)
• 02:26
  Create Panorama from Non-Sequential Video Frames - M.Innat Newest 'ffmpeg' Questions - Stack Overflow
  There is a similar question (not that detailed and no exact solution). I want to create a single panorama image from video frames. And for that, I need to get minimum non-sequential video frames at first. A demo video file is uploaded here. What I Need A mechanism that can produce not-only non-sequential video frames but also in such a way that can be used to create a panorama image. A sample is given below. As we can see to create a panorama image, all the input samples must contain minimum overlap regions to each other otherwise it can not be done. So, if I (...) -- here, , above, video instruction,
• 01:39
  Increase volume on multiple files - Reckless Velociraptor Newest 'ffmpeg' Questions - Stack Overflow
  Let say I have a couple of hundreds mp3 files. How do I increase volume in all of them with ffmpeg? This is for single file: ffmpeg -i input.mp3 -filter:a "volume=1.5" output.mp3 And what about multiple files with one command?

25 February

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 05:02
  fftools: Switch to const AVCodec * where possible - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  fftools: Switch to const AVCodec * where possible The obstacle to do so was in filter_codec_opts: It uses searches the AVCodec for options via the AV_OPT_SEARCH_FAKE_OBJ method, which requires using a void * that points to a pointer to a const AVClass. When using const AVCodec *, one can not simply use a pointer that points to the AVCodec's pointer to its AVClass, as said pointer is const, too. This is fixed by using a temporary pointer to the AVClass. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] fftools/cmdutils.c [DH] fftools/cmdutils.h [DH] (...)
• 09:25
  avcodec/libx264: Don't use init_static_data for newer versions - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec/libx264: Don't use init_static_data for newer versions x264 versions >= 153 can support multiple bitdepths; they also don't export x264_bit_depth any more. The actual check whether a bitdepth is supported is therefore performed at runtime in x264_encoder_open. Ergo it is unnecessary to use init_static_data for these versions: One can already set ff_libx264_encoder.pix_fmts to the value that X264_init_static always sets it to. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] (...)
• 21:30
  avcodec/options: deprecate avcodec_get_frame_class() - James Almer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/options: deprecate avcodec_get_frame_class() AVFrame hasn't been a struct defined in libavcodec for a decade now, when it was moved to libavutil. Found-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] doc/APIchanges [DH] libavcodec/avcodec.h [DH] libavcodec/options.c [DH] libavcodec/version.h

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:21
  Picture size 0x0 is invalid: trying to downsample 4k raw video into 1080 using ffmpeg - neetu sigger Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg -i CityAlley_3840x2160_50fps_8bit.yuv -vf scale=1920:1080 CityAlly.yuv But I got the error: ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2) configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray (...)
• 23:20
  AWS ffmpeg-lambda-layer and concat protocol (Node.js) - portik Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to concatenate two .mp3 files using ffmpeg lambda-layer. I have what I think is the correct command, but I struggle to represent it in code so that it is formatted correctly for the lambda layer. Here is a piece of code that I am struggling to get right: spawnSync( '/opt/ffmpeg/ffmpeg', [ '-i', '"concat:/tmp/pt1.mp3|/tmp/pt2.mp3"', '-acodec', 'copy', `/tmp/$fileName` ], stdio: 'inherit' ) The error I'm getting: "concat:/tmp/pt1.mp3|/tmp/pt2.mp3": No (...) -- https://lists.ffmpeg.org/pipermail/ffmpeg-user/2019-December/046299.html, https://trac.ffmpeg.org/wiki/Concatenate#protocol
• 23:26
  Error using FFmpeg.wasm for audio files in react: "ffmpeg.FS('readFile', 'output.mp3') error. Check if the path exists" - Rayhan Memon Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently building a browser-based audio editor and I'm using ffmpeg.wasm (a pure WebAssembly/JavaScript port of FFmpeg) to do it. I'm using this excellent example, which allows you to uploaded video file and convert it into a gif: import React, useState, useEffect from 'react'; import './App.css'; import createFFmpeg, fetchFile from 'ⓐffmpeg/ffmpeg'; const ffmpeg = createFFmpeg( log: true ); function App() const [ready, setReady] = useState(false); const [video, setVideo] = useState();  (...) --

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 23:04
  avformat/imx: set video stream duration - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avformat/imx: set video stream duration [DH] libavformat/imx.c
• 21:42
  avcodec/imx: use ff_reget_buffer() - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/imx: use ff_reget_buffer() Also flush internal stuff upon seeking. This codec is not intra only. [DH] libavcodec/imx.c [DH] libavformat/imx.c
• 21:17
  avcodec: unschedule removing some functions with FF_API_COPY_CONTEXT - James Almer git.videolan.org Git - ffmpeg.git/rss log
  avcodec: unschedule removing some functions with FF_API_COPY_CONTEXT These functions were never deprecated. The merge from commit 6988cf2969 included them by mistake. Found-by: mkver Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/avcodec.h
• 21:15
  Revert "avcodec/options: add missing FF_API_COPY_CONTEXT checks" - James Almer git.videolan.org Git - ffmpeg.git/rss log
  Revert "avcodec/options: add missing FF_API_COPY_CONTEXT checks" This reverts commit 0191f2d29c2a62b8699ac75f09708187e943814c. These functions were never deprecated. The merge from commit 6988cf2969 included them by mistake. Found-by: mkver Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavcodec/options.c
• 18:27
  avformat/avlanguage: Remove long disabled av_convert_lang_to - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/avlanguage: Remove long disabled av_convert_lang_to 1582e306a47977b09fddb029b999f99eb03cd485 scheduled it for removal with libavformat major version 58, but it was never removed. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/avlanguage.c [DH] libavformat/avlanguage.h
• 16:30
  avfilter/lavfutils.h: Don't include avformat.h - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avfilter/lavfutils.h: Don't include avformat.h Only lavfutils.c needs avformat.h, not lavfutils.h. Reviewed-by: James Almer <jamrialⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavfilter/lavfutils.c [DH] libavfilter/lavfutils.h
• 01:45
  avcodec/avcodec: Add missing deprecation to AVCodecParser.next - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avcodec/avcodec: Add missing deprecation to AVCodecParser.next The whole old next API has been deprecated in commit 7e8eba2d8755962d9dca5eade57bf8f591a73c0c, yet deprecating the next pointer has been forgotten (the next pointers of other structures are below the public API delimiter, but such a delimiter doesn't exist for AVCodecParser). Reviewed-by: James Almer <jamrialⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavcodec/avcodec.h [DH] (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:14
  How to tell from a media file if it's a video or an audio? [duplicate] - Random Name Newest 'ffmpeg' Questions - Stack Overflow
  I have some files - audio and video files - stored in an aws s3 bucket, which can have different containers and stuff, and I would like to send them to the aws mediaConvert(MC). My issue is that I need to know whenever the file is an audio or a video file, because I need to configure the MC accordingly. The main app on the server is php based, but this information might not be that interesting. I have ffmpeg, and I already use ffprobe to get the file duration, however I can't tell from the returning data if it's a video or audio-only file. And in an another question someone (...)
• 21:19
  ffmpeg opus -b:a 160k is it a fixed bit rate or variable bit rate - user2718593 Newest 'ffmpeg' Questions - Stack Overflow
  the manual says that with opus codec it is by default : compression_level 10 (best=10) vbr on so ffmpeg -i "INPUT.flac" -c:a libopus -b:a 160k "encoded160.opus" is it a vbr which average 160k in a certain range (+/-30k ??) or a fixed bitrate targeting 160k ?
• 19:12
  How to implement multiple video resolutions on front and back-end - LanGuu Newest 'ffmpeg' Questions - Stack Overflow
  I need a solution or hint on how should I handle multiple resolutions on front-end and back-end. I have been reading about hls, dash, and mse for last few days but the more information I read, the more lost I am. Right now I have only a microservice for downscaling video using FFmpeg. The FFmpeg returns mp4 with no hls or dash, 4 video resolutions with no sound, and 2 different audio quality. On front-end, I use react-player. The hardest part is that I need to merge audio and video, synchronize and handle change quality events. I have found Media source extensions but it (...) -- react-player
• 18:39
  Using ffprobe to check if file is audio or video only - David542 Newest 'ffmpeg' Questions - Stack Overflow
  Is there an ffprobe command I can run to see if an mov file that I have is audio-only or contains video as well? I have various mov files, some of which are audio dubs and some of which are full videos.
• 18:34
  ffmpeg "Underestimated required buffer size" - Kajuna Newest 'ffmpeg' Questions - Stack Overflow
  I'm seeing this error on some Windows machine when converting an 8K png stream to ProRes 4444 with ffmpeg. The command looks like ffmpeg -f image2pipe -framerate 30000/1001 -i - -c:v prores_ks -y output.mov And the output ffmpeg version git-2020-06-17-0b3bd00 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9.3.1 (GCC) 20200523 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame (...)
• 18:26
  Video created via shell_exec() does not play, but video created via terminal does - Mukul Kashyap Newest 'ffmpeg' Questions - Stack Overflow
  I am creating a video from single audio and single image and it is fine when the audio length less than 10 seconds but when the audio length exceeds 10 seconds then video not playing. I am using FFmpeg to create video using shell_exec(). The video is fine when I directly runs the FFmpeg command on the terminal but the only issue comes with the shell_exec command. This command I am using - ffmpeg -loop 1 -f image2 -i $this->img_url -i $this->audio_url -vf scale=1920*1080 -pix_fmt yuv420p -vcodec libx264 -shortest (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 16:36
  avfilter/vf_vif: add support for more formats - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avfilter/vf_vif: add support for more formats [DH] libavfilter/vf_vif.c
• 15:52
  avfilter/vf_vif: simplify case comparing same inputs - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avfilter/vf_vif: simplify case comparing same inputs [DH] libavfilter/vf_vif.c
• 07:37
  avformat/wavenc: Improve unsupported codec error messages - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/wavenc: Improve unsupported codec error messages Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] libavformat/wavenc.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:34
  Trimming multiple videos using text file - Raghav Arora Newest 'ffmpeg' Questions - Stack Overflow
  I want to cut multiple videos based on their starting and ending frame which is stored in a text file: annotations.txt The format of the text file is: video_name | category_name | starting frame | ending frame I think the pseudo code may look something like this: for i in video_name: for j in start_end_frame: trim_video() ffmpeg -ss 00:01:00 -i input.mp4 -to 00:02:00 -c copy output.mp4 This is something I found for a single video while hardcoding the input names and start and end time. How can I make this dynamic to correspond with my (...)
• 15:32
  Creating video from single long audio and single image then created video not playing - Mukul Kashyap Newest 'ffmpeg' Questions - Stack Overflow
  I am creating a video from single audio and single image and it is fine when the audio length less than 10 seconds but when the audio length exceeds 10 seconds then video not playing. I am using FFmpeg to create video using shell_exec(). The video is fine when I directly runs the FFmpeg command on the terminal but the only issue comes with the shell_exec command. This command I am using - ffmpeg -loop 1 -f image2 -i $this->img_url -i $this->audio_url -vf scale=1920*1080 -pix_fmt yuv420p -vcodec libx264 -shortest ".$video_local_dir.$video_name; Please help me to fix this (...)
• 15:01
  How can i mux H264 stream into MP4 file via libavformat - Brian Newest 'ffmpeg' Questions - Stack Overflow
  I want to realize an application that firstly decode a multi-media file(such as test.mp4 file, video codec id is H264), get a video stream and an audio stream, then make some different in the audio stream, at last encode the video stream(use libx264) and audio stream into a result file(result.mp4). To promote the efficiency, i omitted the decode and encode of video stream, i get the video packet via function "av_read_frame", then output it directly into the result file via function "av_write_frame". But there is no picture in the output file, and the size of output file is fairly (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 07:38
  avfilter/vf_vif.c: fix build warning for [-Wmain] - Guo, Yejun git.videolan.org Git - ffmpeg.git/rss log
  avfilter/vf_vif.c: fix build warning for [-Wmain] src/libavfilter/vf_vif.c: In function ‘process_frame’: src/libavfilter/vf_vif.c:542:20: warning: ‘main’ is usually a function [-Wmain] AVFrame *out, *main = NULL, *ref = NULL; ^~~~ Signed-off-by: Guo, Yejun <yejun.guoⓐintel.com> [DH] libavfilter/vf_vif.c
• 07:38
  avfilter/vf_ssim.c: fix build warning for [-Wmain] - Guo, Yejun git.videolan.org Git - ffmpeg.git/rss log
  avfilter/vf_ssim.c: fix build warning for [-Wmain] The build warning message: src/libavfilter/vf_ssim.c: In function ‘ssim_plane_16bit’: src/libavfilter/vf_ssim.c:246:24: warning: ‘main’ is usually a function [-Wmain] const uint8_t *main = td->main_data[c]; ^~~~ src/libavfilter/vf_ssim.c: In function ‘ssim_plane’: src/libavfilter/vf_ssim.c:289:24: warning: ‘main’ is usually a function [-Wmain] const uint8_t *main = td->main_data[c]; ^~~~ Signed-off-by: Guo, Yejun <yejun.guoⓐintel.com> [DH] (...)

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:12
  Use ffmpeg as external tool to stream 2 or more different sources via pipeline - StackDOX Newest 'ffmpeg' Questions - Stack Overflow
  I have an application running on an embedded system. This application has 2 video sources (and, theorically, 1 audio source). Concentrating to the video sources, I have 2 subprocess that computes different frames sets (unrelated each others). I want to send these frames to 2 differents streams. I would to avoid to write a lot of ffmpeg/libav code. I have ffmpeg compiled for the embeeded system and I can use it as tool. For example, I can write to the stdout the first frames set and pass it to the ffmpeg like this: ./my_app|ffmpeg -an -i - -vcodec copy -f rtp (...)
• 08:36
  ffmpeg pipe to generate h264 chunks from numpy array or bgr24 bytes - harsh solanki Newest 'ffmpeg' Questions - Stack Overflow
  is there a possibility if someone can help me with FFmpeg pipe to generate h264 chunks from NumPy array This is what I am doing now: process = ( ffmpeg .input('pipe:', format='rawvideo', pix_fmt='bgr24', s='x'.format(self._deeptwin.image_width, self._deeptwin.image_height)) .output(path, pix_fmt='yuv420p', vcodec='libx264', r=25) .overwrite_output() .run_async(pipe_stdin=True) ) for res in response: st = datetime.datetime.now() print(f'res.status image res.id rendered at (...)
• 07:51
  Does libavcodec provide a way to replace the video frames in an input, leaving the audio untouched? - Sniggerfardimungus Newest 'ffmpeg' Questions - Stack Overflow
  I have a working project, congealed together using a number of examples, that extracts video frames from a .mp4, does some rendering over the top of them, then writes a new video with the new frames. The trouble is, I lose the audio in this process. When I add an avformat stream to the output video, I start getting cryptic crashes in mux.c::compute_muxer_pkt_fields, where st->internal->priv_pts is null. I've rather reinvented the wheel here - doing the full video decode and frame extraction, followed by writing my own code to create a new video. It seems that someone has to have (...) -- like this
• 07:39
  ffmpeg: error reading header pipe:0: Invalid argument - Дмитрий Бондаренко Newest 'ffmpeg' Questions - Stack Overflow
  I need microservice (converter audio using streams), but have problem with ffmpeg my test ffmpeg package codec import ( "bytes" "os" "os/exec" "testing" ) func Test1(t *testing.T) in, err := os.Open("/mp4-mp3/src.m4a") if err != nil t.Fatal(err.Error()) out, err := os.OpenFile("/mp4-mp3/out.mp3", os.O_RDWR|os.O_CREATE, 0666) if err != nil t.Fatal(err.Error()) cmd := exec.Command( "ffmpeg", "-f", "m4a", "-i", "pipe:0", "-f", "mp3", "pipe:1") cmd.Stdin = (...)
• 09:24
  Duplicated frames when mering multiple videos with xfade filter (ffmpeg) - tjk Newest 'ffmpeg' Questions - Stack Overflow
  I'm stuck with merging multiple videos with audio. This used to work on most videos I merged before but with some videos, I get the "More than 1000 frames duplicated" warning, and the output video is broken (some videos won't play, just static picture and the sound is misaligned). All videos are in the same format afaik. The only difference I see is that some are "yuvj420p(pc)" and most are "yuv420p". But I tried merging without those with "yuvj420p(pc)" and it didn't help. Already tried adding "-vsync vfr", didn't help too. Interestingly — if I remove the (...)
• 09:18
  Merging multiple video files with ffmpeg and xfade filter - tjk Newest 'ffmpeg' Questions - Stack Overflow
  I need to merge multiple video files (with included audio) into a single video. I've noticed xfade has been recently released and used it but I am running into an audio sync issue. All videos are in the same format / resolution / fame and bitrate / etc both for video and audio. Here is what I am using to merge 5 videos of various durations with 0.5 crossfade transitions: ffmpeg \\ -i v0.mp4 \\ -i v1.mp4 \\ -i v2.mp4 \\ -i v3.mp4 \\ -i v4.mp4 \\ -filter_complex \\ "[0][1]xfade=transition=fade:duration=0.5:offset=3.5[V01]; \\  (...)
• 09:14
  Combining three or more videos with ffmpeg and the xfade filter - sil Newest 'ffmpeg' Questions - Stack Overflow
  As of 2020 ffmpeg has the xfade filter which can combine videos with a transition. Combining two videos is easy enough: ffmpeg -i vid1.mp4 -i vid2.mp4 \\ -filter_complex [0][1]xfade=transition=pixelize:duration=1:offset=4,format=yuv420p" \\ out.mp4 But I don't understand how to combine three videos (so that v1 fades into v2 and v2 then fades into v3. I tried something like this: ffmpeg -i vid1.mp4 -i vid2.mp4 -i vid3.mp4 \\ -filter_complex (...) -- xfade filter
• 09:05
  Crossfading between two audio files with ffmpeg? - RocketNuts Newest 'ffmpeg' Questions - Stack Overflow
  I have two mp3 files and want to concatenate them to one new file. However, I want only a part of each file, and I would like to create a cross fade between the two. So for example I want the first 3 minutes of a.mp3, and then during 5 seconds a crossfade to b.mp3 starting at the 1:20 minute mark (within b.mp3). Here's a timeline illustration of what I want: So the total length of the resulting file would be the 3:05 minutes plus the length of b.mp3 minus 1:25 minutes, which comes down to the length of b.mp3 plus 1:40 minutes. I am (...)
• 09:00
  android - ffmpeg - making crossfade between 5 videos - LuongTruong Newest 'ffmpeg' Questions - Stack Overflow
  I want to make a small slideshow app which is able to do some effect like fade in, fade out, and crossfade between multiple videos by using ffmpeg4android. After a few hours researching, I am still getting stuck in doing crossfade. Following this suggestion, I am able to create a crossfade but it is not work perfectly. The problem is that I want to combine 5 videos with crossfade effect between them and the duration of each video is 5 seconds. As a result, the output file is only 5 seconds instead of 25 seconds and there is a crossfade effect in the end of output (...) -- ffmpeg4android, Please download the log file here
• 08:44
  FFmpeg command for crossfading between 5 videos .How to manage setpts=PTS-STARTPTS? - Harsh Bhavsar Newest 'ffmpeg' Questions - Stack Overflow
  Here, New in FFmpeg . I am using and testing in console in FFmpeg . I already done with 2 video join with cross fading with this question : I am doing for 5 videos merging with cross fade I just done 90% in merging i just need to manage setpts=PTS-STARTPTS Just look into this pls. ffmpeg -i big_buck.mp4 -i big_buck.mp4 -i big_buck.mp4 -i big_buck.mp4 -i big_buck.mp4 -filter_complex "[0:v]trim=0:4,setpts=PTS- STARTPTS,fade=out:st=4:d=1:alpha=1[1]; (...)
• 05:39
  Jupyter Notebook JSONDecodeError to open file - potterykid Newest 'ffmpeg' Questions - Stack Overflow
  Expected behavior: open a mp3 with no error Actual behavior: I used the script below, from pydub import AudioSegment song = AudioSegment.from_mp3("audio.mp3") and there is a JSONDecodeError JSONDecodeError: Expecting value: line 1 column 1 (char 0) JSONDecodeError Traceback (most recent call last) in 6 dst = "research.wav" 7 ----> 8 sound = AudioSegment.from_mp3(src) 9 sound.export(dst, format = "wav") ~/opt/anaconda3/lib/python3.8/site-packages/pydub/audio_segment.py in from_mp3(cls, file, parameters) 736 (...)