150 posts

19 August

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

05:16
SDL Audio - Plays only Static Noise - bcpermafrost Newest 'ffmpeg' Questions - Stack Overflow

Im having an issue with playing audio. Im new to the SDL World of things so im learning from a tutorial. http://dranger.com/ffmpeg/tutorial03.html As far as audio goes, i have exactly what he put down and didnt get the result he says I should get. In the end of the lesson he specifies that the audio should play normally. However all i get is excessively loud static noise. This leads me to believe that the packets arent being read correctly. However I have no idea how to debug or look for the issue. Here is my main loop for parsing the packets: while (av_read_frame(pFormatCtx, (...) -- http://dranger.com/ffmpeg/tutorial03.html
04:17
Applying the same filter many times before output - Fabián Newest 'ffmpeg' Questions - Stack Overflow

In my video there's an object that has shades of yellow (more orange-like) and has a solid yellow as background. I need to output all frames into a png sequence, using a color key filter to replace the yellow from the background: ffmpeg -ss 4 -i original.mp4 -t 2 -filter_complex "[0:v]colorkey=0xfff31b:0.125:0[ckout]" -map "[ckout]" colorkey-%d.png This removes all the yellow background. However, it leaves some pints of yellow behind, and some items are yellow-themed, so blending isn't an option for this scenario. In the end I need to get rid of 4 specific yellow-colors from the frames: (...)
04:08
How can I overlay a video ontop of background image? - user11588722 Newest 'ffmpeg' Questions - Stack Overflow

I have a command which creates waves ontop of a background image: ffmpeg -y -i "Assets/Screens/new.png" -i "Temp/video.mp4" -i "Temp/audio.mp3" -filter_complex "[2:a]showwaves=mode=cline:s=255x81:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[w];[v][w]overlay=240:594,scale=1920:1080[outv]" -map "[outv]" -map 2:a -movflags +faststart -c:v libx264 -c:a aac -preset veryfast -shortest "output.mp4" How can I also overlay a 1024x576px video at position 756:252? I have already included the video file as the second (1:v) input, but I can't seem to get the filters to play (...)
01:31
ffmpeg - No NVENC capable devices found - Srikanth Bandaru Newest 'ffmpeg' Questions - Stack Overflow

I am having difficulties in using the NVEnc capabilities of my RTX2070 on a Windows 10 machine. I've used "media-autobuild_suite" to compile FFmpeg and other libraries for my machine. I've updated my drivers to version 431.70 and I've also installed CUDA Toolkit 10.1 hevc_nvenc is working fine ffmpeg -hwaccel cuvid -i output/frames/%6d.png -c:v h264_nvenc -preset slow -tune animation -r 30 -pix_fmt yuv420p output.mp4 But h264_nvenc is throwing the below error No NVENC capable devices (...)

18 August

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

22:54
ffmpeg concat: "Unsafe file name" - sers Newest 'ffmpeg' Questions - Stack Overflow

Trying to convert a bunch of mts-files into a big mp4-file: stephanⓐrechenmonster:/mnt/backupsystem/archive2/Videos/20151222/PRIVATE/AVCHD/BDMV$ ~/bin/ffmpeg-git-20160817-64bit-static/ffmpeg -v info -f concat -i Any ideas what goes wrong here? What does the term "unsafe file" mean in this context?

Revisions : jquery-mousewheel - GitHub http://github.com/brandonaaron/jquery-mousewheel/commits/master

22:03
Don't clobber mouse offset properties if we don't adjust them - dmethvin Revisions : jquery-mousewheel - GitHub

Don't clobber mouse offset properties if we don't adjust them Fixes #165
20:25
Remove browserify test - dmethvin Revisions : jquery-mousewheel - GitHub

Remove browserify test Fixes #150

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

20:11
How to capture ffmpeg output in rails? - HelloWorld Newest 'ffmpeg' Questions - Stack Overflow

I'm running a ffmpeg command to try to get the duration of a video file, the command is as follows... system('ffmpeg -i C:\\Users\\example\\Desktop\\video9.mp4 -f ffmetadata') When I run that line it outputs a lot of info to the rails console, including duration. But how would I capture that info so I can split it and grab the data I need? (I'm doing this inside a rails controller) When I run something like this... metadata = system('ffmpeg -i C:\\Users\\example\\Desktop\\video9.mp4 -f ffmetadata') puts metadata All it returns is (...)

Revisions : jquery-mousewheel - GitHub http://github.com/brandonaaron/jquery-mousewheel/commits/master

20:01
Use .on/.off for event binding, thanks ⓐayumihamsaki - dmethvin Revisions : jquery-mousewheel - GitHub

Use .on/.off for event binding, thanks ⓐayumihamsaki Closes #201
20:00
"Browsers, Operating Systems, and Devices" does not need to be capita… - EvanHahn Revisions : jquery-mousewheel - GitHub

"Browsers, Operating Systems, and Devices" does not need to be capitalized

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

17:22
What is the difference between libx264 and h264_nvenc? - Jonathan Morrall Newest 'libx264' Questions - Stack Overflow

I am trying to encode some videos but when I use the libx264 they don't work but change the codec to h264_nvenc and they play. If I change the profile to baseline when using the libx264 the videos play. what is the difference? I could use the h264_nvenc but I want to use the libx264 for the better quality for storage. My code bin\\ffmpeg -i "Input-File" -c:v h264_nvenc -bf 3 -b_strategy 2 -temporal-aq 1 -rc-lookahead 20 -profile:v high -preset slow -rc vbr_hq -rc:v vbr_hq -qmin 0 -cq:v 19 -b:v 900k -maxrate:v 5000k -bufsize 2000K -c:a aac -ar 48000 -b:a 128k (...)

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

17:41
Can't invoke FFmpeg.getInstance in Android Java development - BoredDev Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to use FFmpeg in Android Studio but i cant invoke some methods: 1) FFmpeg ffmpeg = FFprobe.getInstance(context); Method getInstance don't "exist" 2) ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() ExecuteBinaryResponseHandler don't exist However i tried to execute ffmpeg.execute and everything works fine. To "install" FFmpeg i did what i found in https://github.com/bravobit/FFmpeg-Android For that i mean: i included dependencies in gradle dependencies implementation 'nl.bravobit:android-ffmpeg:1.1.7' And that's it... Here is the code that FFmpeg works(but (...) -- https://github.com/bravobit/FFmpeg-Android
17:36
Audio async when concatenating two videos - John Smith Newest 'ffmpeg' Questions - Stack Overflow

I am concatenating two videos (mp4 files) using ffmpeg command. The resulted video file creates issue with audio. The video frames lags in comparison with audio. I have tried using "aresample" and "apad" properties of ffmpeg to tackle the issue but it didn't resolved the issue. Command used for concat 2 mp4 files is as follows :- ffmpeg -y -safe 0 -f concat -i samplefilepath1.txt -c copy concat.mp4 samplefilepath1.txt contains path of both sample videos which needs to be concatenated:- file sample1.mp4 (filepath 1) file sample2.mp4 (filepath 2) The video frames lags in comparison (...) -- https://gofile.io/?c=nXJckX
13:48
Could not find tag for codec h264 in stream #0 (mp4) - TabsNotSpaces Newest 'ffmpeg' Questions - Stack Overflow

I've been using the sickbeard_mp4_converter for a while to convert video files to mp4 by generating a script for ffmpeg. I'm not sure what I changed, but the ffmpeg script it generates no longer works and I'm having trouble debugging it. Can anyone tell from my log what the issue is? Yes, its supposed to be an mp4 to an mp4, which is typically fine. I'm at the point where I'm using an mp4 that worked with the same autogenerated script yesterday but it no longer is. I remember updating ffmpeg but downgrading did not resolve the issue, though I may have not downgraded enough. ffmpeg 4.1.4 (...) -- sickbeard_mp4_converter
13:15
Java sound vs C sound api in sound result - Ahmed Newest 'ffmpeg' Questions - Stack Overflow

i finish developing a conference chat app using java, and i used mp3 as encoder and javacv ( ffmpeg ) as a library, but the sound i get not sonorous like Paltalk app i used java sound api to capture the sound then store the sound in a buffer , send it to the encoder and get the compressed bytes and send it via socket then decode it and play it in speaker. the sound format was like 44100 sample rate when i capture the sound in java and in encoder it generate 11025 sound. here how i get sound from java api AudioFormat format = new AudioFormat(44100.0f, 16 , 1, true, false); // target (...)
11:59
How to livestream a webcam to YouTube with FFmpeg? - pkok Newest 'ffmpeg' Questions - Stack Overflow

I want to send the livestream of my webcam to YouTube. I can follow YouTube's guide up to step 8. "Stream Connection" tells me there is "No data" and the button "Go Live" remains unclickable. A screenshot of this situation can be seen at As encoding software, I was planning on using FFmpeg because it can run from the target platform, a Raspberry Pi with Raspbian. A USB webcam supported by video4linux2 is used. FFmpeg's wiki shows that streaming a file can be done with the following: ffmpeg -re -i input.mkv \\ -c:v libx264 -preset veryfast -maxrate 3000k \\ -bufsize 6000k -pix_fmt (...) -- YouTube\'s guide, FFmpeg\'s wiki
10:39
Effect of AV_CODEC_FLAG2_FAST in decoding H.264 - M.Mahdipour Newest 'ffmpeg' Questions - Stack Overflow

Does anyone know what is the effect of AV_CODEC_FLAG2_FAST flag in libavcodec library (ffmpeg 4.0.2) when is set on AVCodecContext? AVCodecContext* avCodecContext; AVCodec* avCodec; ... avCodec = ...; avCodecContext = avcodec_alloc_context3(avCodec); avCodecContext->flags2 |= AV_CODEC_FLAG2_FAST; ... // start receiving stream and parsing and decoding frames ... As I have tested on an AXIS camera, I cannot see any difference in decoding performance when this flag is set, compared to not using this flag. Any idea, any information (...)
07:36
ffmpeg hangs when run in background - yoosha Newest 'ffmpeg' Questions - Stack Overflow

If I run ffmpeg as follows: ffmpeg -i H264-media-4.264 4.avi It works OK (i.e. 4.avi created OK). However, if I try to run it in background: ffmpeg -i H264-media-4.264 4.avi & it hangs! (and 4.avi never created) Any Idea? Note: The problem is an isolation of of similar problem in python when trying to run it as subprocess and there it hanged as well: ff.py includes ps = subprocess.Popen(ffmpeg_list, stderr=subprocess.STDOUT,stdout = subprocess.PIPE) and running ./ff.py runs OK, ./ff.py & hangs too. System: CentOS 6.6 ffmpeg: 0.10.2 Results from successful run: ffmpeg version (...)
06:55
Sending 2 streams to FFmpeg from nodejs - Sylens Newest 'ffmpeg' Questions - Stack Overflow

I am trying to send 2 ReadableStreams to FFmpeg from nodejs. I have tried using fluent-ffmpeg library to do this, but it only supports sending one stream for processing. Check here My problem is: I have 2 incoming mono audio streams, I want to send them to ffmpeg to create a stereo stream, which I will then send to google's speech to text service, to generate a transcription. I am successfully receiving both the mono streams to the nodejs server. How to utilize FFmpeg to merge them in realtime is still unclear, I could spawn a FFmpeg child process, but I'm not sure how to give 2 (...) -- ReadableStreams, here

17 August

Revisions : saisies http://zone.spip.org/trac/spip-zone/log/_plugins_/saisies

19:41
Revision 117574: tester systématiquement la syntaxe des conditions avant d'essayer de ... - maieulⓐ… Revisions : saisies

tester systématiquement la syntaxe des conditions avant d'essayer de les transformer en js/php + accepter les conditions false / true -- Log

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

14:53
Automating youtube-dl to download videos from a Vlive Channel [on hold] - yrcje Newest 'ffmpeg' Questions - Stack Overflow

I would like to automate youtube-dl to download any new live streams from a Vlive page, as youtube-dl supports vlive downloading, I would like to ask if it's possible for me to use a bat to automate it? As sometimes the replay just gets cut and I'd like to avoid that if possible. I tried looking into phyton as well but I can't find any phyton related things that is related to vlive as most of them are just youtube. Would appreciate any help if possible.
20:58
Audio lag in FFmpeg on Android 360p video capture after 30 minutes - Jagadish Channagiri Newest 'ffmpeg' Questions - Stack Overflow

The Android Samsung S9 and a few other Android devices are used to capture live video. We call FFmpeg after the live video (360p) is captured for encoding. We are encoding for H264 main profile and AAC. The version of different software used: FFmpeg ver 4.0.1, Javac ver. 1.4.2, Android minSdk version 21, and compileSDK version 28. After 30 minutes or so, between the range of 33 to 36 minutes, the audio begins to lag behind the video. I really do not understand why this happens. . Any ideas or suggestions would be highly (...)
17:56
Getting FFProbe Information With Python - Robin Hood Newest 'ffmpeg' Questions - Stack Overflow

I've been attempting to figure this out for forever now (I'm new to programming) and I can't figure it out. I'm attempting to build a script that will test the file, and give me output from which I can get information like "Audio Format" that I can then put into the filename. However, I can't even get the script to return any file info. I've hit a wall at inserting an input file... So at this point I just need help getting it to spit out info based on the argvs I've thrown in. Hopefully I'll be able to figure out how to parse the audio info from that. My attempt that seems to be close: (...)
17:13
How to concatenate two MP4 files using FFmpeg? - Mark L Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to concatenate two mp4 files using ffmpeg. I need this to be an automatic process hence why I chose ffmpeg. I'm converting the two files into .ts files and then concatenating them and then trying to encode that concated .ts file. The files are h264 and aac encoded and I'm hoping to keep the quality the same or as close to original as possible. ffmpeg -i part1.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part1.ts ffmpeg -i part2.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part2.ts cat part1.ts part2.ts > parts.ts ffmpeg -y -i parts.ts -acodec copy -ar 44100 -ab (...)
16:07
exclude specific streams (e.g. teletext) from ffmpeg conversion - leone1522 Newest 'ffmpeg' Questions - Stack Overflow

I want to convert several video files (captured from television) to another format, but I want to remove some specific streams. For example, this is one of my input files: $ ffprobe -hide_banner -i 'Easy Rider.ts' 2>&1|grep Stream Stream #0:0[0x4f6]: Unknown: none ([5][0][0][0] / 0x0005) Stream #0:1[0x4fc]: Unknown: none ([12][0][0][0] / 0x000C) Stream #0:2[0x13f7]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc Stream #0:3[0x13f8](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 192 (...)

Revisions : saisies http://zone.spip.org/trac/spip-zone/log/_plugins_/saisies

16:23
Revision 117572: constructeur de formulaire : verifier la syntaxe des tests ... - maieulⓐ… Revisions : saisies

constructeur de formulaire : verifier la syntaxe des tests d'afficher_si (nicod) -- Log
16:23
Revision 117571: espace de fin de ligne - maieulⓐ… Revisions : saisies

espace de fin de ligne -- Log
16:23
Revision 117570: une fonctione pour vérifier la syntaxe des afficher_si, en general, et ... - maieulⓐ… Revisions : saisies

une fonctione pour vérifier la syntaxe des afficher_si, en general, et pas que d'un point de vue sécurité -- Log
16:22
Revision 117569: phpdoc - maieulⓐ… Revisions : saisies

phpdoc -- Log

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

13:56
mmpeg changing the bitrate and file size of resulting file - Paco Abato Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg within a Python script (using mmpeg-python) in order to change metadata values but the bitrates and file size are also changed in the resulting video (bitrates are 'Velocidad de datos' and 'Velocidad de bits', sorry for non-english GUI): The command I use is the following (removed the metadata part because the result is the same: the bitrate and the file size being changed): import ffmpeg ifile = 'borrar.mp4' ofile = 'res.mp4' ffmpeg.input(ifile).output(ofile).run() How to preserve bitrates and so an aproximate file size. Thanks in (...) --
11:58
FFmpeg C API documentation/tutorial [on hold] - fvisticot Newest 'ffmpeg' Questions - Stack Overflow

I am trying to find documentation to use the FFmpeg C API. It seems that only command line documentation is available. Is there any good documentation/tutorials/links available?
07:24
concat 2 mini audio files and make a loop and add a background music - Johny Sharma Newest 'ffmpeg' Questions - Stack Overflow

I Need to concatenate 2 small audio files with loop and add background music in a single command. I am capable to concatenate two audio files with a background music. My above given code is working. ffmpeg -i 1.mp3 -i 2.mp3 -i background.mp3 -filter_complex "[0:0][1:0]concat=n=2:v=0:a=1,volume=1dB,aformat=fltp, pan=stereo|c0=c0|c1=c0[a0]; [2]volume=0.5dB,aformat=fltp,pan=stereo|c0=c0|c1=c1[a1];[a0][a1]amix=inputs=2:duration=longest,aformat=fltp[a]" -map "[a]" -strict -2 -y output.mp3 but i want to a make a loop of the concatenated files till the end of the background music. background (...)

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

02:27
avformat/matroskadec: Fix seeking - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/matroskadec: Fix seeking matroska_reset_status (a function that is used during seeking (among other things)) used an int for the return value of avio_seek which returns an int64_t. Checking the return value then indicated an error even though the seek was successfull for targets in the range of 2GB-4GB, 6GB-8GB, ... This error implied that the status hasn't been reset and in particular, the old level was still considered to be in force, so that ebml_parse returned errors because the newly parsed elements were of course not contained in the previously active and still wrongly (...)

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

00:47
Pipe FFMPEG MPEG-DASH livestream to AWS S3 - Alexander Newest 'ffmpeg' Questions - Stack Overflow

So I'm currently trying to livestream the rendering of a GPU-heavy video (renders about 1fps), encode it to a 30fps MPEG-DASH livestream and output this to AWS S3 so Shaka Player can display the live rendering. The first issue is that the livestream keeps looping, it doesn't stop after the rendering for loop is done. I use a python script to pipe the output of the rendering to FFMPEG, and pipe the output of FFMPEG to the aws s3 cli like this: p1 = Popen(['ffmpeg', '-y', '-hwaccel', 'cuvid', '-f', 'image2pipe', '-r', '24', '-i', '-', '-c:v', 'h264_nvenc', '-b:v', '5M', '-f', 'dash', (...)

16 August

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

21:08
Trouble downloading files in Dropbox Python API v2 - jack Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to download .mov files from Dropbox, manipulate them with ffmpeg, and upload back to Dropbox, but I'm getting an error when I use the files_download method. I'm able to read files from Dropbox without any problem using dbx.files_list_folder When trying to download files, I've used the following: import dropbox access_token = 'MY TOKEN' dbx = dropbox.Dropbox(access_token) metadata,file=dbx.files_download('path to .mov file') and I get the error SSLError: HTTPSConnectionPool(host='content.dropboxapi.com', port=443): Max retries exceeded with url: /2/files/download (Caused by (...)
18:48
Is there a way to extract subtitles using ffmpeg with specific encoding? - NeeFuu Newest 'ffmpeg' Questions - Stack Overflow

I am batch extracting multiple subtitles from video files. However, some of them are in UTF-8/Chinese characters. Extracting subtitle in .ass format using ffmpeg seems to skip all special characters. I was looking for some soluton and I found only sub_charenc filter which seems to not work in this case. I also found this this that look similar to my question but there is still no solution from ffmpeg side. ffmpeg -i video.mkv -map 0:s:0 -sub_charenc UTF-8 subtitle.ass What I want to achieve is subtitle.ass file written in UTF-8 encoding so all special characters can (...)
18:13
Injecting Metadata into an .mp4 file - TrueCP5 Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a library that injects metadata into a .mp4 file to allow the video to be displayed correctly as a 360 video. The input file is a standard .mp4 file in the equirectangular format. I know what metadata needs to be injected I just do not know how to inject it. I spent some time looking around for libraries that can do this but could only find ones for extracting metadata not injecting/embedding/writing it. The alternative I found was to use Spatial Media as a command line application to inject the metadata more easily. The problem is I know zero python whatsoever so I'm (...) -- Spatial Media, Spatial Media Tool
17:54
How to remove "wrting library" from an MP3 file using ffmpeg? - aveceux Newest 'ffmpeg' Questions - Stack Overflow

I tried to remove the "writing library" entry from some of my mp3 files with ffmpeg, and this is the command I used: ffmpeg -i input.mp3 -map_metadata -1 -c copy output.mp3 The command removed all the other tags, but the "writing library" still remained intact. I've also tried other mp3 tag editing tools, but none of them did the job. Here's the mediainfo of an example mp3 file: Format : MPEG Audio File size : 32.1 MiB Duration : 1 h 9 min Overall bit rate mode : Variable Overall bit rate : 64.0 kb/s Writing library : LAMEUUULAME3.91 Cover : Yes Cover MIME : image/jpeg Audio Format : (...)
16:56
MSVC fatal error LNK1120: 1 unresolved externals with FFMPEG libs - Jared Newest 'ffmpeg' Questions - Stack Overflow

I am trying to utilize the ffmpeg libraries in a program of my own and am having trouble linking them. Specifically, In my a basic program I am receiving fatal error LNK1120: 1 unresolved externals errors. The program is: #include #include int main() std::cout I downloaded prebuild libraries from https://ffmpeg.zeranoe.com/builds/, specifically the Windows x64 dev package which includes the .def/.lib as well as .dll files. I originally tried (and intend to ultimately use) cmake to generate the MSVC sln files. The cmake file is: cmake_minimum_required(VERSION 3.5) project(ffmpeg_jni) # (...) -- https://ffmpeg.zeranoe.com/builds/
16:40
FFMPEG Video from images to mp4 in nvidia GPU - M.y Newest 'ffmpeg' Questions - Stack Overflow

I am trying to encode a h264 .mp4 video created from .jpg images using a 1070ti nvidia cuda power, having a a crossfade transition between each image. I am able to render the video in GPU using the flags -c:v h264_nvenc, I see a short peak in the GPU encoding, but with a long period of computer CPU hight load, I guess preparing the transitioning images. But the image preparation it happens on cpu/ram due the -filter_complex and is quite slow. This works: ffmpeg.exe, -y, -loop, 1, -t, 2.5, -i, 1565957420594_labeled.jpg, -loop, 1, -t, 2.5, -i, 1565957453659_labeled.jpg, -loop, 1, -t, 2.5, (...)
15:34
Video from images to mp4 in nvidia GPU - M.y Newest 'ffmpeg' Questions - Stack Overflow

I am trying to encode a h264 .mp4 video created from .jpg images using a 1070ti nvidia cuda power, having a a crossfade transition between each image. I am able to render the video in GPU using the flags -c:v h264_nvenc, I see a short peak in the GPU encoding, but with a long period of computer CPU hight load, I guess preparing the transitioning images. But the image preparation it happens on cpu/ram due the -filter_complex and is quite slow. This works: ffmpeg.exe, -y, -loop, 1, -t, 2.5, -i, 1565957420594_labeled.jpg, -loop, 1, -t, 2.5, -i, 1565957453659_labeled.jpg, -loop, 1, -t, 2.5, (...)
14:30
Why is the audio recording on Chrome missing duration - Ivan Sedelkin Newest 'ffmpeg' Questions - Stack Overflow

I'm sending some user created audio to a server which later passes it to googles speech to text api for transcription. Everything works perfectly on firefox but when I try it on Chrome it doesn't work. I then installed FFmpeg to check if the metadata somehow changed for the file on chrome and noticed that the duration on the file is tagged "N/A". This does not happen on firefox. This is the audio recorded from Chrome Input #0, matroska,webm, from 'PATH_TO_FILE': Metadata: encoder : Chrome Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0(eng): Audio: opus, 48000 Hz, mono, fltp (...)
12:54
How does Rust work with process arguments? - SoptikHa Newest 'ffmpeg' Questions - Stack Overflow

I'm really confused about Rust processes. I'm trying to call something like this: ffmpeg -i path/to/test-video.webm -ab 160k -ac 2 -vn -f mp3 - This should extract sound out of video and send it to stdout. So I've done this: let sound: std::process::Output = Command::new("ffmpeg") .arg(format!("-i ", args.input.to_str().unwrap())) .arg("-ab 160k") .arg("-ac 2") .arg("-vn") .arg("-f mp3") .arg("-") .stdout(Stdio::piped()) .stdin(Stdio::inherit()) .stderr(Stdio::inherit()) .output() .unwrap(); But for some reason, this doesn't work. It prints this to stderr: Unrecognized option 'i (...)
12:07
Format ffmpeg command to extract the full klv for an mpg/ts file - Andrew Marquez Newest 'ffmpeg' Questions - Stack Overflow

I am extracting the KLV data from an mpg file using klvdata and ffmpeg. Following the readme, I have downloaded the sample "Day Flight.mpg" video file that contains KLV data. Running the quick start command works (I get the exact same result as the readme example for the first 6 frames.) However, for the life of me I don't know how I can extract the KLV data for the entire video file. As an experiment, I tried creating the KLV data file from an offset start: ffmpeg -ss 5 -i Day\\ Flight.mpg -map data-re -codec copy -f data - > out.klv and when I run it through my code with different (...) -- KLV, klvdata, readme example, klvdata project page
11:27
Using libav to encode RGBA frames into MP4 but the output is a mess - Cu2S Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to decoding a video into RGB frames, and then run some algorithm on the frame, finally reencoding into a video. But the output video is completely a mess: I wrote a minimal example to illustrate my code. First, I read some informations from some source video: AVFormatContext* inputFormatCtx = nullptr; int ret = avformat_open_input(&inputFormatCtx, inputParamsVideo, nullptr, nullptr); assert(ret >= 0); ret = avformat_find_stream_info(inputFormatCtx, NULL); av_dump_format(inputFormatCtx, 0, inputParamsVideo, 0); assert(ret >= 0); AVStream* inputVideoStream = nullptr; for (...) --
10:45
How to make RTSP streaming with jpeg source? - chain choonoi Newest 'ffmpeg' Questions - Stack Overflow

I work with a video application which can only use RTSP as an input source. The sources are from CCTVs which connect with VMS which provides jpeg sequence. I want to make RTSP server which uses jpeg as a source. [CCTV]-->[VMS]-->[RTSPServer]-->[VideoApp] I use ffmpeg same as ffmpeg continuously stream refreshing image to rtmp but it uses a file for input.it slowly when connecting to 40 cameras. How I can use ffmpeg without reading jpeg file for sources?(form memory stream or (...)
09:38
What's the point of passing address of pointer to function that needs pointer to pointer? - Guerlando OCs Newest 'ffmpeg' Questions - Stack Overflow

I'm reading an example of ffmpeg decoding and it has the address of a pointer being passed to a function: static AVBufferRef *hw_device_ctx = NULL; if ((err = av_hwdevice_ctx_create(&hw_device_ctx, type, NULL, NULL, 0)) What's the point of passing the address of a pointer as an argument? I understand that when we pass the pointer itself, if the pointer has address 0x123456, then the function is going to be able to modify what's the object that is in this address. But when I pass the address of a pointer, I'm passing the address of where this pointer number is allocated? If I (...) -- example of ffmpeg decoding
08:09
How to convert udp mpeg ts stream to http stream? - Mohammad Yamini Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to stream a live video on a website and I already have a udp mpeg-ts. I cannot show this stream on html so I wanna convert this stream to http on server then send it to clients. how can I do that using ffmpeg? any other solution accepted too. thank you
06:10
Generate 7.1 surround sound file and simultaneously play it on 8 speakers? [on hold] - Anthony Newest 'ffmpeg' Questions - Stack Overflow

Is there any software can do something like "receive 8 different audio sources and simultaneously play them on 7.1 surround sound speakers"? Right now, I just use the ffmpeg to combine 8 audio to 1 audio file, but this is a little bit delay and I don't prefer to generate the file.
04:42
How to convert my 16:9 size MKV video to 4:3 size AVI video file [on hold] - Bimal Rekhadiya Newest 'ffmpeg' Questions - Stack Overflow

I have a video in MKV format and it's size is 720x304 (16:9 ratio) size video. I want to convert it to AVI format (using xvid video codec). The output file size should be 480x360 (4:3 ratio) and also want to keep the original (16:9) ratio so it should be cinemascope (black areas at top and bottom). I am on Ubuntu Linux so I can use mencoder, avconv(ffmpeg) or any tool that work on Linux. I tried this command: avconv -i sample.mkv -vcodec libxvid -r 25 -b 1200 -aspect 4:3 -q 1 t.avi But the problem is that the video is stretched to 4:3 and I want to keep original video's ratio and want (...)

Piwik http://piwik.org/

02:46
What is Google Analytics data sampling and what’s so bad about it? - Joselyn Khor Piwik

What is Google Analytics data sampling, and what’s so bad about it? Google (2019) explains what data sampling is: “In data analysis, sampling is the practice of analysing a subset of all data in order to uncover the meaningful information in the larger data set.”[1] This is basically saying instead of analysing all of the data, there’s a threshold on how much data is analysed and any data after that will be an assumption based on patterns.Google’s (2019) data sampling thresholds: Ad-hoc queries of your data are subject to the following general thresholds for sampling: [Google] Analytics (...) -- Analytics Tips, Development

15 August

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

21:00
avcodec/anm: Check input size for a frame with just a stop code - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/anm: Check input size for a frame with just a stop code Fixes: Timeout (11sec -> 6sec) Fixes: 16344/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ANM_fuzzer-5673032000995328 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Peter Ross <prossⓐxvid.org> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/anm.c

Xiph.org - flac.git/summary http://git.xiph.org/?p=flac.git;a=summary

12:27
Fix build on FreeBSD PowerPC - pkubaj Xiph.org - flac.git/summary

Fix build on FreeBSD PowerPC Used the elf_aux_info function on FreeBSD and clarify that users of other systems need to implement reading from AT_HWCAP2. [DH] src/libFLAC/cpu.c
17:53
Fix metaflac under ctest. - Ralph Giles Xiph.org - flac.git/summary

Fix metaflac under ctest. The 1.3.3 release didn't update the version number in the cmake build. It's too late to fix the release, but bringing the version number into sync allows the metaflac test which verifies the encoder's embedded version number to pass, giving us proper test feedback on other changes to the development tree. [DH] CMakeLists.txt

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

22:00
Command-line streaming webcam with audio from Ubuntu server in WebM format - mjtb Newest 'ffmpeg' Questions - Stack Overflow

I am trying to stream video and audio from my webcam connected to my headless Ubuntu server (running Maverick 10.10). I want to be able to stream in WebM format (VP8 video + OGG). Bandwidth is limited, and so the stream must be below 1Mbps. I have tried using FFmpeg. I am able to record WebM video from the webcam with the following: ffmpeg -s 640x360 \\ -f video4linux2 -i /dev/video0 -isync -vcodec libvpx -vb 768000 -r 10 -vsync 1 \\ -f alsa -ac 1 -i hw:1,0 -acodec libvorbis -ab 32000 -ar 11025 \\ -f webm /var/www/telemed/test.webm However despite experimenting with all manner of vsync and (...)
21:05
ffmpeg: UDP to RTMP stream - issues with PES/out of range/corrupted macroblock - MZL Newest 'ffmpeg' Questions - Stack Overflow

I´m trying to convert a UDP multicast transportstream video to a RTMP video stream with ffmpeg. The stream is generated with a Teracue ENC-300 hardware encoder. The encoder sends the stream as TS/UDP packets to the multicast IP 239.252.20.100:4444. ffmpeg can convert the stream, but only at a really low bitrate and/or with a lot of errors. My ffmpeg command looks as follows: ffmpeg -re -i udp://ⓐ239.252.20.100:4444?buffer_size=32000k -b:v 900k -maxrate 1000k -bufsize 32000k -f flv "rtmp://127.0.0.1/live/live1" -loglevel debug I´ve already tried some easyer code: ffmpeg -re -i (...)
20:06
FFmpeg progress track visual C++ - jAckOdE Newest 'ffmpeg' Questions - Stack Overflow

In my main process, i create a ffmpeg child process using CreateProcess(...). I need to track the status of converting progress to update a progress bar. To do it, I read text from ffmpeg output and extract progress status from it. I make a sample programm like this: HANDLE rPipe, wPipe; CreatePipe(&rPipe,&wPipe,&secattr,0); STARTUPINFO sInfo; ZeroMemory(&sInfo,sizeof(sInfo)); PROCESS_INFORMATION pInfo; ZeroMemory(&pInfo,sizeof(pInfo)); sInfo.cb=sizeof(sInfo); sInfo.dwFlags=STARTF_USESTDHANDLES; sInfo.hStdInput=NULL; sInfo.hStdOutput=wPipe; sInfo.hStdError=wPipe; // (...)
19:21
Audio lag in Ffmpeg on Android 360P vide capture after 30 minutes - Jagadish Channagiri Newest 'ffmpeg' Questions - Stack Overflow

We are currently run video capture on Android Samsung S9 and few other Android devices, FFmpeg version 4.0.1, Javacversion 1.4.2, Android minSdkVersion 21, and compileSdkVersion 28. After 30 minutes or so, between the range 33 - 36 minutes, the audio lags video. I really do not understand why this happens. Any ideas or suggestions would be highly appreciated.
18:05
FFMPEG 'Fontconfig error: Cannot load default config file' error Windows - Merel Newest 'ffmpeg' Questions - Stack Overflow

I am trying to make a short video in FFMPEG, where a word stays on screen for the duration of the video (0.5s). My FFMPEG code looks like this: ffmpeg -f lavfi -i color=c=white:s=320x240:d=0.5 -vf "drawtext=fontfile= ‘c\\:\\Windows\\fonts\\calibri.ttf':fontsize=18: fontcolor=black:x=(w-text_w)/2:y=(h-text_h)/2:text='word'" output.mp4 However, I keep getting the following error (see below for full output): Fontconfig error: Cannot load default config file [Parsed_drawtext_0 ⓐ 000001c2918cef00] Using "C:/Windows/fonts/mingliub.ttc" I figured it had something to do with the path to the font (...)
17:30
Decoding MediaRecorder produced webm stream - sgmg Newest 'ffmpeg' Questions - Stack Overflow

I am trying to decode a video stream from the browser using the ffmpeg API. The stream is produced by the webcam and recorded with MediaRecorder as webm format. What I ultimately need is a vector of opencv cv::Mat objects for further processing. I have written a C++ webserver using the uWebsocket library. The video stream is sent via websocket from the browser to the server once per second. On the server, I append the received data to my custom buffer and decode it with the ffmpeg API. If I just save the data on the disk and later I play it with a media player, it works fine. So, (...)
16:22
Multiple video streaming through ffmpeg - Baka-Maru Lama Newest 'ffmpeg' Questions - Stack Overflow

I'm new to to ffmpeg although i've managed to do live streams but what i want to do is live feed from multiple cameras eg camera1 and camera 2... and so on show dash video(dashing part done.) but i want to show user or client feed from camera 1 or camera2 switchable case.scenario to switch cameras feed whenever camera 1/2 disconnect or lost connection.
16:13
How to raw TS packets off a file/url -- Without decoding - Znura Newest 'ffmpeg' Questions - Stack Overflow

New to ffmpeg and playing around that to understand better. I'm trying to use ffmpeg code base to get TS packets from a HLS Streaming server. I don't need any decoding as I just have to store the TS packets to be processed later. First I built a minimal FFMPEG as outlined in https://zeranoe.com/forum/viewtopic.php?f=5&t=7426. No decoders and only hls and mpegts demuxers. Then using the following code to receive the frames. While inspecting it doesn't seem to be MPEG-TS packets while looking into buffers thru GDB. Attaching the code here.. Two Questions: Shouldn't the av_recv_frame (...) -- https://zeranoe.com/forum/viewtopic.php?f=5&t=7426

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

14:27
aarch64/opusdsp: do not clobber register v8 - Lynne git.videolan.org Git - ffmpeg.git/rss log

aarch64/opusdsp: do not clobber register v8 A part of v8-v15 needs to be preserved across calls. [DH] libavcodec/aarch64/opusdsp_neon.S

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

14:46
Testcafe cucumber reporter video recording - harshvardhan Newest 'ffmpeg' Questions - Stack Overflow

Steps to record test video in Testcafe is nicely explained here. I am using cucumber to publish the reports. Once the report is published, a link to screenshot is provided at errored scenarios. But unable to find a way to provide a link to the video on those errored scenarios. -- here, cucumber
14:24
On concatinating two videos in FFmpeg, the output video is far longer than expected - Ngo Van Phuc Newest 'ffmpeg' Questions - Stack Overflow

I want to ask about FFmpeg. Video A (time: 00:31:51 - 1280x720) Video B (time: 00:00:22 - 1280x720) output video: (time: 01:20:38) The code I use: ffmpeg -f concat -i file-list.txt -c copy outputfile.mp4 I hear people say, need to encode videos, How to encode video? please help me.
06:23
Powershell script for ffmpeg mkv-->mp4 remuxing? - crioxide Newest 'ffmpeg' Questions - Stack Overflow

I am interested in writing a Powershell script that calls ffmpeg to remux a series of videos from mkv to mp4 and converts subtitle track 1 of all these files to hard subs. I have never used these CLI programs like this before so this is difficult for me to figure out (I've had to resort to doing this task this way after getting frustrated with all the half-assed GUI solutions out there that can't do the job). Can I get some help please? AND can someone enlighten me how I can learn more about these pieces of software so I don't have to go begging for solutions online (...) -- converts subtitle track 1 of all these files to hard subs
05:44
Cannot find installation of real FFmpeg (which comes with ffprobe) - Asm Goni Newest 'ffmpeg' Questions - Stack Overflow

I was trying to fit a generator into a model and I got this error: AssertionError: Cannot find installation of real FFmpeg (which comes with ffprobe). I have looked over many of the solutions on GitHub and other questions on Stack Overflow but none of them worked for me. Here is one of the commands I ran: sudo add-apt-repository ppa:mc3man/trusty-media sudo apt-get update sudo apt-get install ffmpeg sudo apt-get install frei0r-plugins pip list also indicates the presence of ffmpeg-1.4 In addition, I tried force reinstalling and updating ffmpeg just in case any dependencies were not (...)
04:47
How to fix this script - recursive ffmpeg encoding - Gabriel Luz Newest 'ffmpeg' Questions - Stack Overflow

I've downloaded some videos from my course and I think they are too big. I need to reencode them to something better and smaller. The problem is I made the script but it saves the file in the first folder. I want the output files inside the same folder as the input files. For example: Folder 1 - script.sh Folder 2 - file1.mp4 - file1.new Folder 3 - file2.mp4 - file2.new I've tried using the for loop only, and it was working actually but I couldn't encode the files recursively. This wouldn't work. Using find solved the problem, but now the output files are all in the same directory, which (...)

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

03:01
avcodec/libdav1d: allow setting frame size limit in pixels - James Almer git.videolan.org Git - ffmpeg.git/rss log

avcodec/libdav1d: allow setting frame size limit in pixels Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] configure [DH] libavcodec/libdav1d.c

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

01:57
Error installing ffmpeg on ubuntu: opus not found using pkg-config - fangda Newest 'ffmpeg' Questions - Stack Overflow

When I try to install ffmpeg on my ubuntu 14.10 machine, I keep getting this: ERROR: opus not found using pkg-config at this step: PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \\ --prefix="$HOME/ffmpeg_build" \\ --extra-cflags="-I$HOME/ffmpeg_build/include" \\ --extra-ldflags="-L$HOME/ffmpeg_build/lib" \\ --bindir="$HOME/bin" \\ --enable-gpl \\ --enable-libass \\ --enable-libfdk-aac \\ --enable-libfreetype \\ --enable-libmp3lame \\ --enable-libopus \\ --enable-libtheora \\ --enable-libvorbis \\ --enable-libvpx \\ --enable-libx264 \\ --enable-nonfree I've (...) -- step
01:56
10bit DPX to DNXHR_444 with FFmpeg causing colour shift - Josh Northeast Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to build a python application to convert a 10bit DPX sequence to a 4k DNXHR_444 MOV with a Arri to Rec709 lut, just as I would in Davcincci resolve. ffmpeg -f image2 -framerate 24 -pattern_type glob -i INPUT.dpx -c:v dnxhd -profile:v dnxhr_444 -vf lut3d=ArriAlexa_LogCtoRec709_Resolve.cube,colormatrix=bt601:bt709 -pix_fmt yuv444p10le -c:a pcm_s16le -y -timecode 00:00:41:16 OUTPUT.mov When comparing the output to the dpx in resolve with the lut on it, there is a slight colour shift making everything slightly more red. Even when i take the lut out of the ffmpeg code, there is (...) -- https://drive.google.com/drive/folders/1j2Qq1sV5ZJJsMYe3DOFOV0dnQ3VIotcw

14 August

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

12:25
Do I need to open source my application If I use x264 through Android MediaCodec? [on hold] - sanjay Newest 'x264' Questions - Stack Overflow

I want to encode some animation and save them as video. I want to use x264 Lib. But x264 license is GPL or commercial so I can not link with it directly without purchasing license. Do I need to opensource my app, If I use Android MediaCodec (https://developer.android.com/reference/android/media/MediaCodec) to encode which internally uses x264 ? -- https://developer.android.com/reference/android/media/MediaCodec

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

20:58
After a while of being idle, my bot, hosted on CentOS 7, can no longer find ffmpeg and requires a restart - Liam McMillen-Meyers Newest 'ffmpeg' Questions - Stack Overflow

So I have a discord bot running with discord.js on a CentOS 7 machine. After a while (I'm not exactly sure how long) it will start throwing errors when I try to play a song, saying it can't find ffmpeg, except that ffmpeg is installed. After I quickly restart the bot it works fine again. I genuinely have no idea what causes this, I have a little experience with CentOS but I'm by no means an experienced user, is it something I did when it installed? I have tried searching for answers online but I can't find anything Error: FFMPEG not found at Function.selectFfmpegCommand (...)

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

18:55
Révision 24366: Éviter une notice PHP sur certains calculs de vignette, notamment à l’installatio... - Matthieu Marcillaud Revisions : SPIP

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

18:47
Changing gamma_r & g in video filter eq (ffmpeg) causes decrease in vmaf score? - Billo Binder Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg video filter -vf eq=contrast=1.1:brightness=0:saturation=1:gamma=1:gamma_r=0.99:gamma_g=0.98:gamma_b=1.1 to reduce red & green colors in a video. But this causes reduction in vmaf scores but increase in ssim scores and I don't understand why? Original Scores : aggregateVMAF="98.0557" aggregateSSIM="0.977389" aggregateMS_SSIM="0.982315" poolMethod="mean". Modified scores : aggregateVMAF="87.0124" aggregateSSIM="0.991839" aggregateMS_SSIM="0.984841" poolMethod="mean". Also eq=contrast=1.1 causes boost in vmaf score. How do i interpret this...i mean can i ignore (...)

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

17:03
Révision 24365: centraliser les tests identiques c'est plus simple a mainteanir - cerdic - Revisions : SPIP

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

15:40
Reverse and areverse crash the computer - Alex Newest 'ffmpeg' Questions - Stack Overflow

I am using this command: ffmpeg -y -ss 00:03:52.612 -i "H:\\DCIM\\100GOPRO\\GOPR3258.MP4" -r 60 -t 00:00:12.140 -vf reverse -af afade=t=in:ss=0:d=1,afade=t=out:st='00\\:00\\:11.140':d=1,areverse 6.mp4 It increases the memory consumption of the computer to a point of collapse. Putting it like ffmpeg -y -ss 00:03:52.612 -i "H:\\DCIM\\100GOPRO\\GOPR3258.MP4" -r 60 -t 00:00:12.140 -af afade=t=in:ss=0:d=1,afade=t=out:st='00\\:00\\:11.140':d=1 6.mp4 Works without a problem. Therefore, the issue is in the -vf reverse and -af reverse. The output is ffmpeg version N-94543-g8fcc5d963e Copyright (c) (...)
15:39
Making a timelapse by drag and drop - A rebuild of an old script using ImageMagick - cursor_major Newest 'ffmpeg' Questions - Stack Overflow

I have written an apple script previously to automate a task I do in my work many times. I shoot Raw + JPG in camera, copy to hard drive. I then drag named and dated folder eg. "2019_08_14_CAM_A_CARD_01" on to an automator app and it divides the files in to folders "NEF" and "JPG" respectively. I then drag the appropriate "JPG" folder onto my Timelapse app and it runs the image sequence process in QT7 and then saves the file with the parent folder name in the grandparent folder. This keeps things super organised for when I want to re link to the original RAW files. [code below] It is (...)
17:14
The video is very long when I pair them - Ngo Van Phuc Newest 'ffmpeg' Questions - Stack Overflow

First of all, I'm sorry for not being good at English. I want to ask about Ffmpeg: - Video A (time: 00:31:51 - 1280x720) connect with Video B (time: 00:00:22 - 1270x720) output video: (time: 01:20:38) The code I use(Ffmpeg): "ffmpeg -f concat -i file-list.txt -c copy outputfile.mp4" Please help me, thank you.

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

16:10
Révision 24364: Nettoyage de code : on a plus besoin de cette lib qui fait le calcul de sha256, o... - cerdic - Revisions : SPIP

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

14:37
How to access video frames from external process? - gaamaa Newest 'ffmpeg' Questions - Stack Overflow

Windows 32 bit application memory limit is around 2gb approximately. I need to play 4 to 8 HD video files or live camera graphs. Which is not possible by a single 32 bit application. So I would like to play each graph in separate 32 bit application and access those video frames from my main application. In this case I could manage my need. Could some experts give me some clue to do this if c++ ? Is there any ready solution to achieve this ? gaamaa

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

13:51
Why is x264 not found? - user11903678 Newest 'libx264' Questions - Stack Overflow

I want to enable in libav the h264 encoder so I downloaded the library libx264 and installed it statically. However the makefile generated in /lib and /include the .so, .h files for libx264, there is no x264.so file (only c files and header). When I pass the path to the configuration file for Libav it returns the error: ERROR: x264 not found If you think configure made a mistake, make sure you are using the latest version from Git. If the latest version fails, report the problem to the libav-toolsⓐlibav.org mailing list or IRC #libav on irc.freenode.net. Include the log file (...)

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

12:59
Hot to access video frames from external process? - gaamaa Newest 'ffmpeg' Questions - Stack Overflow

Windows 32 bit application memory limit is around 2gb approximately. I need to play 4 to 8 HD video files or live camera graphs. Which is not possible by a single 32 bit application. So I would like to play each graph in separate 32 bit application and access those video frames from my main application. In this case I could manage my need. Could some experts give me some clue to do this if c++ ? Is there any ready solution to achieve this ? gaamaa

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

12:16
How to find the upper limit of hardware decoder instances for Google Pixel 2 phone - MSD Paul Newest 'x264' Questions - Stack Overflow

Can anyone please tell me how to check how many hardware decoder instances (OMX.qcom.video.decoder.avc)can be created in my android phone (i.e. Google Pixel 2) for decoding H.264 video stream? How to check this configuration?

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

10:32
Making new struct point to data from old struct without old struct deleting it - Guerlando OCs Newest 'ffmpeg' Questions - Stack Overflow

Here's how I decode videos in ffmpeg: AVFrame* avFrame; avFrame = av_frame_alloc(); int receiveFrameResult = avcodec_receive_frame(avCodecContext, avFrame); Now my AVFrame struct has video data in its uint8_t * data field. I want to create my own struct myNewStruct which holds the data that AVFrame has in uint8_t * data[]. The problem is that I don't want to waste CPU time by copying value by value from avFrame->data to myNewStruct->buffer. I also can't simply copy the data like this: myNewStruct.buffer[i] = new uint8_t; myNewStruct.buffer[i] = avFrame->data[i]; because when avFrame (...)
09:22
Launch Symfony 4 command from controller works on dev but not in prod environment - JoakDA Newest 'ffmpeg' Questions - Stack Overflow

When an application loads, I make 2 AJAX request to start 2 proccess needed for showing a RTSP video streaming on the website. It is working great in DEV environment but making some tests in PROD, it only works if the page is loaded on the server webbrowser (same host where the application is installed). If I use an external browser installed on another machine, it doesn't launch the video. If I use an external browser installed on another machine, it doesn't launch the video. /** * Start transcoding video. * ⓐparam Request $request * ⓐreturn Response * (...) -- JSMpeg – MPEG1 Video & MP2 Audio Decoder in JavaScript
06:39
How not to lose rtmp onFI timecodes on ffmpeg transcode? - Vitaliy Lozoviy Newest 'ffmpeg' Questions - Stack Overflow

I would like to transcode my live rtmp stream with resize to rtmp and mp4 smaller size and bitrate. So I do like ffmpeg -i rtmp://my.input/stream -vcodec libx264 -s 640x480 -acodec copy -f flv rtmp://output/stream or the same with mp4. To sync my application with the stream I use onFi event in rtmp stream. But after transcode the resulting flv doesn't contain it. mp4 also doesn't have any timecode data. Is it possible to somehow save this data: to data track, subtitle track or any other way? Or at least to leave it as is (as onFI events) inside the output (...)
04:24
Python, How can I get frames with a stride, such as 500, quickly? - dwqy11 Newest 'ffmpeg' Questions - Stack Overflow

I'd like to get a lot of frames from videos, like movies, and set the stride as 500 or much more. I have tried imageio as following, but it's slow. Is there any methods quicker? filename='./alita.mkv' vid=imageio.get_reader(filename, 'ffmpeg') cnt = 0 for i, im in enumerate(vid): if i % 500 == 0: cnt += 1 cv2.imwrite('./alita/alita_.jpg'.format(cnt), im) BTW, what's the type of the vid get by imageio.get_reader(), it is not a list?

13 August

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

03:39
avfilter/f_select: yuv will use Y plane only for scenecut detect - Limin Wang git.videolan.org Git - ffmpeg.git/rss log

avfilter/f_select: yuv will use Y plane only for scenecut detect At the moment scene change detection score uses all planes to detect scene changes. In this regard this is similar how the frozen frames detection works. However, in classic encoding scene change detection typically only uses the Y plane. We might get more resonable scores for scene change if we also use only the Y plane for calculating the score if the pixel format is YUV. Although this will require additional work once packed YUV formats are added, because for the moment the generic scene sad score calculation has no way (...)
03:55
libavdevice: Update the class name as uniform style - Jun Zhao git.videolan.org Git - ffmpeg.git/rss log

libavdevice: Update the class name as uniform style Update the class name to uniform indev/outdev style. Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Jun Zhao <barryjzhaoⓐtencent.com> [DH] libavdevice/alsa_dec.c [DH] libavdevice/alsa_enc.c [DH] libavdevice/avfoundation.m [DH] libavdevice/bktr.c [DH] libavdevice/caca.c [DH] libavdevice/decklink_dec_c.c [DH] libavdevice/decklink_enc_c.c [DH] libavdevice/openal-dec.c [DH] libavdevice/oss_dec.c [DH] libavdevice/oss_enc.c [DH] libavdevice/pulse_audio_dec.c [DH] (...)
13:13
avutil/mips: remove redundant code in TRANSPOSE16x8_UB_UB. - Shiyou Yin git.videolan.org Git - ffmpeg.git/rss log

avutil/mips: remove redundant code in TRANSPOSE16x8_UB_UB. Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavutil/mips/generic_macros_msa.h
04:47
avformat/mux: Use av_packet_rescale_ts - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/mux: Use av_packet_rescale_ts ff_write_chained essentially duplicated the functionality of av_packet_rescale_ts. This has been changed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/mux.c
04:47
avformat/mux: Use const AVPacket * in compare functions - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avformat/mux: Use const AVPacket * in compare functions There is no reason for these functions to modify the given packets at all. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavformat/audiointerleave.c [DH] libavformat/audiointerleave.h [DH] libavformat/gxfenc.c [DH] libavformat/internal.h [DH] libavformat/mux.c [DH] (...)
23:05
ffplay: properly detect all window size changes - Marton Balint git.videolan.org Git - ffmpeg.git/rss log

ffplay: properly detect all window size changes SDL_WINDOWEVENT_SIZE_CHANGED should be used instead of SDL_WINDOWEVENT_RESIZED because SDL_WINDOWEVENT_RESIZED is only emitted if the resize happened due to an external event. Fixes ticket #8072. Additional references: https://bugzilla.libsdl.org/show_bug.cgi?id=4760 https://wiki.libsdl.org/SDL_WindowEventID Signed-off-by: Marton Balint <cusⓐpasswd.hu> [DH] fftools/ffplay.c

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

21:40
How to extract good quality frames from a video and save them without compression? - Albert Newest 'ffmpeg' Questions - Stack Overflow

How can I use ffmpeg and only extract the frames that does not have artifacts (e.g. compression artifacts) from a video and save them with good quality in jpeg format .
19:36
Adding Mediainfo into Videos - yrcje Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to add/preserve these datas while recording/editing .TS footage, (datas will be shown below), I'm using VideoReDo TVSuite5 to edit these .ts/.tp files without losing these datas, as from what I know, VideoReDo software automatically removes these miscellaneous data from the stream, I'm trying to preserve it while editing, or adding it back after editing, is there any way to do this? Not much as I can't really find any documentation on Menu info editing online. From what I can see so far, these data can only be obtained if the source itself is from a Native Internet TV Box. But (...) -- Mediainfo
17:23
FFmpeg, encode once and stream to multiple platforms [on hold] - abhishek Newest 'ffmpeg' Questions - Stack Overflow

I have a file named output.mp4, I want to encode it once and stream it to multiple platforms (like twitch and Youtube), how can I do it I am trying ffmpeg -re -stream_loop -1 -i output.mp4 -crf 25 -c:v libx264 -force_key_frames expr:gte(t,n_forced*3) -preset superfast -maxrate 4000000 -bufsize 8000000 -acodec aac -b:a 327680 -f flv youtube_rtmp_key -acodec aac -b:a 327680 -f flv twitch_rtmp_key but it only streams on youtube and not twitch.
17:03
Why does shell_exec into variable using PHP not work? [on hold] - omega1 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to run this but the variable $new is empty when I run it. When I run the ffmpeg command via command line it gives me the desired output, in fact when I run it in php I see the output from ffmpeg which I'm expecting to be put in the $new variable, but it's empty. Can anyone help me with the reason? Thanks.
18:25
FFmpeg add proxy to request - P1NG2WIN Newest 'ffmpeg' Questions - Stack Overflow

Does FFmpeg support the ability to add a proxy to a request? On the Internet, I found that there is the -http_proxy option, but when I tried to use it by typing ffmpeg -http_proxy=http://ip:port/ in terminal, I received an Option not found error
16:34
How to Fix Problem Drawer Text and Join with FFmpeg - Marcos QP Newest 'ffmpeg' Questions - Stack Overflow

I have two short videos with good state (input1.mp4, input2.mp4). I use ffmpeg to edit videos. Part 1 I combine two videos, it works correctly Part 2 I draw text on input1.mp4, result output1.mp4, it works correctly. I join two videos (output1.mp4, input2.mp4), its join success. But result video is corrupt. I use these comands ffmpeg Combine Videos ffmpeg -y -f concat -safe 0 -i list.txt -c copy merged.mp4 Draw Text on Video ffmpeg -y -i input1.mp4 -vf "drawtext=fontfile=/Windows/fonts/arialbd.ttf: text='Some Text': fontcolor=white: fontsize=50: box=1: boxcolor=blackⓐ0.5: (...)

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

14:28
Anomalie #4370 (Nouveau): Articles refusés invisibles pour les rédacteurs alors que les brèves re... - Vincent ROBERT Revisions : SPIP

SPIP 3.2.4 [24285] Faux bug¶ Je refuse mon propre article, il disparaît de sa rubrique. La documentation officielle ( https://www.spip.net/aide/?aide=artstatut ) annonce : " Un article « refusé » n’est plus visible que par son auteur et par les administrateurs. " Je suis son auteur et un administrateur du site, donc le comportement n'est pas celui annoncé par la documentation. Quoi que ... A noter : Depuis la page ?exec=plan&statuts=articles-refuse on trouve bien cet article. Depuis la page auteur on retrouve également l'article Après réflexion, je me dis que c'est voulu, et que c'est (...)

Revisions : jquery-mousewheel - GitHub http://github.com/brandonaaron/jquery-mousewheel/commits/master

13:01
Tests: Add karma testing - dmethvin Revisions : jquery-mousewheel - GitHub

Tests: Add karma testing
03:22
Tests: Add qunitjs basic tests - dmethvin Revisions : jquery-mousewheel - GitHub

Tests: Add qunitjs basic tests

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

13:00
Trim video using python - Milad Dakka Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to trim a video using python (version 3.7). I've tried the suggested method from the most popular answer of a similar post, using the code: from moviepy.video.io.ffmpeg_tools import ffmpeg_extract_subclip ffmpeg_extract_subclip("ball.mp4", start_time, end_time, targetname="test.mp4") However, I get this ugly error message: Traceback (most recent call last): File "VideoTrim.py", line 1, in from moviepy.video.io.ffmpeg_tools import ffmpeg_extract_subclip File "C:\\Users\\a1689869\\AppData\\Roaming\\Python\\Python37\\site-packages\\moviepy\\video\\io\\ffmpeg_tools.py", line 8, in from (...)
11:26
Creating video from list of images using ffmpeg - haseeb Newest 'ffmpeg' Questions - Stack Overflow

Summary From given code, second function taking UI values and passing to first one. from log, first two lines shows command list and command string. What's irritating me is, if I copied second line from log (dos cmd) and paste it in a cmd prompt, it works successfully and produces video correctly. but running it via gui subprocess, errors out. Task Description Directory contains thousand of images each after few minutes of a construction project. I need to create a video from data (images) per day basis. I have successfully extracted list of images, etc, and have data. utils.py: def (...)
11:10
send h264 nalu data to rtmp server one by one [on hold] - chengkaibing521 Newest 'ffmpeg' Questions - Stack Overflow

I am streaming AAC audio over network, and I need to use ffmpeg to decode the stream. I have tried in local and everything works fine, but over the network I am not sure how to initialize my AVFormatContext
10:50
creating video from list of images using python and ffmpeg - haseeb Newest 'ffmpeg' Questions - Stack Overflow

summary from given code, second function taking UI values and passing to first one. from log, first two lines shows command list and command string. whats irritating me is, if i copied second line from log(dos cmd) and paste it in a cmd prompt, it works successfully and produces video correctly. but running it via gui subprocess, errors out. TASK DESCRIPTION directory contains thousand of images each after few minutes of a contruction project. i need to create a video from data (images) per day basis. i have successfully extracted list of images etc and have data def (...)
08:47
How to get CVPixelBuffer handle from UnsafeMutablePointer in Swift? - Chen OT Newest 'ffmpeg' Questions - Stack Overflow

I got a decoded AVFrame whose format shows 160/Videotoolbox_vld. After googled some articles(here) and viewed the FFmpeg source code(here, and here), the CVBuffer handle should be at AVFrame.data[3]. But the CVBuffer I got seems invalid, any CVPixelBufferGetXXX() function returns 0 or nil. If I used the av_hwframe_transfer_data() like the ffmpeg's example/hw_decode.c did, the sample can be downloaded from HW to SW buffer. Its AVFrame.format will be nv12. After converted via sws_scale to bgra, the sample can be showed on view with correct content. I think the VideoToolbox decoded frame (...) -- here, here, here, example/hw_decode.c
07:21
FFmpeg: Not able to decode H264 encoded file using Ffmpeg library functions [on hold] - Vikas Singh Newest 'ffmpeg' Questions - Stack Overflow

I am trying to decode a H264 encoded attached file using FFmpeg library functions... avformat_open_input() av_read_frame() avcodec_send_packet() avcodec_recieve_frame() . File:- https://drive.google.com/open?id=1t_0nh-6jm5d3VpWIRVd25wYKNvt4Yjo7 When i decode it using- ffplay frame1.bin command it gives me the output image. But when i am trying to decode it using the C program it gives error on avcodec_recieve_frame(). It returns -11. Part of my code i am using for decoding purpose.. uint8_t *inbuf = (uint8_t*) malloc(sizeof(uint8_t)*(INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE)); (...) -- https://drive.google.com/open?id=1t_0nh-6jm5d3VpWIRVd25wYKNvt4Yjo7
06:51
How to get CVBuffer from FFmpeg AVFrame in Swift? - Chen OT Newest 'ffmpeg' Questions - Stack Overflow

I got a decoded AVFrame whose format shows 160/Videotoolbox_vld. After googled some articles(here) and viewed the FFmpeg source code(here, and here), the CVBuffer handle should be at AVFrame.data[3]. But the CVBuffer I got seems invalid, any CVPixelBufferGetXXX() function returns 0 or nil. If I used the av_hwframe_transfer_data() like the ffmpeg's example/hw_decode.c did, the sample can be downloaded from HW to SW buffer. Its AVFrame.format will be nv12. After converted via sws_scale to bgra, the sample can be showed on view with correct content. I think the VideoToolbox decoded frame (...) -- here, here, here, example/hw_decode.c
04:58
ffmpeg aborts with 'dyld: Library not loaded' error - sadlyfe Newest 'ffmpeg' Questions - Stack Overflow

When I run ffmpeg on my Mac (Sierra), I receive the following error: dyld: Library not loaded: ⓐrpath/libx264.138.dylib Referenced from: /Users/me/anaconda/bin/ffmpeg Reason: image not found Abort trap: 6 I tried reinstalling ffmpeg with homebrew, but to no avail. I also tried updating brew and this didn't help either. Are there any fixes to my problem? Thanks
04:46
Problem using ffmpeg in python to decode video stream to yuv stream and send to a pipe - 瓦达所多阿萨德阿萨德 Newest 'ffmpeg' Questions - Stack Overflow

This command works nice and fast in shell: ffmpeg -c:v h264_cuvid -i ./myvideo.mp4 -f null -pix-fmt yuv420p - It was about 13x speed or 300 frames/sec. Then I tried to send the yuv stream to pipe and catch it the main process using the following code in python: cmd = ['ffmpeg', '-c:v', 'h264_cuvid', '-i', './myvideo.mp4', '-f', 'image2pipe', '-pix_fmt', 'yuv420p', '-'] p = subprocess.Popen(cmd, stdout = subprocess.PIPE, stderr=subprocess.PIPE) size_Y = int(height * width) size_UV = int(size_Y / 4) s = time.time() Y = p.stdout.read(size_Y) U = p.stdout.read(size_UV) V = (...)

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

02:21
lsws/ppc/yuv2rgb_altivec: Replace vec_lvsl/vec_perm with vec_xl - Chip Kerchner git.videolan.org Git - ffmpeg.git/rss log

lsws/ppc/yuv2rgb_altivec: Replace vec_lvsl/vec_perm with vec_xl gcc 6.x and 7.x generate wrong code for little endian machines for the vec_lvsl/vec_perm instruction combos in some cases. The bug was fixed in version 8.x If these instructions are replaced with vec_xl, the problem goes away for all versions of the compilers. Fixes ticket #7124. [DH] libswscale/ppc/yuv2rgb_altivec.c

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

03:00
What is the reason for getting libavcodec AVpacket presentation time as 0? - Chamara Manoj Newest 'ffmpeg' Questions - Stack Overflow

Recently I am using FFmpeg library with VS 2017 decode and encode some video data. I used the example codes given with FFmpeg lib packages, transcoding.c. After encoding the video I was trying to extract the frames of the encoded and muxed video.mp4. However, when I read the frames using av_read_frame (AVFormatContext *s, AVPacket *pkt), in the last received frame, pts and dts times are both 0. What could be the reason for this? My Video is playing smoothly and I have used H265 (...)
01:20
Encode PCM to MPEG-2 AAC with FFmpeg APIs - Tank2006 Newest 'ffmpeg' Questions - Stack Overflow

My environment is "ffmpeg version 3.4.6-0ubuntu0.18.04.1" I wrote a program to encode audio data into MPEG-2 AAC with reference to an official example. First, I simply changed the encoder value(and the full source code I wrote is here). if (!(output_codec = avcodec_find_encoder(AV_CODEC_ID_AAC))) But FFmpeg S/PDIF encoder(spdifenc.c) returns an error “Wrong AAC file format”. I use avctx->profile = FF_PROFILE_MPEG2_AAC_LOW(FF_PROFILE_MPEG2_AAC_HE); but it takes no effects. Considering the possibility that the official binary was not compiled with the "CONFIG_ADTS_HEADER" C flag, I ran (...) -- an official example, here

12 August

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

21:17
avcodec/flicvideo: Optimize and Simplify FLI_COPY in flic_decode_frame_24BPP() by... - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/flicvideo: Optimize and Simplify FLI_COPY in flic_decode_frame_24BPP() by using bytestream2_get_buffer() Fixes: Timeout (31sec -> 22sec) Fixes: 16217/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLIC_fuzzer-5658084189405184 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Tomas Härdin <tjoppenⓐacc.umu.se> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] (...)
21:17
avcodec/loco: Check left column value - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/loco: Check left column value Fixes: Timeout (42sec -> 379 ms) Fixes: 16323/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LOCO_fuzzer-5679178099195904 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] libavcodec/loco.c
21:17
tools/target_dec_fuzzer: adjust pixel threshold for MSRLE, as it allows coding gigant... - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

tools/target_dec_fuzzer: adjust pixel threshold for MSRLE, as it allows coding gigantic images on tiny input Fixes: Timeout (12sec ->2sec) Fixes: 16125/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MSRLE_fuzzer-5650846364205056 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] (...)

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

23:01
FFmpeg: seeking not possible with file descriptor on Android Q - Steve M Newest 'ffmpeg' Questions - Stack Overflow

Given the fact that public file paths will generally not be available in Android Q, I am attempting to figure out how to make my FFmpeg audio decoder work with file descriptors, without copying the file to my app's private directories. We can easily get a file descriptor using the methods described in Android Q privacy changes, and it is possible to open the file descriptor using the pipe protocol as described in Passing a native fd int to FFMPEG from openable URI. However, the result is not seekable using av_seek_frame and also the duration is not available using the duration member of (...) -- Android Q privacy changes

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

03:14
avfilter/vf_convolution: Fix build failures - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log

avfilter/vf_convolution: Fix build failures 98e419cb added SIMD for the convolution filter for x64 systems. As usual, it used a check of the form if (ARCH_X86_64) ff_convolution_init_x86(s); and thereby relied on the compiler eliminating this pseudo-runtime check at compiletime for non x64 systems (for which ff_convolution_init_x86 isn't defined) to compile. But vf_convolution.c contains more than one filter and if the convolution filter is disabled, but one of the other filters (prewitt, sobel, roberts) is enabled, the build will fail on x64, because ff_convolution_init_x86 isn't (...)
15:58
libavfilter/vf_scale: Ensure scaled video is divisible by n - Lars Kiesow git.videolan.org Git - ffmpeg.git/rss log

libavfilter/vf_scale: Ensure scaled video is divisible by n This patch adds a new option to the scale filter which ensures that the output resolution is divisible by the given integer when used together with `force_original_aspect_ratio`. This works similar to using `-n` in the `w` and `h` options. This option respects the value set for `force_original_aspect_ratio`, increasing or decreasing the resolution accordingly. The use case for this is to set a fixed target resolution using `w` and `h`, to use the `force_original_aspect_ratio` option to make sure that the video always fits in the (...)
02:17
avcodec/4xm: Check for end of input in decode_p_block() - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/4xm: Check for end of input in decode_p_block() Fixes: Timeout (81sec -> 0.2sec) Fixes: 16169/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5662570416963584 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] libavcodec/4xm.c
02:17
avcodec/hevcdec: Check delta_luma_weight_l0/1 - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

avcodec/hevcdec: Check delta_luma_weight_l0/1 Fixes: signed integer overflow: 1 + 2147483647 cannot be represented in type 'int' Fixes: 16041/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5685680656613376 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: James Almer <jamrialⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] (...)

Revisions : jquery-mousewheel - GitHub http://github.com/brandonaaron/jquery-mousewheel/commits/master

02:47
Build: Preserve copyright in minified file - dmethvin Revisions : jquery-mousewheel - GitHub

Build: Preserve copyright in minified file

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

08:13
fate: add a case for ticket #3229 - Zhong Li git.videolan.org Git - ffmpeg.git/rss log

fate: add a case for ticket #3229 Reviewed-by: Michael Niedermayer <michaelⓐniedermayer.cc> Reviewed-by: Thilo Borgmann <thilo.borgmannⓐmail.de> Signed-off-by: Zhong Li <zhong.liⓐintel.com> [DH] tests/fate/video.mak [DH] tests/ref/fate/mjpeg-ticket3229

Revisions : verifier http://zone.spip.org/trac/spip-zone/log/_plugins_/verifier

13:23
Revision 117540: Coquille dans l'ordre des actions pour enregistrer l'heure… - rastapopoulosⓐ… Revisions : verifier

Coquille dans l'ordre des actions pour enregistrer l'heure… -- Log

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

18:14
MPJPEG Expected boundary '--' not found - Mauro Sampietro Newest 'ffmpeg' Questions - Stack Overflow

I get the following error when streaming from a video camera. "[mpjpeg ⓐ 00555000] Expected boundary '--' not found, instead found a line of n bytes" When debugging, the above error is written to the console multiple times a second. As a result i can only get a frame every many seconds. This prevents me to actually stream from the camera. In release mode, the problem is not there. I'd like to solve the problem the clean way by letting ffmpeg know that stream is not mpjpeg but a mjpeg one. I read about forcing "-f mjpeg" in ffmpeg.exe, but i'm not actually using ffmpeg.exe: i'm using (...)

Revisions : notation http://zone.spip.org/trac/spip-zone/log/_plugins_/notation

12:53
Revision 117533: pas de fermeture php en fin de fichier php - jlucⓐ… Revisions : notation

pas de fermeture php en fin de fichier php -- Log

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

15:39
FFmpeg streaming low CRF results in low quality - Max Paython Newest 'ffmpeg' Questions - Stack Overflow

I am streaming(live chat) with FFmpeg using the following parameters. ffmpeg -f dshow -rtbufsize 100M -i video="device":audio="device" \\ -c:v libx264 -crf 30 -preset ultrafast -tune zerolatency \\ -c:a aac -f mpegts udp://127.0.0.1:1234 Unexpectedly, when CRF is lowered from 30 to 20, step-by-step. The stream quality decreases dramatically. When the CRF is about 20, sudden changes in the picture (like a head movement), seems to make the image green, gray or very distorted. I tried using CRF 30, and the problems seems to be gone. Why is this happening ? I don't think it is a bandwidth (...)

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

16:00
How do video encoding standards(like h.264) then serialize motion prediction? - Nephilim Newest 'x264' Questions - Stack Overflow

Motion prediction brute force algorithms, in a nutshell work like this(if I'm not mistaken): Search every possible macroblock in the search window Compare each of them with the reference macroblock Take the one that is the most similar and encode the DIFFERENCE between the frames instead of the actual frame. Now this in theory makes sense to me. But when it gets to the actual serializing I'm lost. We've found the most similar block. We know where it is, and from that we can calculate the distance vector of it. Let's say it's about 64 pixels to the right. Basically, when serializing this (...)

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

13:31
how to specify codec in m3u8 while creating segments using ffmpeg? - shubham vashisht Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg to create a HLS playlist using segment filter. result = subprocess.Popen(['ffmpeg -y -i -acodec copy -f segment -segment_time -segment_list .m3u8 %03d.ts'.format(pathToDownloadedMediaFile, 10, mediaFileName,mediaFileName)],stdout=subprocess.PIPE,stderr=subprocess.STDOUT, shell=True) the generated file is : #EXTM3U #EXT-X-VERSION:3 #EXT-X-MEDIA-SEQUENCE:0 #EXT-X-ALLOW-CACHE:YES #EXT-X-TARGETDURATION:11 #EXTINF:10.008000, c1dcf7f6643551fc22b82978d31f746fc40ed69d-128000.ts #EXTINF:10.008000, c1dcf7f6643551fc22b82978d31f746fc40ed69d-128001.ts #EXTINF:9.984000, (...)
12:20
How to enable intra-refresh for ffmpegs h.265 encoder in c++? - jmg Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to reduce bandwidth peaks during video streaming and therefore use the intra-refresh option in ffmpegs h264 encoder: x264_param_t m_params; m_params.b_intra_refresh = 1; However I can't find the option to enable intra-refresh with h.265. Here is how I basically init the encoder: x265_param* m_params; x265_picture* m_picIn; AVCodec* m_encoder; AVCodecContext *m_ectx; m_params = x265_param_alloc(); x265_param_default_preset(m_params, "slow", "fastdecode"); m_encoder = avcodec_find_encoder(AV_CODEC_ID_H265); m_ectx = avcodec_alloc_context3(_encoder); m_ectx->width = (...)
11:18
How to convert video to gif and mp3 that sync using ffmpeg? - johan Newest 'ffmpeg' Questions - Stack Overflow

I want to convert video to gif with audio. The two should match when played at the same time. The command I use somehow generates results that's a bit off. To create gif: ffmpeg -ss 00:00:10 -i input.mp4 -t 4 -pix_fmt rgb24 -r 10 -filter:v "scale=-1:300" out.gif To create mp3: ffmpeg -ss 00:00:10 -i input.mp4 -t 4 out.mp3 I'm guessing this has something to do with the slicing.
09:04
variable length of segments in HLS - shubham vashisht Newest 'ffmpeg' Questions - Stack Overflow

I am using FFmpeg to create a hls streaming manifest from a audio file. So far i can break the audio file into several segments based on the duration. Let's say 10. But the requirement is to break audio file in such way that first few segments are of lesser size say 4 seconds and following segments of 10 seconds long. I am calling ffmpeg from a python script like this result = subprocess.Popen(['ffmpeg -y -i -acodec copy -f segment -segment_time -segment_list .m3u8 %03d.ts'.format(pathToDownloadedMediaFile, 10, (...)

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

08:51
tools/target_dec_fuzzer: Add missing breaks - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log

tools/target_dec_fuzzer: Add missing breaks Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] tools/target_dec_fuzzer.c

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

08:40
thumbnail get from MP4 video using NReco.VideoConverter.FFMpegConverter - kabijoy Newest 'ffmpeg' Questions - Stack Overflow

I am using NReco.VideoConverter.FFMpegConverter for create thumbnail from Video file. I used the Video files AVI,FLV formats.. Its working fine to me. But I got error when I used MP4 files. I am getting error like Convertion failed error code:1 var ffMpeg = new NReco.VideoConverter.FFMpegConverter(); ffMpeg.GetVideoThumbnail(VideoUrl, pngFilePath, 100); I want to get thumbnail using MP4 file also.. -- NReco.VideoConverter.FFMpegConverter
08:30
libvideokit.so load Fail (Android FFMPEG) - Janak Newest 'ffmpeg' Questions - Stack Overflow

Getting this error while using in android 6.0 only libvideokit.so load Fail: /data/app/com.examples.ffmpeg4android_demo-1/lib/arm/libvideokit.so -args is not NULL -more then one arg -function symbol not found
07:15
ffmpeg how to do the "earrape" sound effect - Shalin Shah Newest 'ffmpeg' Questions - Stack Overflow

I was wondering how to do the earrape effect using ffmpeg where the audio just sounds completely destroyed. Here's an example: https://www.youtube.com/watch?v=KiCmvQiAC8Q I've tried a bunch of combinations of different commands on ffmpeg and the closest I've gotten is the following (where I use the superequalizer and then make the volume super high): import ffmpeg ( ffmpeg .input('shark.wav') .filter("superequalizer", 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20) .filter("volume", 10) .output('output_earrape.wav') .run() ) I'm using a python wrapper but here's (...) -- https://www.youtube.com/watch?v=KiCmvQiAC8Q
05:27
Processing Camera stream in Opencv, pushing it over RTMP (NGINX RTMP Module) using FFMPEG - Asymptote Newest 'ffmpeg' Questions - Stack Overflow

Output video: https://youtu.be/VxfoBQjoY6E Explanation: I want to: Process camera stream in Opencv and push it over to RTMP server. I already have NGINX (RTMP module) set up and I have tested streaming videos with both RTMP (Flash Player) and HLS. I am reading the frames in a loop and using 'subprocess' in python to execute ffmpeg command. Here's the command I am using: command = [ffmpeg, '-y', '-f', 'rawvideo', '-vcodec','rawvideo', '-pix_fmt', 'bgr24', '-s', dimension, '-i', '-', '-c:v', 'libx264', '-pix_fmt', 'yuv420p', '-preset', 'ultrafast', '-f', 'flv', (...) -- https://youtu.be/VxfoBQjoY6E, https://youtu.be/jsm6XNFOUE4

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

02:25
LICENSE: Add missing libraries that need --enable-version3. - Carl Eugen Hoyos git.videolan.org Git - ffmpeg.git/rss log

LICENSE: Add missing libraries that need --enable-version3. [DH] LICENSE.md
01:56
LICENSE: Update list of GPLv2 libraries. - Carl Eugen Hoyos git.videolan.org Git - ffmpeg.git/rss log

LICENSE: Update list of GPLv2 libraries. [DH] LICENSE.md
01:50
LICENSE: Clarify that lensfun is GPLv3+. - Carl Eugen Hoyos git.videolan.org Git - ffmpeg.git/rss log

LICENSE: Clarify that lensfun is GPLv3+. [DH] LICENSE.md
01:46
LICENSE: Add missing filters licensed under the GPL. - Carl Eugen Hoyos git.videolan.org Git - ffmpeg.git/rss log

LICENSE: Add missing filters licensed under the GPL. [DH] LICENSE.md
01:41
LICENSE: Remove a file that does not exist anymore. - Carl Eugen Hoyos git.videolan.org Git - ffmpeg.git/rss log

LICENSE: Remove a file that does not exist anymore. [DH] LICENSE.md
01:32
LICENSE: Fix path to libswresample test file. - Carl Eugen Hoyos git.videolan.org Git - ffmpeg.git/rss log

LICENSE: Fix path to libswresample test file. [DH] LICENSE.md

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

02:22
Batch merge audio files by specific timestamp without reencoding - Saccarab Newest 'ffmpeg' Questions - Stack Overflow

I want to batch merge mp3 audio files where every single file has a specific start time. So below is the fluent-ffmpeg spawn I use right now to merge 3 files with each starting at respectively 200, 7400 and 10600. ffmpeg -i firstFile.mp3 -i secondFile.mp3 -i thirdFile.mp3 -filter_complex [0]adelay=200[a0];[1]adelay=7400[a1];[2]adelay=10600[a2];[a0][a1] [a2]amix=inputs=3:dropout_transition=1000,volume=3 -f mp3 pipe:1 This works pretty good, except for longer files re-encoding makes the process take real long. So I wanted to do the same thing using concat demuxer. Since I already know how (...)
02:11
How to convert jpg and wav into mp4 with specific duration? [on hold] - Tom Newest 'ffmpeg' Questions - Stack Overflow

I have a .jpg and a .wav file. How can I join these two files into an .mp4 file with let's say a duration of 13 seconds (which is the duration of the wave file)? I should probably use ffmpeg, but there are many flags and parameters about which I have no idea...
02:11
How to batch "touch" files in subfolder with data from parent folder - Constantine Grigorakis Newest 'ffmpeg' Questions - Stack Overflow

I have a folder named "Video" on my Desktop and inside that folder are a bunch of .MTS video files. (00000.MTS, 00001.MTS, 00002.MTS etc...) There is also a subfolder "H.265" (Video > H.265) which contains files (00000.mp4, 00001.mp4, 00002.mp4 etc...) which were made by converting the files from the parent folder. The problem is they don't contain the correct date created metadata. I want to use the command touch -r 00000.MTS 00000.mp4 touch -r 00001.MTS 00001.mp4 ... touch -r 000mn.MTS 000mn.mp4 to copy the date from the MTS to the mp4 file. Is there a way I could write a for loop (...)
01:04
Working Directory: null Environment: null - Mert Newest 'ffmpeg' Questions - Stack Overflow

I am trying to use ffmpeg.so on Android I am getting Working Directory: null Environment: null error. try Process p = Runtime.getRuntime().exec("/data/data/com.example.foo/files/ffmpeg -f image2 -i " + Environment.getExternalStorageDirectory().getAbsolutePath() + "/img/b%d.jpg " + Environment.getExternalStorageDirectory().getAbsolutePath() + "/DCIM/Camera/a444.mp4"); catch (IOException e) e.printStackTrace(); ERROR LOG 04-09 01:50:45.683: I/Adreno-EGL(18393): : EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13 04-09 01:50:45.713: D/OpenGLRenderer(18393): (...)

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