180 posts

2 December

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

18:58
Why is ffmpeg linking with too many libraries? - Thomas Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to build ffmpeg shared libraries for decoding video on Linux systems. The build is done on Arch Linux but the resulting shared libraries need to be as portable as possible. Fortunately, the functionality built into ffmpeg is sufficient, so I don't want to link with any libraries that might or might not be present on the target system. I'm taking libvdpau as an example of an unwanted dependency here, but there are many more. Here's what I tried: $ git clone https://git.ffmpeg.org/ffmpeg.git --branch n4.3.1 --depth 1 $ cd ffmpeg $ mkdir (...) -- ffmpeg, the functionality built into ffmpeg
18:57
How do I combine two filter_complex? - k0ngoz Newest 'ffmpeg' Questions - Stack Overflow

I have these two filters that respectively, work just fine, but I can't seem to combine them. Overlay with opacity ffmpeg -i test.mp4 -i bar.png -filter_complex "[1:v]format=argb,geq=r='r(X,Y)':a='0.5*alpha(X,Y)'[zork]; [0:v][zork]overlay" -vcodec libx264 myresult.mp4 Overlay with left to right movement ffmpeg -i test.mp4 -i bar.png -filter_complex "[0:v][1:v]overlay=x='if(lte(-w+(t)*100,100),-w+(t)*100,100)':y=0[out]" -map "[out]" -y out.mp4 End goal is to have my input picture with 0.5 opacity, and animated (...)
07:01
How to i do %~1 to output to subfolder? [closed] - Mooza Newest 'ffmpeg' Questions - Stack Overflow

For example, I have D:\\Folder\\Files\\File1.mov D:\\Folder\\Files\\File2.mov D:\\Folder\\Files\\File3.mov D:\\Folder\\Files\\File4.mov I wanted to create proxy file using ffmpeg by using this command. ffmpeg -hwaccel cuda -i "%~1" -s 960:540 -c:v libx264 -crf 30 -preset veryfast -g 15 -c:a copy "%~1_proxy.mp4" But I want it to output into subfolder like D:\\Folder\\Files\\Proxy\\File1.mp4 D:\\Folder\\Files\\Proxy\\File2.mp4 D:\\Folder\\Files\\Proxy\\File3.mp4 D:\\Folder\\Files\\Proxy\\File4.mp4 What %~ syntax should I (...)
16:53
ignore "channel_layout" when working with multichannel audio in ffmpeg - umläute Newest 'ffmpeg' Questions - Stack Overflow

I'm working with multichannel audio files (higher-order ambisonics), that typically have at least 16 channels. Sometimes I'm only interested in a subset of the audiochannels (e.g. the first 25 channels of a file that contains even more channels). For this I have a script like the following, that takes a multichannel input file, an output file and the number of channels I want to extract: #!/bin/sh infile=$1 outfile=$2 channels=$3 channelmap=$(seq -s"|" 0 $((channels-1))) ffmpeg -y -hide_banner \\ -i "$infile" \\ -filter_complex (...) -- channelmap filter
16:07
'pjsip-apps/Samples' Cannot functionally run vid_streamutil.c sample - ShootingKIng Newest 'ffmpeg' Questions - Stack Overflow

Issue Description After building[Build Varient=Debug, Build Config=x64] the latest pjproject-vs14 (retargeted to MSVS 2017, WINSDK=8.1, because my application works at these config) as per the build instruction on trac website. Successfully built pjsua and samples. I want to use only RTP + FFMPEG APIs (pjmedia) for my application from pjproject. My config_site.h #define PJMEDIA_HAS_VIDEO 1 #define PJMEDIA_HAS_FFMPEG 1 FFMPEG (pre build from ffmpeg-N-100121-g052b4c3481-win64-gpl-shared.zip) But running the example, vid_streamutil.c did not work as (...) -- ffmpeg-N-100121-g052b4c3481-win64-gpl-shared.zip, vid_streamutil.c (with printfs)
14:35
How to convert the AVPacket of ffmpeg to the webm stream with c++ code? - MichaelGD Newest 'ffmpeg' Questions - Stack Overflow

I am confused how to convert the ffmpeg AVPacket to a living stream in order to I can play it with HTML5. I have already got the AVPacket of ffmpeg with avcodec_encode_video2 AVPacket pkt_; ret = avcodec_encode_video2(c_, &pkt_, picture_, &got_frame); And I also know how to dump the packet to webM file. file_.write(reinterpret_cast(&(pkt_.size)), sizeof(int)); file_.write(reinterpret_cast(&timestamp), sizeof(uint64_t)); file_.write(reinterpret_cast(pkt_.data), pkt_.size); But, How can I create a stream server with the packets (...)
14:15
ffmpeg aloop filter not working correctlly - Abhishek Sharma Newest 'ffmpeg' Questions - Stack Overflow

I am trying to run FFmpeg Command as follow -i "v1.mov" -i "0.mp3" -filter_complex "[0:v]trim=0:204,setpts=PTS-STARTPTS[TrimmedVideo];[0:a]atrim=0:204,asetpts=PTS-STARTPTS[TrimmedAudio];[TrimmedVideo]scale=848:360[BackgroundOutput];[1:a]atrim=0:20,asetpts=PTS-STARTPTS,volume=0.37,aloop=1:size=1*48000,adelay=0|0[AudioTrim0];[TrimmedAudio][AudioTrim0]amix=inputs=2:duration=first:dropout_transition=2,volume=2[AudioMixOut];[BackgroundOutput][AudioMixOut]concat=n=1:v=1:a=1[OutputVideo][OutputAudio]" -map [OutputVideo] -map [OutputAudio] -c:v libx264 -c:a aac -b:a 256k -preset ultrafast (...)
13:47
Get aspect ratio of video from FFmpeg - Rocky Singh Newest 'ffmpeg' Questions - Stack Overflow

I am using FFmpeg to convert a video from one format to another. I need to extract the aspect ratio of the video first. How can I find that information?
13:33
discord.py music bot can't play next song - bork Newest 'ffmpeg' Questions - Stack Overflow

I'm making a discord music bot using ffmpeg and youtube-dl. I have a premade playlist of urls that would play the list of songs once a user chooses it. this is my code for playing the audio ydl_opts = 'format': 'bestaudio', 'noplaylist':'True', 'youtube_include_dash_manifest': False FFMPEG_OPTIONS = 'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn' songs = url[playlist] dur_min = (...)
13:21
Downloading video & audio segment simultaneously with youtube-dl and ffmpeg - Mtaly Newest 'ffmpeg' Questions - Stack Overflow

For an online streaming video that I would like to download I have two m3u8 files. One for the video itself with segment-0.ts to segment-250.ts: #EXTINF:6.000000, segment-0.ts #EXTINF:6.000000, segment-1.ts #EXTINF:6.000000, segment-2.ts #EXTINF:6.000000, segment-3.ts #EXTINF:6.000000, segment-4.ts and another m3u8 for the audio segments: #EXTINF:6.016000, segment-0.aac #EXTINF:6.016000, segment-1.aac #EXTINF:6.016000, segment-2.aac #EXTINF:6.016000, segment-3.aac #EXTINF:6.016000, So, I (...)
13:20
ffmpeg stream Raspberry pi - Matt85 Newest 'ffmpeg' Questions - Stack Overflow

I use a rasberry pI4 with usb camera to stream on our server in rtmp we would like to use the native resolution of the cam I use video4linux and ffmpeg here the formats you see: [video4linux2, v4l2 ⓐ 0x17641c0] Compressed: mjpeg: Motion-JPEG: 1600x1200 3264x2448 2592x1944 2048x1536 1280x960 1024x768 800x600 640x480 320x240 1600x1200 [video4linux2, v4l2 ⓐ 0x17641c0] Raw: yuyv422: YUYV 4: 2: 2: 1600x1200 3264x2448 2592x1944 2048x1536 1280x960 1024x768 800x600 640x480 320x240 1600x1200 this are the result supported by the usb cam in 2 formats (YUY and MJPEG) (...)
10:35
FFMPEG: how to select audio stream without language metadata - riofly Newest 'ffmpeg' Questions - Stack Overflow

I have some source Video files with one or more audio streams inside. I would to encode each source file with Italian language. Then I can do it. ffmpeg -i source-file.avi -c:v ... -c:a ... -map 0:a:m:language:ita ... But some source file has audio stream without Language metadata. I look that it is possible to set Language metadata with "und" special value. Then I try to select the audio stream with this command: ffmpeg -i source-file.avi -c:v ... -c:a ... -map 0:a:m:language:ita? -map 0:a:m:language:und? ... (the "?" char say to ffmpeg that he do (...)
09:54
Node.JS FFMPEG display two videos next to each other - James Zammit Newest 'ffmpeg' Questions - Stack Overflow

Does anyone have a clue of how to use the node.js wrapper for ffmpeg(fluent-ffmpeg) to merge two videos into one showing one on the left side and another on the right, not concatenation. Thank you!
09:23
RTSP Invalid data found when processing input - Даша Оніщенко Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to connect to the IP camera stream = new Stream( name: 'name', streamUrl: 'rtsp://91.245.79.15:8556/Streaming/Channels/0', wsPort: 9999, ffmpegOptions: // options ffmpeg flags '-stats': '', // an option with no neccessary value uses a blank string '-r': 30 // options with required values specify the value after the key ) But I receive the following error on the terminal: rtsp://91.245.79.15:8556/Streaming/Channels/0: Invalid data found when processing (...)
09:23
How to best add dvb_subtitles to a video using ffmpeg? - L42 Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to get from a .srt subtitle file + a .ts video file => a .ts video file with a dvb_subtitle. My .srt: 1 00:00:00,000 --> 00:00:05,000 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi vel hendrerit massa. 2 00:00:05,000 --> 00:00:10,000 Aliquam dolor sapien, molestie ac sagittis eu, tempus nec est. 3 00:00:10,000 --> 00:00:28,000 Morbi id sem eu sapien consectetur imperdiet. Morbi sed purus et sapien interdum placerat vitae quis orci. My .ts: sample_1920x1080.ts from (...) -- https://filesamples.com/formats/ts, SubtitleEdit, , https://github.com/SubtitleEdit/subtitleedit/issues/4539, here
09:15
Lightweight encoding method for RTSP stream? - nukaboy Newest 'ffmpeg' Questions - Stack Overflow

what i am trying to do is to save a RTSP-stream as a file with some text overlay (so copy is not an option) on a Raspberry Pi. I tried using FFMPEG, but even with ultrafast settings the CPU load is way too high. Is there a faster encoding method or a completely different approach that i am missing? ffmpeg -rtsp_transport tcp -i rtsp://x:yⓐip/stream1 -vcodec libx264 -preset ultrafast -crf 0 -segment_time 3600 -t 3600 -f segment -y -strftime 1 -vf drawtext="fontcolor=white:fontsize=30:text='%localtime'",drawtext="fontcolor=white:fontsize=30:textfile=text.txt:x=600" (...)
08:39
php. shell_exec / exec / proc_open. Is there way to write output information in php variable (output information must be a file type)? - rzlvmp Newest 'ffmpeg' Questions - Stack Overflow

I using ffmpeg inside PHP code and try to read from stdin (read S3 object) and write information into memory (or PHP variable). aws s3 cp s3://bucketA/input.jpg - | \\ ffmpeg -y -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -f jpeg_pipe -loop 1 -i pipe:0 -c:v 'libx264' -r 29.97 -t 30 -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2,setsar=1" -c:a aac -shortest -movflags faststart -f mp4 /path/output_file I can't write into stdout because it is non seekable stream type. So output must be a file like type or seekable stream. Right (...)
05:41
FFMPEG throws error can not open display error for :1 - Krishna Newest 'ffmpeg' Questions - Stack Overflow

i am using Xvfb for starting X server on display 1 and x11vnc is also set for -display :1 along with fluxbox as window manager on Ubuntu 20.04 LTS like using below commands sudo -i -u ubuntu Xvfb :1 +extension GLX -screen 0 1440x1080x16 -ac sudo -i -u ubuntu DISPLAY=:1 fluxbox sudo -i -u ubuntu x11vnc -forever -display :1 and when i run command: "ffmpeg -video_size 1440x1080 -framerate 25 -f x11grab -i :1.0 -c:v libx264rgb -crf 0 -preset ultrafast sample.mp4" it runs, however when i execute programmatically through processbuilder i see that in output buffer stream log file (...)
05:35
Delphi android, deploying AND dynamic loading (external) libraries - coban Newest 'ffmpeg' Questions - Stack Overflow

I am trying to start creating an application to test FFmpeg libraries, kind of a mediaplayer application, for ANDROID using Delphi 10.3/10.4 I am getting some (strange ?) behaviors on different machines and locations of the files on the phone/tablet. The very first question should be; what folder is the right one to put (external) libraries for dynamic/static loading? I tried 2 locations; '.\\assets\\internal' -> 'files' folder of the app and 'library\\lib\\armeabi-v7a' -> bin folder (if i'm right) behavior on mobile phone Android (...)
05:34
How to convert a CCTV footage into time lapse video by cutting parts of the video by a set interval on FFMPEG [duplicate] - mark Newest 'ffmpeg' Questions - Stack Overflow

I have bunch of CCTV footages and I want it to look like it was recorded from a time lapse camera. One video file is around 3 hours long capturing scenes in real time (from 1pm-3pm for example). And in one day, I'll get around 8 footages (8files * 3hours = 24hours = 1 day) I want to convert those 24hours worth of footages to 1min making 1 day = 1min of video not just making it fast but actually cutting some of the scenes by a set interval. Usually, a time lapse camera has an interval of one photo per 10 min and at the end of the day, it will stitch them into one video. How can I (...)
05:08
Ffmpeg - What changes to make in the code to adapt it to the GPU with the filter_complex option - Jérémie Martin Newest 'ffmpeg' Questions - Stack Overflow

Good morning all, For a project, I have to take 8 videos as input and process them to position them correctly. The code below works in CPU: ffmpeg -i $arr[1] -i $arr[2] -i $arr[3] -i $arr[4] -i $arr[5] -i $arr[6] -i $arr[7] -i $arr[8] -filter_complex "nullsrc=size=1920x1080 [base]; [0:v] setpts=PTS-STARTPTS, scale=1440x810 [upperleft]; [1:v] setpts=PTS-STARTPTS, scale=480x270 [lowerleft]; [2:v] setpts=PTS-STARTPTS, scale=480x270 [lower2]; [3:v] setpts=PTS-STARTPTS, scale=480x270 [lower3]; [4:v] setpts=PTS-STARTPTS, scale=480x270 [lowerright]; [5:v] setpts=PTS-STARTPTS, (...)
06:06
Why psnr values generated by ffmpeg is inf？ - Lin Lingfeng Newest 'ffmpeg' Questions - Stack Overflow

I use ffmpeg to calcute PSNR value. OS: Ubuntu-18.04 Commond: ffmpeg -i ../dataset/1080p-1k_rename/ggg_30_.jpg -i ../dataset/decode_dir_1k/ggg_30_.jpg -lavfi psnr="stats_file=./jpg_name.log" -f null - Result: ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2020 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) ... ... Output #0, null, to 'pipe:': Metadata: encoder : Lavf58.45.100 Stream #0:0: Video: wrapped_avframe, yuvj420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 (...) -- ffmpeg
05:51
How to transfer video as rtp stream with least delay by FFmpeg - Yasushi2019 Newest 'ffmpeg' Questions - Stack Overflow

I use AXIS M1045-LW supporting rtsp/http access, and my Windows 10 PC can access to the camera through LAN. I would like to transfer the video as rtp with keeping H.264 codec which is supported by the camera. Image [Camera] == (rtsp or http) ==> [FFmpeg on Win10] == (rtp) ==> When I accessed the camera through Google Chrome on my Win10 PC, there is only 1 or 2 sec delay. However, when I tried access by the following command, I found over 10 sec delay. How could I reduce the delay as much as possible? [Windows Command Prompt A ] (...)
04:07
How to record audio with ffmpeg on linux? - Conor Patrick Newest 'ffmpeg' Questions - Stack Overflow

I'd like to record audio from my microphone. My OS is ubuntu. I've tried the following and got errors $ ffmpeg -f alsa -ac 2 -i hw:1,0 -itsoffset 00:00:00.5 -f video4linux2 -s 320x240 -r 25 /dev/video0 out.mpg ffmpeg version 0.8.8-4:0.8.8-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers built on Oct 22 2013 12:31:55 with gcc 4.6.3 *** THIS PROGRAM IS DEPRECATED *** This program is only provided for compatibility and will be removed in a future release. Please use avconv instead. ALSA lib conf.c:3314:(snd_config_hooks_call) (...)
03:02
animated gif watermark with logo, text and user id using ffmpeg [duplicate] - Pythonsguru Newest 'ffmpeg' Questions - Stack Overflow

I have a video, want to add a rotating watermark.gif with draw text on video using ffmpeg command I am using following command, I am using following command for .png it is working fine ffmpeg -i vid1.mp4 -i watermark.png -filter_complex "[0:v][1:v]overlay=10:10,drawtext=fontfile=arial.ttf:text='Hello':fontcolor=whiteⓐ1.0:fontsize=30:y=90:x=30:'" -c:a copy -movflags +faststart output.mp4 and using .gif it working fine but ffmpeg -i "vid1.mp4" -ignore_loop 0 -i "logo.gif" -filter_complex "[1:v]scale=60:50,rotate=PI/6:c=blackⓐ0:ow=rotw(PI/6):oh=roth(PI/6) (...)
02:26
Why ffmpeg can play h264 even when flag --disable-libx264 is set? [closed] - Jams Newest 'ffmpeg' Questions - Stack Overflow

To be complient with x264 licensing (for a commercial software I'm making) I plan to use a compiled version of ffmpeg without x264 support. Here is the ouput of the command line ffmpeg -L: ffmpeg version n4.3.1-20-g8a2acdc6da Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9.3-win32 (GCC) 20200320 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-version3 --disable-debug --enable-shared --disable-static --disable-debug (...) -- https://github.com/BtbN/FFmpeg-Builds/releases
00:05
How do i create a one-to-many realtime app using nodejs - rocky Newest 'ffmpeg' Questions - Stack Overflow

I'm building a live streaming video app and I want the user to broadcast from device to many devices. I tried using webRTC but I noticed that it creates more load for the CPU of the users. Now, I was able to record stream using MediaRecorder from the browser to node js server via socket.io. The question is: How do I ingest the stream using ffmpeg or any other efficient method and broadcast to many users? // Client side const recorder = new MediaRecorder(stream); recorder.addEventListener('dataavailable', e => socket.emit('listen to (...)
00:26
What would cause video whose position is set and played at a certain millisecond, to not align with a video trimmed to that same millisecond position? - Cha Pa Newest 'ffmpeg' Questions - Stack Overflow

I have developed a windows C# application that allows you to cut clips of video that is synched to a transcript. The application has a video tuner that allows you to adjust the start and stops of the clip in .1, 1, 3 seconds and gives you a short 2 second preview of the start or 2 seconds leading up to the stop as a preview. Then you can cut that video into a small clip by pressing a create clip button. Because of of the nature of the provider of the videos, these videos are typically Mpeg1 that are over an hour long and are all varying in both in width/height dimensions as well (...)

1 December

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

22:29
Is there a way to save a matplotlib animation as a video (with ffmpeg) so that the last frame is held for N seconds? - janluke Newest 'ffmpeg' Questions - Stack Overflow

I'm using FFMpegWriter to save a matplotlib animation as a video. I'd like to hold the last frame for some seconds at the end of the video. As a workaround, one could modify the animation itself by repeating the last frame for a number of extra steps. This number of steps can be computed as a function of the desired "hold duration" and the interval/fps of the animation. Nonetheless, I'd like to know if there's a cleaner way to do the same without artificially modifying the animation itself and using instead some extra arguments for the writer (which uses (...)
23:26
How to convert ffmpeg command to ffmpeg-python - Retro Pie Newest 'ffmpeg' Questions - Stack Overflow

Hello and thanks for reading. I have the following command : ffmpeg -i tmp.mp4 -loop 1 -i mask.png -filter_complex "[0:v]split [a][b];[a]transpose=1,crop=720:888:0:196,scale=876:1080,setdar=876/1080 [crop];[b]transpose=1,crop=720:888:0:196,scale=1920:1080,setdar=16/9,avgblur=76 [back];[1:v]alphaextract [mask];[crop][mask]alphamerge [masked];[back][masked]overlay=522:0" "out.mp4 And I would like to convert it to ffmpeg-python syntax. So far I was able to come up with the bellow, but it far from ready: overlay_file = (...)
23:41
How to crop a mp3 from x to x+n using ffmpeg? - marcgg Newest 'ffmpeg' Questions - Stack Overflow

Following this question I decided to use ffmpeg to crop MP3s. On another question I found this way of doing it: ffmpeg -t 30 -acodec copy -i inputfile.mp3 outputfile.mp3 The problem is that I don't want to crop the first 30 seconds, I want to crop from x to x+n, like from 30s to 100s. How would I go and do this? I'm reading the man for ffmpeg but this is not really straightforward, especially since I just discovered about ffmpeg and I'm not familiar with audio/video editing softwares, so any pointers would be (...) -- man for ffmpeg
22:23
lld-link error compiling chromium with ffmpeg additional calls - michal-b Newest 'ffmpeg' Questions - Stack Overflow

After adding some calls to ffmpeg from the ffmpeg_decoding_loop, I have errors when compiling on Windows (both directly on Windows and when cross-compiling from linux). What I don't understand is that it works without an issue on linux/macos. I have multiple calls to ffmpeg code but let's boil it down to a representative example. I call this : const AVFilter *buffer_src = avfilter_get_by_name("buffer"); On linux/macos : no problems. On windows : lld-link: error: undefined symbol: avfilter_get_by_name >>> referenced by (...)
22:08
Discord.Net sending audio with ffmpeg only works once (the first time) - Esko Newest 'ffmpeg' Questions - Stack Overflow

Context: So I am writing a small bot that should play local audio files on command. I am using Discord.Net, ffmpeg, opus and libsodium. I have a Speak() function that should, in Theory, Open ffmpeg -> encode .mp3 -> create PCM stream -> pump the encoded .mp3 to the output(PCM Stream). That looks like this: public async Task Speak(IGuild guild, Sound.SoundName soundName) IAudioClient client; if (ConnectedChannels.TryGetValue(guild.Id, out client)) using (var ffmpeg = CreateStream(sound.Filename)) using (var stream = (...)
21:44
FFMPEG: At least one output file must be specified - JeroenWeber Newest 'ffmpeg' Questions - Stack Overflow

I am trying to split a video from a URL.... this is my CMD command: ffmpeg -i 'https://mediasite-ondemand.maastrichtuniversity.nl/MediasiteDeliver/ondemand/MP4Video/90e0ea3d-4087-4a3d-8a78-7acf7906c4cb.mp4?playbackTicket=fb14f2f3baf84412bc6463d4e312ec27&site=mediasite.maastrichtuniversity.nl' -ss 00:00:00 -t 0:25:00 -c copy SplicedVid.wav Why does it return: 'site' is not recognized as an internal or external command, operable program or batch file. My version: ffmpeg -version output: ffmpeg version (...)
18:51
ffmpeg Invalid stream specifier: si - Abhishek Sharma Newest 'ffmpeg' Questions - Stack Overflow

I am trying to run the following command : -i "2020_11_30_03_37_37.mp4" -i "2020_11_30_03_37_44.jpg" -f lavfi -t 6.016 -i anullsrc -filter_complex "[0:v]crop=544:544:0:208,boxblur=luma_radius=10:chroma_radius=10:luma_power=1,scale=1080:1080[bg];[0:v]scale=612:1080[fg];[bg][fg]overlay=234:0:shortest=1[si];[si]trim=0:1,setpts=(PTS-STARTPTS)*2[video0];[0:a]atrim=0:1,asetpts=PTS-STARTPTS,atempo=0.5[audio0];[si]trim=1:5.016,setpts=(PTS-STARTPTS)*1[video1];[0:a]atrim=1:5.016,asetpts=PTS-STARTPTS,atempo=1[audio1];[video0][audio0][video1][audio1]concat=n=2:v=1:a=1[mv];[1:v]scale=428:-1[sticker1];
18:16
I have a TTS code what uses discord.js/Node.js And it keeps giving me this error - rowisacode Newest 'ffmpeg' Questions - Stack Overflow

So the code gets the user input, and puts it in a fill. but it keeps fiving me this error made "./778055120285073448-tts_message.txt" text file for tts stdout: [02:37:03] Reading text [started] [02:37:03] Reading text [completed] [02:37:03] Splitting text [started] [02:37:03] Splitting text [completed] [02:37:03] Convert to audio [started] [02:37:03] Convert to audio (0/1) [title changed] [02:37:03] Convert to audio (0/1) [title changed] [02:37:04] Convert to audio (1/1) [title changed] [02:37:04] Convert to audio (1/1) [completed] (...)
17:20
Push to another server based on incoming url - Rainmanjam Newest 'ffmpeg' Questions - Stack Overflow

Playing around with nginx and wanted to know if there was a way to take an incoming RTMP stream and redirect it to another server based on the URL used. For example: rtmp://ingress.foo.com/live/ would forward to rtmp://.internal.foo.com Thanks.
16:38
OpenCV FFMPEG RTSP Camera Feed Errors - trn2020 Newest 'ffmpeg' Questions - Stack Overflow

I'm getting these errors at random times when saving frames from an rtsp camera feed. The errors happen at different times, usually after 100-200 images have been saved, and the errors themselves are not always exactly the same. They cause the images that are saved at the time of the error to be distorted either to the point of being completely grey or contain distorted pixels. #Frame_142 - [hevc ⓐ 0c3bf800] The cu_qp_delta 29 is outside the valid range [-26, 25]. #Frame_406 - [hevc ⓐ 0b6bdb80] Could not find ref with POC 41 I've tried implementing the code in (...)
15:49
FFmpeg: Invalid buffer size when streaming to Twitch - user1965074 Newest 'ffmpeg' Questions - Stack Overflow

I am streaming a 2560x1440 ⓐ 24FPS to Twitch with this command: ffmpeg \\ > -f rawvideo \\ > -vcodec rawvideo \\ > -s 2560x1440 \\ > -pix_fmt bgr24 \\ > -r "24" \\ > -i 20200818-074700.mp4 \\ > -f flv \\ > -vcodec libx264 \\ > -profile:v main \\ > -g 48 \\ > -keyint_min 24 \\ > -b:v 4500k \\ > -minrate 4500k \\ > -maxrate 4500k \\ > -pix_fmt yuv420p \\ > -preset ultrafast \\ > -tune zerolatency \\ > -threads 0 \\ > -bufsize 4500k \\ > rtmp://live-arn.twitch.tv/app/KEY It fails with message Invalid buffer size, (...)
14:34
How to set framerate for video produced from ffmpeg - Gordon Newest 'ffmpeg' Questions - Stack Overflow

I have 225 images and want a 15 fps video I should get a 225/15=15 second video. I set 'r' to 15 but I only got 9 second video. What's wrong? subprocess.call([ 'ffmpeg', '-i', 'file%02d.png', '-r', '15', '-pix_fmt', 'yuv420p', 'video_name.mp4' ])
14:30
Encoding of D3D11Texture2D to an rtsp stream using libav* - uzer Newest 'ffmpeg' Questions - Stack Overflow

Firstly I'll declare that I am just beginning with whole libav* and no experience with DirectX, so please go easy on me. I have managed to create a rtsp stream using libav* using video file as source. Now, I am trying to create an rtsp stream from an ID3D11Texture2D, which I am obtaining from GDI API using Bitblit method. Here's my approach for creating live rtsp stream: Set input context AVFormatContext* ifmt_ctx = avformat_alloc_context(); avformat_open_input(&ifmt_ctx, _videoFileName, 0, 0); Set output (...) -- GDI API using Bitblit, article
12:08
how to add watermark.gif and drwatext twice on videos [duplicate] - Pythonsguru Newest 'ffmpeg' Questions - Stack Overflow

I have a video, want to add a rotating watermark.gif with draw text on video using ffmpeg command I am using following command, I am using following command for .png it is working fine ffmpeg -i vid1.mp4 -i watermark.png -filter_complex "[0:v][1:v]overlay=10:10,drawtext=fontfile=arial.ttf:text='Hello':fontcolor=whiteⓐ1.0:fontsize=30:y=90:x=30:'" -c:a copy -movflags +faststart output.mp4 and using .gif it working fine but ffmpeg -i "vid1.mp4" -ignore_loop 0 -i "logo.gif" -filter_complex "[1:v]scale=60:50,rotate=PI/6:c=blackⓐ0:ow=rotw(PI/6):oh=roth(PI/6) (...)
12:34
Extracting frames from video while recording using ffmpeg - nilolo Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg to record a video using a Raspberry Pi with its camera module. I would like to run a image classifier on a regular interval for which I need to extract a frame from the stream. This is the command I currently use for recording: $ ffmpeg -f video4linux2 -input_format h264 -video_size 1280x720 -framerate 30 -i /dev/video0 -vcodec copy -an test.h264 In other threads this command is recommended: ffmpeg -i file.mpg -r 1/1 $filename%03d.bmp I don't think this is intended to be used with files that are still appended to and I get the (...)
11:20
how to use or import ffmpeg in a laravel controller - Vines Villa Newest 'ffmpeg' Questions - Stack Overflow

i have already installed the laravel-ffmpeg via composer in my project composer require pbmedia/laravel-ffmpeg then i added class to config/app.php file as documentation says // config/app.php 'providers' => [ ... ProtoneMedia\\LaravelFFMpeg\\Support\\ServiceProvider::class, ... ]; 'aliases' => [ ... 'FFMpeg' => ProtoneMedia\\LaravelFFMpeg\\Support\\FFMpeg::class ... ]; then publish this config file php artisan vendor:publish (...)
11:20
Decoder (codec none) not found for input stream #0:30 - mega6382 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to run the following ffmpeg command: /usr/bin/ffmpeg -c:v copy -c:a libfdk_aac -b:a 96k -tune zerolatency -threads 1 -f flv 'rtmp://my_host:1935/my_stream' -i 'rtmp://my_host:1935/my_ffmpeg_stream' And I get a long list of errors until I finally get this error: Decoder (codec none) not found for input stream #0:30 Here are the screenshots of some of the other errors(there are hundreds of these same): (...) -- , , , , ,
11:18
ffmpeg-python trim why not concat - 李良全 Newest 'ffmpeg' Questions - Stack Overflow

I want to split the video, do some logical processing, and finally merge it import ffmpeg info = ffmpeg.probe("test.mp4") vs = next(c for c in info['streams'] if c['codec_type'] == 'video') num_frames = vs['nb_frames'] arr = [] in_file = ffmpeg.input('test.mp4') for i in range(int(int(num_frames) / 30) + 1): startTime = i * 30 + 1 endTime = (1 + i) * 30 if endTime >= int(num_frames): endTime = int(num_frames) # more more (...)
09:59
What is the best way to Stream multiple CCTV RTSP into Node.js - Borneo Dev Newest 'ffmpeg' Questions - Stack Overflow

I am trying to start to build a node.js application that is going to receive RTSP video streams from IP CCTV cameras. I have spent considerable amount of time studying opencv and ffmpeg as the tool to listen to the cctv rtsp streams. with opencv, I am very confused if I need to use opencv.js to be included in node script or to download and install opencv build into my os. with ffmpeg, Im not sure if I can access the mat object (mat as in opencv) to be passed to a video processing module (such as tensorflow for object detection). When I look and tested ffmpeg RTSP examples, (...)
09:37
how to use ffmpeg in laravel 8.x project - user14698698 Newest 'ffmpeg' Questions - Stack Overflow

so i just installed ffmpeg package in my laravel 8 project using composer require pbmedia/laravel-ffmpeg i also publish the file when added class in app.php file as documentation says, but i don't know how can i use this i want to use this here use FFMpeg; public function videoUpload(Request $request) $files=$request->file('files'); $newVideo = FFMpeg::fromDisk('videos') ->open($files) ->save('small_steve.mkv'); return (...)
08:45
ffmpeg split avi into frames with known frame rate - Myx Newest 'ffmpeg' Questions - Stack Overflow

I posted this as comments under this related thread. However, they seem to have gone unnoticed =( I've used ffmpeg -i myfile.avi -f image2 image-%05d.bmp to split myfile.avi into frames stored as .bmp files. It seemed to work except not quite. When recording my video, I recorded at a rate of 1000fps and the video turned out to be 2min29sec long. If my math is correct, that should amount to a total of 149,000 frames for the entire video. However, when I ran ffmpeg -i myfile.avi -f image2 image-%05d.bmp I only obtained 4472 (...)
08:41
What's the best FFMPEG Minterpolate settings for animation? - DefyEnjoy Newest 'ffmpeg' Questions - Stack Overflow

So, I've been searching for minterpolate settings that fit best, or is the closest to DAIN, but I can't really find some that fit best to how DAIN works. Usually, this is the minterpolate code I use: ffmpeg -i inputfile.mp4 -filter:v "minterpolate='mi_mode=mci:mc_mode=aobmc:vsbmc=1:fps=120:me=fss'" outputfile.mp4 I've searched again and again multiple times, but my search just keeps coming back to this line of code being the best settings for what's I'm looking for. But, does anybody here have any better suggestions for ones that (...)
07:12
Buid Exoplayer with ffmpeg extension - Bhoomi Kalavadiya Newest 'ffmpeg' Questions - Stack Overflow

I'm making IP streaming android application. In which I'm using exoplayer 2.12.0. Input video is having mpeg-L2 audio layer codec which is not supported by exoplayer https://github.com/google/ExoPlayer/issues/6525. So i'm using ffmpeg extension to render audio. I have followed https://github.com/google/ExoPlayer/tree/release-v2/extensions/ffmpeg steps to build ffmpeg extension with android-ndk-r21d-linux-x86_64 and FFmpeg-release-4.3. Added code in the application TrackSelector trackSelectors = new DefaultTrackSelector(new AdaptiveTrackSelection.Factory()); (...) -- https://github.com/google/ExoPlayer/issues/6525, https://github.com/google/ExoPlayer/tree/release-v2/extensions/ffmpeg
06:25
How can I compress a video to a desired size using FFMPEG? [duplicate] - zeopticz Newest 'ffmpeg' Questions - Stack Overflow

I want to compress a video file, which is around 200MB to near 8MB. I am using FFMPEG, how can I achieve this? I tried some ways but they didn't work.
06:00
How to merge several audio and video file with defined start time using ffmpeg? [closed] - Sina Rostami Newest 'ffmpeg' Questions - Stack Overflow

I want to merge several audio and video files with their defined start time using ffmpeg. for example consider these : a.mp3 (00:00) b.mp3 (00:10) c.mp3 (00:20) a.mp4 (00:10) and in the overlapping times, both file should be played. the output should be a file (out.mp4) like this : time: |---------------a.mp4-----------------| |---a.mp3--| |---b.mp3----| |----c.mp3-------------| ==================================================== and it's okay to show a black screen when there's no video files at the (...)
04:17
ffmpeg xfade audio out of sync - Richard Newest 'ffmpeg' Questions - Stack Overflow

hi I am using ffmpeg xfade to concat two clips, the transition looks fine, but the second clip has no audio in the output. I don't find more information about this in https://trac.ffmpeg.org/wiki/Xfade and the official doc. Can I keep the audio of both clips in sync? I'm puttting the complete log below, it's massive ffmpeg -i teacher1.mp4 -i teacher2.mp4 -filter_complex xfade=transition=fadewhite:duration=1:offset=14.5 output.mp4 ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2020 the FFmpeg developers built with gcc 8 (...) -- https://trac.ffmpeg.org/wiki/Xfade
02:11
Generating number of thumbnails depending on video size using AWS MediaConvert - sakhunzai Newest 'ffmpeg' Questions - Stack Overflow

After reading this article I get the sense that AWS media convert job template cannot be re-used to generate thumbnails of arbitrary video size. The article assumes that we know the size/duration of video uploaded upfront hence the number of thumbnails we desire. What I am looking for is to generate a random number of thumbnails based of video size (e.g large number of thumbnails for large video and small number of thumbnails for small video). I approached this solution using lambda trigger and ffmpeg lambda layer but lambda function timeouts (15 minutes max) for videos larger than (...) -- article
02:04
ffmpeg how to ignore initial empty audio frames when decoding to loop a sound - cs guy Newest 'ffmpeg' Questions - Stack Overflow

I am trying to loop a ogg sound file. The goal is to make a loopable audio interface for my mobile app. I decode the given ogg file into a buffer and that buffer is sent to audio card for playing. All good until it the audio finishes (end of file). When it finishes I use av_seek_frame(avFormatContext, streamInfoIndex, 0, AVSEEK_FLAG_FRAME); to basically loop back to beginning. And continue decoding into writing to the same buffer. At first sight I thought this would give me perfect loops. One problem I had was, the decoder in the end gives me extra empty frames. So I ignored them by (...) --

30 November

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

19:01
Font Family not rendering properly through subtitle ass in ffmpeg [closed] - Konduri Sai Aditya Newest 'ffmpeg' Questions - Stack Overflow

Some of the font family's like Pacifico are not rendering properly with the requested font size through .ass file in ffmpeg. Although some other fonts are rendered properly with similar font size. Any reason why some fonts are not loaded properly with their respective widths?
20:20
Make video from individual frames (PNGs) and add audio track - IntergalacticSpaceMonkey Newest 'ffmpeg' Questions - Stack Overflow

I have been working on a video processing tool that takes each frame from an input video and saves the result as a series of images. So, in essence, if my video has a length of 5 minutes, and has 25 fps, I will get 7500 individual frames. What I want is then to put this back into a video format, but at the same time also add the audio track from the original source. Is this possible with ffmpeg? Also, would it be possible to automatically determine the fps on the original video source and then use this as fps value for ffmpeg for the video + audio track in the new video (...)
19:33
Produce waveform video from audio using FFMPEG - RhythmicDevil Newest 'ffmpeg' Questions - Stack Overflow

I am trying to create a waveform video from audio. My goal is to produce a video that looks something like this For my test I have an mp3 that plays a short clipped sound. There are 4 bars of 1/4 notes and 4 bars of 1/8 notes played at 120bpm. I am having some trouble coming up with the right combination of preprocessing and filtering to produce a video that looks like the image. The colors dont have to be exact, I am more concerned with the shape of the beats. I tried a couple of different approaches using showwaves and showspectrum. I cant quite wrap my head around why when (...) -- , link, link, link
19:31
Can one "fix" a video with non monotonic DTS? - amn Newest 'ffmpeg' Questions - Stack Overflow

I've got a number of WebM containers (input.webm), each with a VP9 video track and an Opus audio track. These containers (files) were generated with an older version of Google Chrome using the MediaRecorder Web API, by a live media recording Web application. As part of an attempt to make the material available to a certain overly stubborn Windows DirectShow application that is otherwise refusing to import WebM files -- despite the fact that we've got DirectShow filters for demuxing WebM and decoding VP9 and Opous installed and verified to be working on the application host (...) -- MediaRecorder
19:12
When I set libx264 codec in ffserver the stream does not show up in browser - 0 day Newest 'ffmpeg' Questions - Stack Overflow

When I set VideoCodec libx264 in ffserver.conf the stream does not show up in browser Format webm # webm Feed feed1.ffm VideoCodec libx264 # swf #libx264 VideoSize 840x525 VideoFrameRate 60 VideoBitRate 512 VideoBufferSize 512 NoAudio AVOptionVideo flags +global_header StartSendOnKey EDIT: Here is my CLI ffmpeg -probesize 1000M -framerate 60 -video_size 1680x1050 -f x11grab -i :0.0 -f alsa -i default -c:a aac -vf format=yuv420p (...)
18:24
H264 codec encode, decode and write to file - Алекс Аникей Newest 'ffmpeg' Questions - Stack Overflow

I try to use ffmpeg and h264 codec to translate the video in realtime. But at the state of decoding encoded frame, I get some "bad" image. Init encoder and decoder: VCSession *vc_new_x264(Logger *log, ToxAV *av, uint32_t friend_number, toxav_video_receive_frame_cb *cb, void *cb_data, VCSession *vc) // ------ ffmpeg encoder ------ AVCodec *codec2 = NULL; vc->h264_encoder_ctx = NULL;//AVCodecContext type codec2 = NULL; avcodec_register_all(); codec2 = avcodec_find_encoder(AV_CODEC_ID_H264); if (codec2 == NULL) (...) --
18:00
How can I send a virtual camera to Genymotion or Android Studio Emulator in Ubuntu? - ykasur Newest 'ffmpeg' Questions - Stack Overflow

I created a virtual camera using v4l2loopback and ffmpeg. The command I use for ffmpeg is: ffmpeg -re -l oop 1 -i vin.png -vf format=yuv420p -f v4l2 /dev/video2 vin.png is the image I want to stream to the webcam and /dev/video2 is the virtual webcam I created with v4l2loopback. The virtual webcam works and I can see it e.g. with onlinemicetest.com/webcam-test. I'm using the Genymotion emulator with the newest Android API (I tried 7.0, 8.1 and 10.0) on Ubuntu 20.40. Genymotion detects the virtual camera but only displays a dummy image: Wrong dummy Image from (...) -- onlinemicetest.com/webcam-test, Wrong dummy Image from Genymotion
16:49
FFMPEG script to add 1 sec fade in the start and end of every clip - BitBit Newest 'ffmpeg' Questions - Stack Overflow

I am making a music mix with more than 10 audio files. For this, I am trying to add an audio fade of 1 sec in the start and end of every single audio clip used for my mix when joining those audio clips. Can someone please help me with the ffmpeg program for this?
16:21
Is it possible to adjust position of gdigrab recording region during recording? - adelima Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg for recording video from defined desktop region by starting ffmpeg.exe as process with arguments like so: public static void StartRecording(Video v) string outPath = Path.Combine(Application.StartupPath, "rec", $"v.FileName.mkv"); v.FFMPEG = new Process StartInfo = new ProcessStartInfo() Arguments = $"-hide_banner -y -thread_queue_size 512 -f gdigrab -offset_x v.Bounds.X -offset_y v.Bounds.Y -video_size v.Bounds.Widthxv.Bounds.Height -show_region 0 -i desktop -vf \\"scale=trunc(iw/2)*2:trunc(ih/2)*2\\" -c:v libx264 -preset ultrafast -crf 18 (...)
14:43
/dev/video0: Invalid argument - KPB Newest 'ffmpeg' Questions - Stack Overflow

we are trying to connect GoPro Hero 5 black to raspberri pi-4 using HDMI to CSI2 convertor. but we are facing a problem, like whenever we try to stream using ffmpeg or any live video software we are unable to connect the device and it give the following error [video4linux2, v4l2 ⓐ 0x15ce430] ioctl(VIDIOC_STREAMON):Invalid argument /dev/video0: Invalid argument we tried cat /dev/video0 throws the same error. on the other hand we have the another camera which works perfectly! Any inputs will be (...)
14:41
C# File.Move creates an empty file and IO exception - Maddie Newest 'ffmpeg' Questions - Stack Overflow

My code processes a video file (using ffmpeg) and creates different qualities (360p, 480p, etc) and formats (mp4 and HLS) of that. After creating these files, I move all of them to another drive (a network location). my code looks Like this: var files = Directory.GetFiles(srcFolder); string filename, destFile = string.Empty, srcFile = string.Empty; try for (int i = 0; i This process works fine most of the time, but for some files, I get an IO exception every time I run this process. System.IO.IOException: The file exists. at (...)
14:25
PHP ffmpeg not found - heisenberg Newest 'ffmpeg' Questions - Stack Overflow

so I already browse all the forum but I still get error "sh: 1: /usr/bin/ffmpeg: not found". If I run ffmpeg from terminal it works just fine and can do convert video without problem, but if I use PHP exec or shell_exec, the return always ffmpeg not found. this is my code : $cmd = "/usr/bin/ffmpeg"; $run = exec($cmd." -i 'linkvideo.m3u8' -bsf:a aac_adtstoasc -vcodec copy -c copy -crf 50 /test_stream/newfile.mp4 2>&1"); var_dump($run); if I run which ffmpeg or whereis ffmpeg from terminal it will return /usr/bin/ffmpeg, but if I (...)
13:30
how to trim video in laravel using ffmpeg - user14698698 Newest 'ffmpeg' Questions - Stack Overflow

so i just installed ffmpeg package in my laravel project using composer require pbmedia/laravel-ffmpeg but i don't know how can i use this to achieve my goal, here in this code where i am getting the array of multiple videos in controller public funcion store(Request $request) $videoArray=$request->file('videos'); ... ... which is going further to store but i want trim each video in this array like every video which is more 1 minute in length should be trim in two or more. please help me i am new in (...)
12:35
Audio/Video de-synchronisation when playing a video on Chrome - Sonia Seddiki Newest 'ffmpeg' Questions - Stack Overflow

I've been recently working on a project where I try to play a "custom-made" video on an HTML5 player. By custom-made, I mean I concatenate a bunch of videos together using FFmpeg concat demuxer, each of them having the same properties (FPS, bitrate, resolution, timebase, etc). Now, I'm having a few issues regarding audio/video synchronisation, with a twist: it does not happen on every video player. The video is perfectly synchronised when read on Firefox, but not on Chrome. It is synchronised when read on a "local" video player like VLC. I assume it has to do with how (...) -- FFmpeg concat demuxer
12:24
watermark on videos like tiktok watermark using ffmpeg - Pythonsguru Newest 'ffmpeg' Questions - Stack Overflow

I want to add watermark on video using ffmpeg like tiktok videos, means watermark with logo name and user id and with reflecting diagonally each 5 sec or same interval of time, for simple watermark I am using following command.Please help ffmpeg -i video.mp4 -i watermark.png -filter_complex "overlay=5:5" out.mp4
12:06
Manifest error pops up when trying to download certain videos for discord.py music bot - bork Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to make a discord music bot. I'm using youtube-dl to retrieve the info and ffmpeg to play the audio out. My bot has no problems downloading videos and everything is working fine. But when I tried downloading certain videos, this error popped up: [dash ⓐ 0x7fe45a801200] Manifest too large: 65055 https://manifest.googlevideo.com/api/manifest/dash/expire/1606336104/ei/CGq-X4G6Htauz7sPrZuCsA8/ip/14.192.212.39/id/64a943d43b8f53eb/source/youtube/requiressl/yes/playback_host/r5---sn-h5mpn-30ae.googlevideo.com/mh/Go/mm/31%2C29/mn/sn-h5mpn-30ae%2Csn-30a7rn7l/ms/au%2Crdu/mv/
09:07
only last four entries of .ts files found in out.m3u8 file when I am using ffmpeg to convert mp4 to m3u8 format why - Pythonsguru Newest 'ffmpeg' Questions - Stack Overflow

When I am using following command to convert .mp4 15 second video to .m3u8 format with hls_time 1 it convert in 15 .ts files using ffmpeg after successful conversation but when open the out.m3u8 file I Found only last four .ts file in out.m3u8 instead of 15 .ts files entries, please help what should I do for getting all 15 files in out.m3u8 ffmpeg -i video.mp4 -c:v h264 -flags +cgop -g 30 -hls_time 1 out.m3u8
05:58
error: opus in MP4 support is experimental, add '-strict -2' if you want to use it - ScipioAfricanus Newest 'ffmpeg' Questions - Stack Overflow

I am trying to convert some MKV to MP4 with ffmpeg, and I keep getting the error below. Any thoughts? I have installed ffmpeg and installed: sudo apt install -y libopus-dev libmp3lame-dev libfdk-aac-dev libvpx-dev libx264-dev yasm libass-dev libtheora-dev libvorbis-dev mercurial cmake Command I ran with output: ffmpeg -i 'video.mkv' -codec copy 'video.mp4' -strict -2 -y ffmpeg version 4.0.2-2 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 8 (Ubuntu 8.2.0-7ubuntu1) configuration: --prefix=/usr --extra-version=2 (...)
05:49
Java Use OpenCV with FFMPEG for getting Videocapture Webcam Images - marcel Newest 'ffmpeg' Questions - Stack Overflow

I'am using OpenCV for quite some time to grap images from my USB Cam with DirectShow. webcam.open(selectedCam + Videoio.CAP_DSHOW) I'am using the pre-build opencv library directly from the openCV release site. Now I like to use ffmepg as Video I/O API Backend. If I change Videoio.CAP to FFMPEG the webcam can't be opened. webcam.open(selectedCam + Videoio.CAP_FFMPEG) In my project I include the opencv-450.jar and the nativ library from the java folder. I can't find an example or have not the right experience what to change so (...)
05:41
Unable to record mediasoup producer using FFmpeg on real server - Sarvesh Patil Newest 'ffmpeg' Questions - Stack Overflow

I have built a nice app in react native for audio calling, many thanks to MediaSoup!! To take it to next level, I need to record some of my calls. I used this tutorial for reference: mediasoup recording demo I followed the FFmpeg way and have reached a point where I have created a plainTransport with router.createPlainTransport( // No RTP will be received from the remote side comedia: false, // FFmpeg and GStreamer don't support RTP/RTCP multiplexing ("a=rtcp-mux" in SDP) rtcpMux: false, listenIp: ip:"0.0.0.0", (...) -- mediasoup recording demo
02:55
Android FFmpeg : Undefined references to atof, log2 & log2f - Quantum_Programmer Newest 'ffmpeg' Questions - Stack Overflow

I am trying to link to FFmpeg built for android using android-ndk-r15c. I built this by downloading FFmpeg source that is latest ffmpeg-3.3.4. Following are my linker list: -lavformat -lavcodec -lswscale -lavutil -lavfilter -lswresample -lavdevice -lpostproc I get the following errors complaining libavformat/hls.c:783: error: undefined reference to 'atof' libavcodec/ffv1enc.c:146: error: undefined reference to 'log2' libavcodec/imc.c:428: error: undefined reference to 'log2f' Following are my (...) -- FFmpeg source
02:49
Streaming H.264 video from Kurento via ffmpeg to RTMP server - Joe Lin Newest 'ffmpeg' Questions - Stack Overflow

I'm streaming H.264 video from Kurento to a RTMP server. I started ffmpeg command to receive the stream and forward the stream to the RTMP server. But I'm getting error when running ffmpeg command. Here's the sdp: v=0 o=- 0 0 IN IP4 127.0.0.1 s=No Name c=IN IP4 127.0.0.1 t=0 0 a=tool:libavformat 58.29.100 m=video 55000 RTP/AVP 96 b=AS:200 a=rtpmap:96 H264/90000 a=recvonly m=audio 55002 RTP/AVP 111 a=rtpmap:111 opus/48000/2 a=fmtp:111 minptime=10;useinbandfec=1 a=recvonly Here's the ffmpeg (...)
03:42
ffmpeg snap permission denied accessing encrypted folder - Eric M Newest 'ffmpeg' Questions - Stack Overflow

I'm on Ubuntu 18.04 and have most of my home folder in an EncFS filesystem. I have ffmpeg installed as a snap and it won't access files in the EncFS filesystem. cannot open path of the current working directory: Permission denied It also had the same error when accessing any folder not part of /home partition (for example on a second mounted harddrive) and also smb shares. I tried adding the removable-media connection but no joy. In fact I tried adding every connection. I do have a workaround for the other harddrives and the smb share by installing in --devmode (...)
03:35
ffmpeg downloading parts of Youtube videos but for some of them they have a black screen for a few seconds - sathu-beep Newest 'ffmpeg' Questions - Stack Overflow

So im using ffmpeg to download some youtube videos with specific start and stop times. My code looks like os.system("ffmpeg -i $(youtube-dl --no-check-certificate -f 18 --get-url %s) -ss %s -to %s -c:v copy -c:a copy %s"% (l, y, z, w)) where the variables would all be the name of the file, the url, and the start and stop times. Some of the vidoes come out just fine, others have a black screen and only a portion of the video, and a very few amount have just audio files. My time is formated as x.y where x would be the seconds and y would be the milliseconds. Is this the issue so I need to (...)
02:10
Finding project / solution files to build libbluray - xcvbnm Newest 'ffmpeg' Questions - Stack Overflow

I am trying to build libbluray from http://git.1f0.de/gitweb?p=libbluray.git;a=summary;js=1. The description says that it is a "libbluray patched to compiler under Windows with MSVC", but I can't find any vcxproj / sln files in their source code (take, for example, a ZIP file at http://git.1f0.de/gitweb?p=libbluray.git;a=snapshot;h=ebde4c9cedb2088eb7c4ee9ef1a15e74b5d17f3a;sf=zip;js=1). Without a project or solution file, how do I plug it into MSVC? Am I missing something (...) -- http://git.1f0.de/gitweb?p=libbluray.git;a=summary;js=1, http://git.1f0.de/gitweb?p=libbluray.git;a=snapshot;h=ebde4c9cedb2088eb7c4ee9ef1a15e74b5d17f3a;sf=zip;js=1
00:52
Batch script to convert, youtube-dl webm file to mp3 with ffmpeg - GR412 Newest 'ffmpeg' Questions - Stack Overflow

I'm using youtube-dl to extract the best possible audio quality from youtube videos. However the best quality audio usually turns out to be the webm format, which isn't useful. I would like to write a batch script that converts the webm file to an mp3 with ffmpeg. I've already tried using this guide on reddit to do it, but it doesn't seem to work. It appears to create an empty mp3 file that displays an error when i try to play it and the meta data is also completly blank. Here is the batch script: for %%a in ("Downloaded\\*.*") do (...) -- youtube-dl, this guide,

29 November

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

22:43
Trim audio file using python ffmpeg - Mehrudin Sabani Newest 'ffmpeg' Questions - Stack Overflow

I am trying to simply input an audio file, trim the first 5 seconds and than output it into a directory. I am using jupyter notebook. This is what i did: import ffmpeg audio_input = ffmpeg.input('input.mp3') audio_cut = audio_input.audio.filter('atrim', duration=5) audio_output = ffmpeg.output(audio_cut, 'out.mp3') I get no errors, but no results as well. I also noticed even if i enter a non-existent file name or path i still don't get any (...)
22:33
Error while downloading video stream with streamlink + ffmpeg: Pipe copy aborted error - beta Newest 'ffmpeg' Questions - Stack Overflow

I am trying to download a big video with the following command with Streamlink. Streamlink in the background uses ffmpeg. So what I get is actually an ffmpeg error. This is the command I use: streamlink --loglevel debug --hls-live-restart -o test.mp4 "https://aivottjab-a.akamaihd.net/IAD/jab-assets/jab-prod-iad/out/v1/732334e942a4465b8af9b21077d4e61d/cenc-083bb0.mpd?encoding=segmentBase&amznDtid=AOAGZA014O5RE" best This is the error I get after ~26GB are downloaded. [19:48:27,437][stream.dash][debug] Download of segment: (...)
22:01
ffmpeg error MPEG-1/2 does not support 3/1 fps - 0 day Newest 'ffmpeg' Questions - Stack Overflow

Im trying to broadcast my desktop to web page via ffserver but Im getting this error MPEG-1/2 does not support 3/1 fps Error initializing output stream 0:1 -- Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height Here is my cli ffmpeg -probesize 1000M -framerate 30 -video_size 1680x1050 -f x11grab -i :0.0 -f alsa -i default -c:a aac -vf format=yuv420p http://localhost:8090/feed1.ffm And here is whole log ffmpeg -probesize 1000M -framerate 30 -video_size 1680x1050 -f x11grab -i :0.0 -f (...)
21:44
ffmpeg scale 4k video and add subtitles - goodkid38 Newest 'ffmpeg' Questions - Stack Overflow

I am having trouble scaling video from 4k to 1080 while still retaining the video sub titles. These subtitles are PGS based and therefore need to be baked into the output video. In order to scale the video I am using ffmpeg with a filter_complex like so: '-filter_complex', `[0:v][0:s:randomSubtitleHere]scale=1920:1080[scaled];[scaled][0:s:0]overlay[v]`, '-map', '[v]', '-map', `0:a:$movieTitle['audioSelect']`, This will give me the video at 1080, but it i still am not seeing the subtitles I have (...)
20:51
When I run ffmpeg Im getting "output file #0 does not contain any stream" [duplicate] - 0 day Newest 'ffmpeg' Questions - Stack Overflow

Im trying to feed live stream from ffmpeg to ffserver but Im getting this error libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libavresample 3. 7. 0 / 3. 7. 0 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 Input #0, x11grab, from ':0.0': Duration: N/A, start: 1606657336.654899, bitrate: N/A Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), (...)
20:33
Overlaying a green screen intro over video using FFMPEG - BitBit Newest 'ffmpeg' Questions - Stack Overflow

Can someone please help me with a program that overlays a green screen intro in the start of the video. Basically I need help with a FFMPEG program that overlays a green screen video which is the intro of the video, so the first few seconds are with the green screen overlay and then the normal video continues.
20:32
Python opencv ffmpeg threading exit functions - scacchi Newest 'ffmpeg' Questions - Stack Overflow

i'm trying to finish the audio/video recording loop by pressing a key (or by other event), if i use the simple time.sleep() in the main loop work perfectly, after 5 second stop video and create file, if i use the function keyboard_pressed() doesnt execute stop_AVrecording() correctly and file_manager(). What's im doing wrong ? Thanks in advance from __future__ import print_function, division import numpy as np import cv2 import pyaudio import wave import threading import time import subprocess import os import (...)
20:23
Loop movie and mix with audio by ffmpeg - whitebear Newest 'ffmpeg' Questions - Stack Overflow

I have a movie file and an audio file with different length. Audio file is longer than video file. I want to loop video and mix with audio, then set length same as audio file. ffmpeg -i "Pentagon_VJ_background_loop.mp4" -stream_loop -1 -t 60 -i "Out1.wav" -map 0:0 -map 1:0 output.mp4 With this I have -stream_loop -1 but movie doesn't loop. and have no way to set the length to audio file(I use -t 60 instead). Does anyone (...)
20:22
How I can I add audio to my ffmpeg stream - 0 day Newest 'ffmpeg' Questions - Stack Overflow

I want to add audio to my ffmpeg cli bellow ffmpeg -framerate 25 -video_size 1920x1080 -f x11grab -i :0.0 -vf format=yuv420p http://localhost:8080/feed.ffm I tried -acodec libmp3lame, -c:a libmp3lame but it does not seam to work
19:59
FFmpeg encoding aac audio, encoded file can not be played - cs guy Newest 'ffmpeg' Questions - Stack Overflow

Sorry for the long code but thats just how FFmpeg works. I am trying to encodea aac audio. Example of MP2 here. I followed this documentation. I encode the audio with the code below by calling startEncoding and after 2 seconds I call stopEncoding. Everything seems to work fine, but sometimes the output file is 0 bytes, even if it has some size for example I get an file with 462KB size but the problem is I can not open or play it. I dont know why. I must be doing something wrong in the code. I have been trying to fix this for the last 3 hours but no luck. No matter what I do the file (...) -- Example of MP2 here
19:06
Problem with ffmpeg and name change while loading on server - Pajtim Newest 'ffmpeg' Questions - Stack Overflow

I am testing a code in php / ffmpeg it is watermark. It works very well after uploading the video but the problem is that the video should only be with an "input.mp4" name. I have set the path where the video should be saved and the name of each video is changed move_uploaded_file($_FILES["video"]["tmp_name"], "./" . ('input.mp4')); after it is uploaded to "input.mp4" but even this did not solve the problem. So it only works when you upload the video from the beginning named input.mp4. Is there an option ffmpeg to accept each name as input when uploading video (...)
18:49
Fluent-ffmpeg stream .flv after merging .gif with .mp3 - Ugo Newest 'ffmpeg' Questions - Stack Overflow

I want to stream a .flv video which is the result of merging a .gif (in endless loop) with a .mp3 audio. By serving the video alone, everything works smoothly, but once I add the audio channel I get this error: ffmpeg exited with code 1: /test.mp3: Invalid argument Here my code (out of my express server): app.get('/stream/1', function (req, res) res.contentType('flv'); ffmpeg() .input('./test.gif') .inputOptions([`-stream_loop -1`]) .input('./test.mp3') .fps(24) .format('flv') (...)
17:49
FFmpeg - Save %pts\\:hms in %variable% for saving as environment variable - cmd_kevin Newest 'ffmpeg' Questions - Stack Overflow

After closing a video in ffplay I want that the last timestamp will saved as a value of an environment variable. To show the current timestamp in the playback window, I can use: ffplay -vf "drawtext=text='%pts\\:hms'" input.mp4 So there is a variable (%pts\\:hms) for my purposes. To change the value of a variable (in my case %variable01%), I used: SET variable01=value To change the environment variable with %variable01%, I used: SETX environment_variable_01 %variable01%. My problem is that I can't use %pts\\:hms to define %variable01% (...)
16:57
Why can't capture video stream from ip camera? - showkey Newest 'ffmpeg' Questions - Stack Overflow

VLC can open the video stream with following rtsp url: rtsp://admin:xxxxxxⓐ192.168.31.252:554/cam/realmonitor?channel=1&subtype=0 I want to capture the rtsp stream with ffmpeg: rtsp_url=rtsp://admin:xxxxxxⓐ192.168.31.252:554/cam/realmonitor?channel=1&subtype=0 ffmpeg -i $rtsp_url -vcodec copy -acodec copy /tmp/test.mkv Why can't capture video stream from ip camera?
13:55
FFmpeg package for Apple Silicon - gil_mo Newest 'ffmpeg' Questions - Stack Overflow

I'm in the process of porting all of our code to Apple M1 (ARM), and some of our products use FFmpeg. Are there any library packages by FFmpeg that are built for the Apple Silicon M1, and where can I find them?
02:54
FFmpeg trim filter fails to use sexagisimal time specification and the output stream is empty. Is it a bug and is there a fix? - Link-akro Newest 'ffmpeg' Questions - Stack Overflow

With ffmpeg the trim filter (or its audio variant atrim) malfunctions whenever i try to write a sexagesimal time specification for the boundaries or duration parameters of the filter : the result is always an empty stream. According to the documentation i already linked, which was generated on November 26, 2020 so far, the time duration specification should be supported. start, end, and duration are expressed as time duration specifications Quote of the spec. [-][HH:]MM:SS[.m...] [-]S+[.m...][s|ms|us] I am working in a (...) -- trim filter, sexagesimal time specification, setpts filter, select

28 November

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

19:37
ffmpeg commands to transcode any format video into different resolutions? [closed] - Priyanshu Roy Newest 'ffmpeg' Questions - Stack Overflow

How to trancode any format video into different resolutions like YouTube with the help of ffmepg. I need best commands to do that Reduce video size, change resolutions and video-audio bits too. Qualitys are 1080p 720p 480p 360p 240p And 144p Output will be in mp4 h.264/AVC video formats.
05:53
Need Guidance to develop Video Editing App like Inshot [closed] - Vinesh Chauhan Newest 'ffmpeg' Questions - Stack Overflow

i need guidance to develop video editing app similer to inshot, kinemaster, etc. i have seen too many apps and found that they are using aliyun video SDK to Do so.and i found this sdk is little costly for Statup guys. so i need guidance to start developing this type of video editing app. i also got that some of apps are develop so files to execute c or cpp programs for video editing modules.i am usig currently ffmpeg to do some normal editing functions like add stickers on video with time duration, add multiple musics,aspect ration manipulation, fast forward, slowmotion.and Mp4Composer to (...) --
21:42
Nginx RTMP module to generate HLS - Joe Lin Newest 'ffmpeg' Questions - Stack Overflow

I'm streaming an audio stream with opus codec from Kurento via ffmpeg to nginx-rtmp-module. I'm using the below command to stream to nginx-rtmp: ffmpeg -protocol_whitelist file,udp,rtp -i test-audio.sdp -c:a libopus -f opus rtmp:///live/ I see no error on the ffmpeg side. But there's no m3u8 file being generated. But I noticed the following in the nginx log: 2020/11/23 23:19:31 [info] 95#0: *8 connect: app='live' args='' flashver='FMLE/3.0 (compatible; Lavf57.83' swf_url='' (...)
21:24
"Cannot read property 'url' of undefined" even though it's already defined - Levi Stancz Newest 'ffmpeg' Questions - Stack Overflow

I'm making a Discord music Bot and I'm having trouble with an error saying TypeError: Cannot read property 'url' of undefined I tried console logging it and it showed me the url, so I don't understand what is the problem with my code. Here's my code: //musicBOT const Discord = require('discord.js'); const client = new Discord.Client(); const ytdl = require('ytdl-core'); const mcPrefix = '.'; const queue = new Map(); client.on('ready', () => console.log('Music (...)
20:09
ffmpeg stream desktop instead -i /dev/video0 - Vido Newest 'ffmpeg' Questions - Stack Overflow

How can I set ffmpeg to stream desktop instead web cam -i /dev/video0 here is example command that I used $ ffmpeg -f v4l2 -i /dev/video0 http://localhost:8080/feed.ffm
19:58
Join videos side by side - Sudipta B Newest 'ffmpeg' Questions - Stack Overflow

I need to join two webm videos side-by-side, I've been using the following ffmpeg command to join them: ffmpeg -i /client.webm -i /client2.webm -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" -map "[v]" -map "[a]" -ac 2 /combined.webm However, I have 2 issues this doesn't seem to work properly if videos are of different dimensions or durations, moreover it seems extremely slow and resource-intensive. I'm eager for any solutions, and I'd love to know if there are any better command-line (...)
19:57
Raspberry Pi cannot connect to IP camera, while Windows PC can? - gf000 Newest 'ffmpeg' Questions - Stack Overflow

I have an IP camera (Provision ISR, DI-320IPS-VF, 2MP IR Vari-Focal Dome IP Camera). When I connect it to my router (it is a 10 or 12 years old TP-LINK TL-WR1043ND), it will immediately show up in "IP Manager" (this is a program by the manufacturer) on my Windows PC. If I double click on the camera's row, Internet Explorer opens up, and everything is working fine. On the same Windows PC, if I open VLC Media Player, and paste this URL: rtsp://username:passwordⓐlocalipaddress:554/profile1 It works fine. I have also a "Raspberry Pi 4 model B 4 GB RAM", which is connected to the (...)
18:05
Flutter FFMPEG - Getting the same waveform output image for different audio files - mtkguy Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to generate waveform images for different audio files but no matter what i do, i keep getting the same waveform image for every audio. The first audio file returns the correct waveform image but subsequent files also return that same image as output. Yes, i already set the overwrite flag to my command but it doesn't change anything. Here's my code. class RecordController extends GetxController Rx cachedAudioFile = Rx(); RxString waveFormImagePath = "".obs; Future getWaveForm(String url) async final FlutterFFmpeg _flutterFFmpeg = (...)
17:18
Encoding raw video data using C++ - Lakshya Newest 'ffmpeg' Questions - Stack Overflow

I have raw video data ( array of unsigned chars ). Which is data to represent one frame. I have many frames like this.(Actually these are the frames of a video which I have already decoded.) I would like to encode it to H264/H265 or others and then I would like to stream it using RTSP server. How can I encode it using Gstreamer or FFMPEG or something else. Programming language should be C++. I looked at Gstreamer Frame object and VideoMetaData object and similar ones but I could not understand. Can somebody give some example of encoding a frame ( array of (...)
16:22
HEVC/H.265 interlaced format support in ffmpeg or VLC - Ernestas Gruodis Newest 'ffmpeg' Questions - Stack Overflow

"Music Box Russia" channel over satellite transmits in HEVC 1920x1080 25fps interlaced - and after recording VLC recognizes file as 50 fps, and resolution 1920x540 - half a height. But on satellite tuner the player works fine - it plays a file as 1920x1080 25fps... When we can expect support for HEVC/H.265 interlaced? Here is recorded file (Garry Grey & Eva Miller). Also - a lot of lost frames in VLC player statistics.. -- Here
15:11
How can I resize an overlay image with ffmpeg? - Andrei Dascalu Newest 'ffmpeg' Questions - Stack Overflow

I am trying to add an overlay to a video using the following command ffmpeg -y -i "$videoPath" -i "$overlayPath" -filter_complex "[0:v] [1:v] overlay=$overlayPosition" -pix_fmt yuv420p -c:a copy "$outputPath" However, I would like to be able to resize the overlay I am about to apply to some arbitrary resolution (no care for keeping proportions). However, although I followed a couple of similar solutions from SO (like FFMPEG - How to resize an image overlay?), I am not quite sute about the meaning of the parameters or what I need to add it in my case. I would need to (...)
12:24
write text for each frame from txt file onto video - csch Newest 'ffmpeg' Questions - Stack Overflow

I have a txt file with annotations for each frame in my video (so "number of rows" == "number of frames"). Now I would like to write the text of each row to its corresponding frame in the video (into some corner) – is there a way to do that using ffmpeg (or a similar free tool)?
06:39
Combine two ffmpeg commands to produce one audio output - Martynas Jurkus Newest 'ffmpeg' Questions - Stack Overflow

I want to use libopus to augment my audio using this decoder. I can use it like this: ffmpeg -i input.wav -c:a libopus -b:a 5.5k -ar 8000 output_550.ogg ffmpeg -i output_550.ogg -ar 8000 output_550_ogg.wav But I can't convert directly to wav - I get errors like these: [wav ⓐ 0x7fa9ac808800] opus codec not supported in WAVE format Could not write header for output file #0 (incorrect codec parameters ?): Function not implemented Error initializing output stream 0:0 -- How could I combine these to to get wav with a single (...)
05:57
PyArcade (Pyglet) python3 Help needed - F4zi Newest 'ffmpeg' Questions - Stack Overflow

Python 3.8.1 using python-arcade and linux manjaro os This project is a multiplayer game built with python arcade I get these errors while running : class Client(arcade.Window): def __init__( self, width: int, height: int, title: str = 'Immortals' ) -> None: super().__init__(width, height, title=title) Traceback (most recent call last): File "/home/iddos/Documents/Github/Python/immortals/immortals/main.py", line 42, in main(**config['resolution']) File (...)
05:43
Undefined symbol: ___darwin_check_fd_set_overflow - iOS Newest 'ffmpeg' Questions - Stack Overflow

I'm getting this error when I try to run my project. Undefined symbol: ___darwin_check_fd_set_overflow Here, I'm included pod 'mobile-ffmpeg-full', '4.3.2' this frame work for video streaming. Complete error: Undefined symbols for architecture arm64: "___darwin_check_fd_set_overflow", referenced from: _read_key in mobileffmpeg(libmobileffmpeg_la-fftools_ffmpeg.o) _xmlNanoFTPCheckResponse in libxml2(nanoftp.o) _xmlNanoFTPCloseConnection in libxml2(nanoftp.o) _xmlNanoFTPList in libxml2(nanoftp.o) (...) -- , https://github.com/tanersener/mobile-ffmpeg
00:04
stop ffmpeg gently (to allow it to finish writing mp4 file) when streaming from udp - ierdna Newest 'ffmpeg' Questions - Stack Overflow

i'm trying to receive a udp stream on a server and write it to an mp4 file. this works fine: ffmpeg -i udp://127.0.0.1:12345 -codec copy out.mp4 if i press CTRL+C (or send SIGINT to the process) the ffmpeg quits and i have a working mp4 file. however, if the data stops coming in on the udp port (e.g. after 10 minutes of streaming) and i try to stop ffmpeg it requires 2 interrupt signals at which point ffmpeg exits abruptly and results in an unplayable mp4 file. does anyone know how to prevent ffmpeg from hanging when there's no (...)

27 November

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

21:59
FFMPEG build with cmake on windows - BloodyFerret Newest 'ffmpeg' Questions - Stack Overflow

I 'm trying to build project with ffmpeg libraries by Cmake. ffmpeg is installed correctly. When i type ffmpeg on cmd i have: ffmpeg version N-99488-gbc43588a71 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9.3-win32 (GCC) 20200320 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-debug --enable-iconv --enable-zlib --enable-libxml2 --enable-libfreetype (...)
21:24
FFMPEG & ScrollMagic: Safari bug - gusv7 Newest 'ffmpeg' Questions - Stack Overflow

I got this site where video playback is linked to scroll position. I'm using a FFMPEG-encoded .mp4 file and ScrollMagic to handle the scroll event. It works perfectly on Chrome, Opera and FF, but crashes on Safari: the animation is delayed and the video disappears once it reaches the end of the playback on Safari OS. It also doesn't show on iOS, not in Safari or Chrome... :/ Here's the markup: The JS: // Shaka Animation const intro = document.querySelector('.shaka'); const (...)
21:00
FFmpeg: Looping an video/audio stream to YouTube Live - Claus Newest 'ffmpeg' Questions - Stack Overflow

I'm using this script to stream a 30s .mp4 video file with a 2min audio track in .mp3 format: #! /bin/bash VBR="1500k" FPS="30" QUAL="ultrafast" YOUTUBE_URL=" rtmp://a.rtmp.youtube.com/live2" YOUTUBE_KEY="**********" VIDEO_SOURCE="test_video_4.mp4" AUDIO_SOURCE="test_audio_3.mp3" AUDIO_ENCODER="aac" ffmpeg \\ -stream_loop -1 \\ -re \\ -i "$VIDEO_SOURCE" \\ -thread_queue_size 512 \\ -i "$AUDIO_SOURCE" \\ -c:v libx264 -preset $QUAL -r $FPS -g $(($FPS *2)) -b:v $VBR \\ -c:a $AUDIO_ENCODER -threads 6 -ar 44100 (...) -- http://www.videolan.org/x264.html
20:34
Flutter record front facing camera at exact same time as playing video - xceed Newest 'ffmpeg' Questions - Stack Overflow

I've been playing around with Flutter and trying to get it so I can record the front facing camera (using the camera plugin [https://pub.dev/packages/camera]) as well as playing a video to the user (using the video_player plugin [https://pub.dev/packages/video_player]). Next I use ffmpeg to horizontally stack the videos together. This all works fine but when I play back the final output there is a slight delay when listening to the audio. I'm calling Future.wait([cameraController.startVideoRecording(filePath), videoController.play()]); but there is a slight delay in these (...)
19:39
FFmpeg HLS select streams and only retrieve their data - M.S. Newest 'ffmpeg' Questions - Stack Overflow

Opening a HLS stream using avformat_open_input retrieves data from all streams and I would like to only retrieve data from some of them. Is that possible? Consider the following MWE: #include int main(int argc, char **argv) AVFormatContext *inFmtCtx = NULL; AVPacket packet; const char *inUrl; int ret; if (argc Using the example HLS url "http://mcdn.daserste.de/daserste/de/master.m3u8" (might be geolocked), the printf returns values between 0 and 9, indicating that all 10 streams (5 video, 5 audio) are retrieved. Of course, one (...)
19:36
ffmpeg change timecode metadata inside video file - virtualsets Newest 'ffmpeg' Questions - Stack Overflow

I have problems to change timecode inside metadata of a video file "mov" ffmpeg -i input.mov -ss 0 -map 0 -acodec copy -vcodec copy -timecode 01:20:10:00 -metadata:s:2:0 timecode=01:20:10:00 -metadata:s:1:0 timecode=01:20:10:00 -metadata:s:0:2 -metadata:s:0:2 timecode=01:10:10:00 output.mov I need to put my own timecode to the file but this command not works. The console give me: mov ⓐ 00000225287fdc00] You requested a copy of the original timecode track so timecode metadata are now ignored Output #0, mov, to 'convert_A019_02230134_C186.mov': (...)
19:07
Correct settings for streaming audio and video to YouTube - Claus Newest 'ffmpeg' Questions - Stack Overflow

I'm using this script to stream an .mp4 video file with a sound track in .mp3 format: ffmpeg \\ -re \\ -i "$VIDEO_SOURCE" \\ -thread_queue_size 512 \\ -i "$AUDIO_SOURCE" \\ -c:v libx264 -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS *2)) -b:v $VBR \\ -c:a $AUDIO_ENCODER -threads 6 -ar 44100 -b:a 128k -bufsize 512k -pix_fmt yuv420p \\ -f flv $YOUTUBE_URL/$YOUTUBE_KEY the video gets displayed correctly on the channel but I cannot get any audio played. No error message on the console. What am I (...)
15:54
Why images are combined (ffmpeg)? - Jin X Newest 'ffmpeg' Questions - Stack Overflow

I want to create video from images (one image per frame). ffmpeg -framerate 21.533 -i %d.bmp -i z.wav -r 21.533 -t 120 -map 0:v:0 -map 1:a:0 -c:v libx265 -c:a aac -b:a 128k z.mp4 When I watch resulting video I see (at least at the end of video) that frames are combined with each other (2 images on each frame overlaps with different transparency ratio). I seems like when source and destination frame rate mismatch. I can remove -framerate and -r options but result will be the same (with 25 fps). What's the problem? How to fix (...)
15:03
Save video to disk from WebRTC MediaStream in Node - SAGBO Aimé Newest 'ffmpeg' Questions - Stack Overflow

I'm building an app where the user can connect to the server through a WebRTC (I'm using simple-peer library both server-side and client-side to set the peer-to-peer connection). Once the client and the server are connected, the client app stream the user camera and micro to the server. Now, I want to save the streamed data to the filesystem server-side as an MP4 video file. I hear about ffmpeg and fluent-ffmpeg to achieve this but i don't know how to use them. Server side code to set up the peer connection const Peer = (...)
13:53
Crossfade Animation with multiple Images using Ffmpeg - Vivek Thummar Newest 'ffmpeg' Questions - Stack Overflow

I'm creating video with Multiple images using Ffmpeg and i'm referencing given link - (Remember most important thing is All the images have different sizes) https://superuser.com/a/834035/1243959 Now First of all i'm creating video with fade in/out animation and for that i'm using 3rd code with title For input images with varying or arbitrary sizes and it works well - ffmpeg \\ -loop 1 -t 5 -i input0.png \\ -loop 1 -t 5 -i input1.png \\ -loop 1 -t 5 -i input2.png \\ -loop 1 -t 5 -i input3.png \\ -loop 1 -t 5 -i input4.png (...)
12:12
Add audios according to their timestamps with ffmpeg - user14706760 Newest 'ffmpeg' Questions - Stack Overflow

I tried this: ffmpeg -i first.mka -i second.mka -i third.mka -i fourth.mka -filter_complex "[1]adelay=184000|184000[b]; [2]adelay=360000|360000[c]; [3]adelay=962000|962000[d]; [0][b][c][d]amix=4" merged.mka But it turned out that amix scales each input's volume by 1/n where n = no. of active inputs. A normalization workaround is unacceptable in my case because I have hundreds of inputs. Is the any alternative way to add audio files according to their (...)
11:57
Downmix mono and stereo tracks to stereo with ffmpeg - user14706760 Newest 'ffmpeg' Questions - Stack Overflow

I want to make an audio downmix that a video editor does by default during rendering with ffmpeg. I have 1 mono input and 2 stereo inputs I'd like to mix them to final stereo track keeping the loudness of every track. I tried amix but it changes the loudness: ffmpeg -i mono.wav -i stereo_1.wav -i stereo_2.wav -filter_complex amix=inputs=3:duration=longest -c:a pcm_f32le out.wav Is it possible with ffmpeg? -- 1 mono input and 2 stereo inputs
11:56
How to Concatenate Multiple Videos Using Cross fade in between and fade out at the end (FFMPEG) - Robert Newest 'ffmpeg' Questions - Stack Overflow

Is there a way to concatenate file1.mp4 add xfade file2.mp4 add fade out? The first file usually has 30 seconds while the second is 10 seconds long. Also, is it possible to make the above merging work with multiple inputs/outputs? I know there's a way using the input using List.txt, but it would need some more clarification to get the above concatenation and fades work with the file paths instead of each file for input. FileA.mp4+FileA2.mp4 = FileA.mp4 FileB.mp4+FileB2.mp4 = (...)
11:40
Class 'Pbmedia\\LaravelFFMpeg\\FFMpeg' not found - Elix Newest 'ffmpeg' Questions - Stack Overflow

Inside an Artisan command I have this FFMpeg::fromDisk('songs') ->open('this.mp4') ->export() ->toDisk('converted_songs') ->inFormat(new \\FFMpeg\\Format\\Audio\\Aac) ->save('yesterday.aac'); At the top of the file I already added use Pbmedia\\LaravelFFMpeg\\FFMpeg; I am getting this error Class 'Pbmedia\\LaravelFFMpeg\\FFMpeg' not found I am also using Laravel-zero, and I have tried everything possible. Been stuck on this for hours now, any (...)
11:28
Is there a way to tell ffmpeg mpdecimate to only evaluate a specific part of the frame? - CrosswordPuzzlz Newest 'ffmpeg' Questions - Stack Overflow

I have a 60 FPS screen recording of a significantly slower, variable frame rate, video. It is supposed to, however, be constant frame rate. Fortunately, frame numbers are present in a fixed area of the screen. Within that area, the only time anything changes is when the frame number changes. (There are sometimes changes between frames - in other parts of the frame - that I would like mpdecimate to ignore. Those changes, however, never appear in the frame count zone.) Is there a way that I can tell mpdecimate to only evaluate that small 'frame counting' portion of (...)
11:18
Can I have a rawvideo stream in a MPEG TS container - zardosht Newest 'ffmpeg' Questions - Stack Overflow

I receive an MPEG TS container over network (UDP). It contains two streams: an mpeg2video vidoe stream with yuv420p pixel format and a data stream encoded using a propitiatory KLV format. My receiver program must be in Python. So, I can't use FFMPEG library (like AVFormat, AVCodec) directly. Now my problem is as follows: I need to receive video frames and save them as RGB image as raw numpy array. I also need for each frame to parse the corresponding KLV data. There is a one to one relationship between video frames and KLV data units. I thought I use ffprobe to (...)
10:22
How can I open a rtsp stream with ffplay and feed the frames to opencv? - Scion11 Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a CV project streaming from an IP camera. I happened to find it is faster to stream with ffplay than with opencv directly. This is because opencv does not provide a flush()-like function that clears the buffer before retrieving a frame. In that case, opencv always takes the first frame instead of the last frame for use. I'm just wondering if there's a way to use ffplay (or ffmpeg) as backend to feed the latest frame to opencv. Comparing the following code, ffplay is much faster than opencv in streaming: import cv2 import (...)
09:13
FFMPEG: Transcode UHD H265 to SDR H264 without color loss - Abhinandan Chakraborty Newest 'ffmpeg' Questions - Stack Overflow

I'm testing FFMPEG on my server. I'm trying to transcode H265 10-bit to H264 8-bit to support playing the video on all major web browser. 1. This is the first command: ffmpeg -i 4K.ts -c:a aac -c:v h264 -crf 19 -preset ultrafast out.mp4 Result: Video only playable on VLC media player. Doesn't play on any browser 2. Then I tried using this command: ffmpeg -i 4K.ts -c:a aac -c:v h264 -crf 19 -profile:v main -preset ultrafast -vf "format=yuv420p" out.mp4 Result: Video is playable everywhere but massive color loss. 3. Then I tried (...) -- https://drive.google.com/uc?export=download&id=1pGsnknkoIDRPKrW-YPFS7U31J09PeM4N
06:29
Does framerate influence compressing videos on ffmpeg? - caiomarqs Newest 'ffmpeg' Questions - Stack Overflow

When I try to compress a video on ffmpeg with two pass, I see there is some disparity between the number I targeted in the command line and the output's final video bitrate. I'd like to know if there are some other factors that I'm not considering. Maybe framerate? Example: Windows command: ffmpeg -y -i input.mp4 -c:v libx264 -b:v 313k -pass 1 -an -f null NUL && ^ ffmpeg -i input -c:v libx264 -b:v 313k -pass 2 -c:a aac -b:a 96k output.mp4 Linux command: ffmpeg -y -i input.mp4 -c:v libx264 -b:v 313k -pass 1 -an -f null /dev/null (...) -- two pass, print of output's data

26 November

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

22:13
How to use amerge with offset in ffmpeg? - user14706760 Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to get a mono file out of 2 mono files with offset: ffmpeg -itsoffset 2 -i mono1.wav -itsoffset 8 -i mono2.wav -filter_complex [0:a][1:a]amerge out.wav But the result I'm getting is a stereo file without an offset. What do I do wrong?
22:12
Trimming audio using mp4Parser. Or is there any alternative? - user3892282 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to trim an audio using mp4Parser. Is that possible? I tried ffmpeg which is quite time consuming. Our app does require both video and audio processing. Any suggestions on this? -- mp4Parser
21:19
Setting B frames in a video with ffmpeg - roberutsu Newest 'ffmpeg' Questions - Stack Overflow

According to ffmpeg manual, setting -g is to define space between "I" frames, and setting -bf to use "B" frames. The former I got, but the latter not. The goal: I'm trying to have a video with a GOP 3,12 (M= 3, N=12). That means: 2 "B" frames separating each "P" frames, and "I" frames with 12 frames of distance. Or simply: "IBBPBBPBBPBBI" I think that I got only the N=12, using the commands below: ffmpeg -s cif -r 30 -b 64000 -bt 3200 -g 12 -y -i video.yuv -vcodec mpeg4 video.m4v MP4Box -hint -mtu 1460 -fps 30 -add video.m4v (...) -- http://www2.tkn.tu-berlin.de/research/evalvid/cif.html
20:34
ffmpeg change metadata inside video file - virtualsets Newest 'ffmpeg' Questions - Stack Overflow

Hello I have problems to change timecode insdie metadata of a video file "mov" ruta=r"E:\\Brutos-sin-eliminar\\inma-ruben-22-2-2020\\multicam\\\\" nombre=r"A019_02230134_C186.mov" comand="ffmpeg -i " + nombre + " -ss 0 -map 0 -acodec copy -vcodec copy -timecode 01:20:10:00 -metadata:s:2:0 timecode=01:20:10:00 -metadata:s:1:0 timecode=01:20:10:00 -metadata:s:0:2 -metadata:s:0:2 timecode=01:10:10:00"+ " convert_" + nombre os.popen(comand) I need to put muy own timecode to the file but this command not works. The console give me mov ⓐ (...)
19:01
How do you get FFMPEG to encode with vaapi? - dicroce Newest 'ffmpeg' Questions - Stack Overflow

I've seen various examples of using libavcodec with vaapi to accelerated decoding, but how do you use it to accelerate encoding?
18:39
Unrecognized option 'txt_format' in ffmpeg latest version - RecklessSergio Newest 'ffmpeg' Questions - Stack Overflow

I am trying to convert subtitles from scenarist closed captions(scc) to webvtt(vtt) But I am getting some special characters, so going through ffmpeg documentation https://trac.ffmpeg.org/wiki/ExtractSubtitles I got to know about the option -txt_format. But when I am using it, ffmpeg is throwing an error saying "Unrecognized option 'txt_format'. Error splitting the argument list: Option not found" FFMPEG VERSION : ffmpeg version 4.1.4 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 9.1.1 (GCC) 20190716 (...) -- https://trac.ffmpeg.org/wiki/ExtractSubtitles
20:11
How to include font in FFMPEG command without using the fontfile option? - Avinash Modi Newest 'ffmpeg' Questions - Stack Overflow

I am using the following command to add watermark in my video using font TIMESNEWROMAN: ffmpeg -i input.webm -vf "drawtext=text='© Krishna':fontfile=C//:/Windows/Fonts/times.ttf:x=(main_w-text_w-10):y=(main_h-text_h-10):fontsize=32:fontcolor=black:box=1:boxcolor=whiteⓐ0.5: boxborderw=5" -preset ultrafast output.mp4 Now, I want to provide the font TIMESNEWROMAN or any other font instead of fontfile path. Is it possible to do (...)
18:02
Ffmpeg hevc motion vectors - Mohit Kumar Newest 'ffmpeg' Questions - Stack Overflow

Can anyone kindly give a single liner for extracting block motion vectors for hevc with ffmpeg and saving in a text file for upto 4x4 cu sizes. Thanks
16:51
TCP Connection refused error when using FFMPEG for audio stream to HTTP on macOS - freddy Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to stream my microphone input via HTTP using ffmpeg, so I can stream it in HTML. I run the following ffmpeg command: ffmpeg -f avfoundation -i ":1" -c:a libmp3lame -f mp3 -r 30 http://localhost:809 It, however, crashes with the following error message: ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers built with Apple clang version 12.0.0 (clang-1200.0.32.27) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_4 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= (...)
14:44
ffmpeg How to get PCM floats from AVFrame with AV_SAMPLE_FMT_FLT - cs guy Newest 'ffmpeg' Questions - Stack Overflow

I have an AVFrame obtained through a decoder that has a format of AVSampleFormat::AV_SAMPLE_FMT_FLT. My issue is I want to convert the data stored inside avFrame->data; // returns uint8_t * to Array of floats that are between [-1, +1]. I see that avFrame->data; returns uint8_t * how may I use this to obtain the float pcm data for each channel of the audio? I tried the following: auto *floatArrPtr = (float *)(avResampledDecFrame->data[0]); for (int i = 0; i nb_samples; i++) // TODO: store interleaved floats somewhere (...)
13:56
ffmpeg output images filename with time position and problem with 'not(mod(t' - Дмитрий Мышков Newest 'ffmpeg' Questions - Stack Overflow

I'd found a such ffmpeg output images filename with time position topic, but have problem with execute that one "ffmpeg -i source -vf fps=1,select='not(mod(t,5))' -vsync 0 -frame_pts 1 z%d.jpg": ffmpeg -i ex.avi -vf fps=1,select='not(mod(t,5))' -vsync 0 -frame_pts 1 z%d.jpg Stream mapping: Stream #0:0 -> #0:0 (mpeg4 (native) -> mjpeg (native)) Press [q] to stop, [?] for help [Parsed_select_1 ⓐ 0x7f96ee6024c0] [Eval ⓐ 0x7ffee72d67d0] Missing ')' or too many args in 'mod(t' [Parsed_select_1 ⓐ 0x7f96ee6024c0] Error (...)
12:08
Feed HLS stream via FFmpeg (libavformat) as mpegts into GStreamer appsrc - M.S. Newest 'ffmpeg' Questions - Stack Overflow

Due to some problems in GStreamers HLS code, I would like to use libavformat/FFmpeg to retrieve the stream and feed my GStreamer pipeline using an appsrc element. While I was able to achieve this in a hacky way by outputting FFmpeg to a pipe and using fdsrc to feed data into the GStreamer pipeline from that pipe, I wonder if I can circumvent that and directly feed the data to appsrc. I assume that I can actually use the packet that is retrieved by av_read_frame, but as only the input streams are referenced, I assume that the packet/data is not already remuxed in an (...)
11:14
ffmpeg-python wrapper ffmpeg.run() getting FILENOTFOUNDERROR - Gerald Leese Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to figure out and learn how to use the ffmpeg-python wrapper and am getting a file not found error. both the mp4 file I'm trying to process and the python file are both in a folder on my desktop. I'm not sure if I'm using it correctly here. I'm running windows 10 32bit, python 3.6 and have ffmpeg-python 0.16.0 installed. Is there additional packages I need installed in order for this to work? I tried the same code on my 64 bit windows 10 desktop and got the same error. import ffmpeg videoInput = (...)
11:00
Video Spec to fluent-FFMPEG settings - Dean Van Greunen Newest 'ffmpeg' Questions - Stack Overflow

Not sure how to translate this video spec into fluent-FFmpeg. please assist. This is the only video I have that plays on my iPhone, and I would like to reuse the video's encoding to allow other videos I have, to be converted into the same video format. resulting in having my other videos playable via iPhone and iOS. (this also happens to play on android, I would like the recommended encoding settings to also work on android) The video should also be streamable, I know theres a flag called +faststart but not sure how to use it. (...) --
10:34
Overlays with subtitle with multiple text in ffmpeg - Konduri Sai Aditya Newest 'ffmpeg' Questions - Stack Overflow

I have the following query. please find images I have two inputs one is bg.png,( background-color), another one is baby webm with two texts one is "Double click to edit" which back of baby.webm and other "adi" which overlayed on baby.webm My command is ffmpeg -loop 1 -i bg.png -vcodec libvpx-vp9 -stream_loop -1 -i baby.webm -y -filter_complex "[0]subtitles=subs.ass:fontsdir=/fonts/Dancing_Script.ttf[sub];[1:v]scale=1076:606[scale1];[scale1]rotate=0:c=blackⓐ0:ow=rotw(0):oh=roth(0)[rotate1];[sub][rotate1]overlay=x=684.57:y=357.98,subtitles=subs.ass:fontsdir=/fonts/Times_New_Roma
10:11
Record video with Accord.net (AForge) - ghasem deh Newest 'ffmpeg' Questions - Stack Overflow

I used Accord.net (AForge) for connect to the webcam and record video But stored videos is slow motion ... this my project : using AForge.Video; using AForge.Video.DirectShow; using AForge.Video.FFMPEG; using System; using System.Drawing; using System.IO; using System.Threading; using System.Windows.Forms; namespace CaptureWebcam public partial class Form1 : Form private VideoCaptureDeviceForm captureDevice; private string path = Path.GetDirectoryName(Application.ExecutablePath) + ⓐ"\\Videos\\"; (...)
08:42
Output both m3u8 and segment files to stream - DrNickEgg Newest 'ffmpeg' Questions - Stack Overflow

This is likely a small fix but I am trying to read an .mp4 file from a download stream and convert it to HLS. I created a write stream to output the conversion. I am using google cloud storage to get the read/write streams. The problem is, the segments are not streamed and are exported locally, while the .m3u8 file is sent properly via the pipe. Is there a way to stream both the .ts and .m3u8 playlist to my pipe output, so nothing gets exported locally? const readStream = gcp.bucket().file('video.mp4').createReadStream(); const outputStream = (...)
05:09
FFMPEG - Multi Track, Multi Channel file to discrete mono files - vade Newest 'ffmpeg' Questions - Stack Overflow

I have files which are multi track, and multi channel (ie, track 1 may be 5.1, track 2 may be stereo, track 3 may be stereo etc) I am looking to output every channel from every track into its own 'unrolled' discrete mono file. example media: ffprobe version 4.3.1-0york0~18.04 Copyright (c) 2007-2020 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04) configuration: --prefix=/usr --extra-version='0york0~18.04' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl (...)
04:04
FFMPEG : Invalid data found when processing input - Schüler Newest 'ffmpeg' Questions - Stack Overflow

I am unable to upload mp3 or mp4 is there any specific path format? Here is my code. I have tried this also ffmpeg -i Video/" + Name + " -ss 01:30 -r 1 -an -vframes 1 -f mjpeg Video/" + Name + ".jpg exec("ffmpeg -y -i Video/" + Name + " -map_metadata -1 -ab 192k Video/" + Name + ".jpg", function(err) if (err) console.log(err) console.log('Done', 'Image' : 'Video/' + Name + '.jpg'); ); Here is the error Error: Command failed: ffmpeg -y -i (...)
03:34
How to use streams with FFMPEG and Node - Pedro Dalla Newest 'ffmpeg' Questions - Stack Overflow

I am interested in using ffmpeg with node. I have looked at the many libraries available (such as fluent-ffmpeg), but they are not what I'm looking for. I would like to know if there is a way to execute FFMPEG with node, but instead of creating a file, transfering everything to a stream. I don't want to use disc space for 'reasons' and it would make more sense for my application to execute a command and pipe that audio/video into a node stream instead. Is there a way to do this? If so, what's my best (...)

25 November

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

15:03
How to mix a list of audio files with their timestamps in ffmpeg? [closed] - user14706760 Newest 'ffmpeg' Questions - Stack Overflow

Track 1: I have a list of mono audio files (about 100 pcs.) and a list of their timestamps. Track 2: I have another list of stereo sound effects (about 20 pcs.) and a list of their timestamps. Track 3: I have another stereo file which is longer than track 1 and track 2. How can I mix all three tracks and then apply normalization? I found that normalization can be done like this: ffmpeg-normalize 1.wav 2.wav -o 1n.wav 2n.wav But I can't figure out how I should apply amix or amerge function in this (...)
23:03
FFMPEG using Google Drive API instead of Shared URL - Marcus Newest 'ffmpeg' Questions - Stack Overflow

We are using FFMPEG to stream a Google Drive URL into a node application. Is there an FFMPEG method or library we can use to stream to FFMPEG using the Google Drive API instead of using the standard public shared URL? At the moment using the URL works fine if the file size is https://drive.google.com/uc?export=download&id=fileId: Invalid data found when processing input This is because we reach the pesky gDrive virus roadblock (...) -- Google Drive API,
19:29
ffmpeg: problems playing video on android - Jonathan García Newest 'ffmpeg' Questions - Stack Overflow

(Translated) Hello! I have the following problem. I concatenate multiple ts files and convert to mp4 with ffmpeg. I do this operation multiple times in an automated way, so I don't always check the results, but whenever I do, on the computer, the result obtained is as expected. However, some videos, when played on an Android device, are seen incorrectly in any application: Chrome, Firefox, Vlc, etc. The version of ffmpeg I use is the latest. This is the command I use: ffmpeg.exe -hwaccel dxva2 -y -f concat -i list.txt -acodec copy -vcodec copy output.mp4 -preset normal (...) -- PC, Android
18:20
ffmpeg screen recording in background - Maciejjy Newest 'ffmpeg' Questions - Stack Overflow

I would like to record my screen with ffmpeg during some automation work as a step in Azure devOps. I can use some simple command like: .\\ffmpeg -f gdigrab -framerate 10 -i desktop vid.avi and it is working but for ADO this is one step in whole job so until it is not finished it will simply not go next step. I need this recording for whole job. Right now when I run this command then command line is 'frozen' it is showing progress of recording. For ADO it means that this step is not finished. I would like to know if it's possible to run (...)
16:32
FFmpeg What does flushing a codec do? - cs guy Newest 'ffmpeg' Questions - Stack Overflow

I am looking at the examples of FFmpeg Demuxing, Encoding. Whenever demuxing, encoding is finished codecs are flushed: Demuxer: /* flush the decoders */ if (video_dec_ctx) decode_packet(video_dec_ctx, NULL); if (audio_dec_ctx) decode_packet(audio_dec_ctx, NULL); printf("Demuxing succeeded.\\n"); Encoder: /* flush the encoder */ encode(c, NULL, pkt, f); I can not understand why the examples do this. It seems like sending nullptr as frame or packet does flushing but what is flushing? What does flushing a codec mean in the (...) -- Demuxing, Encoding
17:55
FFMPEG - How can I synchronize 2 IP cameras and audio? - Bashev Newest 'ffmpeg' Questions - Stack Overflow

Goal: I want to capture 2 IP cameras and merge their video streams + one of the audio. Problem: I can either synchronize the videos and then the audio is not synchronized or I can synchronize one of the videos with the audio and then the other video is not synchronized. What I did: Both IP cameras are configured with the same NTP server Command 1 ffmpeg -fflags +genpts -r 24 -copyts -rtsp_transport tcp -thread_queue_size 102400 -rtbufsize 50M -i rtsp://user:passwordⓐcamera1/axis-media/media.amp -fflags +genpts -r 24 (...)
15:40
how to schedule overlap between two video files? - one noa Newest 'ffmpeg' Questions - Stack Overflow

I have 2 mp4 videos. One is the main movie and the second is an ending file. A part of the ending file is partly transparent and i want to create a new file with overlap between the files. For example: The length of the main.mp4 file is 10:00 minutes. The length of the ending.mp4 file is 2:00 minutes, the first minute is partly transparent. I want to create a new file As follows: 1-9 minutes of main.mp4 9-10 minute ending.mp4 file overlay the main.mp4 file, I want to overlap them both. 10-11 minute the rest of ending.mp4. Is there a way to do it in ffmpeg or (...)
15:17
How to distort audio with ffmpeg? - theonlygusti Newest 'ffmpeg' Questions - Stack Overflow

Using ffmpeg cli, how can I add overdrive/distortion to an audio?
14:12
Reading h264 or h265 stream with ffmpeg/OpenCV: Which is faster? - suckss Newest 'ffmpeg' Questions - Stack Overflow

I'm using OpenCV with ffmpeg support to read a RTSP stream coming from an IP camera and then to write the frames to a video. The problem is that the frame size is 2816x2816 at 20 fps i.e. there's a lot of data coming in. I noticed that there was a significant delay in the stream, so I set the buffer size of the cv::VideoCapture object to 1, because I thought that the frames might just get stuck in the buffer instead of being grabbed and processed. This however just caused for frames to be dropped instead. My next move was to experiment a bit with the frame size/fps and (...)
13:53
Is there a way to create a single HLS output from more than one RTMP inputs in listen mode? - Gabriele Tassoni Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to create a single HLS output using, as inputs, different RTMP playpaths or different RTMP streams, i.e.: rtmp://ip:1935/app/key0 rtmp://ip:1935/app/key1 rtmp://ip:1935/app/key2 The resulting HLS output should have video track from key0, and three audio tracks from key0, key1 and key2. I used FFMPEG, but I'm open to different open source software for the server/converter part. What I tried so far: NO RTMP approach I get in input anything thrown to a TCP port, the mp4 stream sent already has multiple audio tracks, this (...)
11:55
create mp4 slide show on raspbian - Ramin Newest 'ffmpeg' Questions - Stack Overflow

I have RPi running raspbian. I want a solution to convert a folder of image files to an mp4 slide show video that can be played with omxplayer. I did it with ffmpeg and following command: ffmpeg -y -framerate .1 -pattern_type glob -i '*.jpg' -c:v libx264 -pix_fmt yuv420p out.mp4 It works with mpv media player but playing it with the flowing command with omx player does not do anything. omxplayer --loop --no-osd --win 0,0,128,224 --orientation 90 out.mp4 I must use omx player to output on exact window and be compatible with older (...)
11:09
Disabled libsrt_protocol because not all dependencies are satisfied: libsrt [closed] - Shankar Newest 'ffmpeg' Questions - Stack Overflow

I am trying to enable libsrt in ffmpeg-4.2.2 using cmd : ./configure --enable-protocol=libsrt --disable-x86asm. but i get warning msg as it's mentioned in title of question. Also, i had tried with ffmpeg build cmd : ./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" --enable-libsrt --disable-x86asm But, i got error msg as : ERROR: srt >= 1.3.0 not found using pkg-config So please help me with this. If anybody let me know where am i doing wrong or which libraries should i supposed to install for that. Thank (...)
11:50
ffmpeg h264_amf error: CreateComponent(AMFVideoEncoderVCE_AVC) failed with error 10 - Poiter Newest 'ffmpeg' Questions - Stack Overflow

Trying to transcode a video on a Azure VM with Windows 2019 and with a AMD Radeon instinct MI25 GPU gives this error: CreateComponent(AMFVideoEncoderVCE_AVC) failed with error 10 Command used: ffmpeg -i input.mp4 -c:v h264_amf output.mp4 (ffmpeg is compiled with h264_amf support) I could not find any info on this specific error. Any ideas?
11:32
Use ffprobe result in ffmpeg command - doner Newest 'ffmpeg' Questions - Stack Overflow

I know how to get audio duration and how to do fade-out: ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 in.wav ffmpeg -y -i in.wav -filter_complex "afade=t=out:st=5:d=0.5" out.wav How can I use the result of the first command in the second line and place fade-out at the end?
09:59
mp3 to wav with ffmpeg reduces quality and duration - Neret Newest 'ffmpeg' Questions - Stack Overflow

I took this mp3 file and converted it to wav with Audition and with this ffmpeg command: ffmpeg -i "Casey Don’t You Fret - Dan Lebowitz.mp3" -c:a pcm_f32le "Casey Don’t You Fret - Dan Lebowitz_FFMPEG.wav" After that I checked the statistics in Audition. The wav file which was generated with Audition has exactly the same statistics as the original mp3 file. The duration of ffmpeg file has changed. Audio statistics became worse. Why is this happening? Can I fix it? I used ffmpeg version 2020-11-22-git-0066bf4d1a-full_build-www.gyan.dev on Windows. UPDATE (...) -- this mp3 file, , , this 2.mp3 file, ,
09:56
How do I merge concat and combine script for a single, looping and batch looping script? [closed] - code0001 Newest 'ffmpeg' Questions - Stack Overflow

Let’s say, I have an audio file Audio1.mp3 in a folder. I have a script that lists all mp4 files in the same folder into text file i.e concat_list.txt that I use to concat videos. Normally, to concat the videos I use the script: ffmpeg -f concat -i concat_list1.txt -c copy -y concatedVideo1.mp4 To join the audio and the concatedVideo1.mp4 I have the following script: ffmpeg -i audio1.mp3 -i concatedVideo1.mp4 -acodec copy -vcodec copy -shortest newfiles/combinedvideo1.mp4 Questions: How do I combine the two scripts (concat and join)? How (...)
09:28
How to hide the output of yt-dl in CMD? python - Qais Albeaiz Newest 'ffmpeg' Questions - Stack Overflow

I'm coding program that download mp3 audio from youtube videos but I have an issue that yt-dl show some output in console my code: with open('Links.txt') as f: content = f.readlines() for links in content: ydl_opts = 'format': 'bestaudio/best', 'postprocessors': [ 'key': 'FFmpegExtractAudio', 'preferredcodec': 'mp3', 'preferredquality': '192', ], with youtube_dl.YoutubeDL(ydl_opts) as ydl: (...) --
07:52
How to play entire youtube playlist on discord.py bot with youtube-dl - bork Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to make a discord music bot. I'm using youtube-dl to retrieve the info and ffmpeg to play the audio out. My bot can successfully queue and play regular videos but when it comes to playing the entire playlist, it doesn't work. This is my code for playing playlists: if 'entries' in info: for i in info['entries']: URL = i['formats'][0]['url'] player = FFmpegPCMAudio(URL, **FFMPEG_OPTIONS) queue.append(player) source = queue.pop(0) voice.play(player, after = lambda e: play_next(ctx, (...)
07:41
Are there any side effect of using -preset ultrafast in FFMPEG command? - Avinash Modi Newest 'ffmpeg' Questions - Stack Overflow

I using the following command to add text watermark in a video file: ffmpeg -i input.mp4 -vf "drawtext=text='© Krishna':x=(main_w-text_w-10):y=(main_h-text_h-10):fontsize=32:fontcolor=black:box=1:boxcolor=whiteⓐ0.5: boxborderw=5" -preset ultrafast output.mp4 Is there any repercussion of using the "-preset ultrafast" filter?
07:36
ffmpeg mkv to mp4 conversion has color tint - razvan Newest 'ffmpeg' Questions - Stack Overflow

I am recording the screen in a lossless format to have small CPU load ffmpeg -f gdigrab -framerate 30 -i desktop -vcodec libx264rgb -crf 0 -preset ultrafast rec.mkv ffprobe rec.mkv Input #0, matroska,webm, from 'vid.mkv': Metadata: ENCODER : Lavf58.64.100 Duration: 00:00:29.67, start: 0.000000, bitrate: 2829 kb/s Stream #0:0: Video: h264 (High 4:4:4 Predictive), gbrp(pc, gbr/unknown/unknown, progressive), 1920x1200, 30 fps, 30 tbr, 1k tbn, 60 tbc (default) Metadata: ENCODER : Lavc58.112.103 libx264rgb DURATION : (...)
07:27
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 (...)
06:04
flutter video_trimmer package error=13, Permission denied - SILENMUS Newest 'ffmpeg' Questions - Stack Overflow

I changed targetSdk 29 for upload google playstore. ( google targetSdk policy ) Now I got this error when I click Execute button, phone die immediately and error message like this E/FFmpeg ( 9618): java.io.IOException: Cannot run program "/data/user/0/myProject/files/ffmpeg": error=13, Permission denied is there a way to solve this problem? ( targetSdk 28 was no problem )
02:21
FFMPEG RTMP to HLS is Really Slow - Devin Dixon Newest 'ffmpeg' Questions - Stack Overflow

I have an RTMP server that is outputting a stream as such: ffmpeg -re -i https://somefile.mp4 -maxrate 5M -crf 24 -bufsize 6000k -c:v libx264 -preset superfast -tune zerolatency -strict -2 -c:a aac -ar 44100 -attempt_recovery 1 -max_recovery_attempts 5 -drop_pkts_on_overflow 1 -max_muxing_queue_size 9999 -f flv rtmp://www.example.com/live/c731d17e-9a6d-41f8-aa0c-52416eb5f6ce On the receiving server, its transmuted into an HLS with this command /usr/bin/ffmpeg -y -i rtmp://127.0.0.1:1935/live/c731d17e-9a6d-41f8-aa0c-52416eb5f6ce -c:v copy -maxrate 6000k -bufsize 8000k (...)
01:17
Extract frames from live youtube stream - irman Newest 'ffmpeg' Questions - Stack Overflow

I want to extract frames from a youtube live event, say one frame every 5 minutes, ideally without saving the stream to my local machine. Is there a simple way to do this, possibly a combination between youtube-dl and ffmpeg that I am not figuring out? I found a similar question for UDP streams but don't know how to include the youtube stream: FFMPEG: extract a fram from a live stream once every 5 seconds Thanks a lot in advance!
01:11
AVCodecContext::channel_layout 0 for WAV files - cmannett85 Newest 'ffmpeg' Questions - Stack Overflow

I have been successfully loading compressed audio files using FFmpeg and querying their channel_layouts using some code I've written: AVFormatContext* fmtCxt = nullptr; avformat_open_input( &fmtCxt, "###/440_sine.wav", nullptr, nullptr ); avformat_find_stream_info( fmtCxt, nullptr ); av_find_best_stream( fmtCxt, AVMEDIA_TYPE_AUDIO, -1, -1, nullptr, 0 ); AVCodecContext* codecCxt = fmtCxt->streams[ret]->codec; AVCodec* codec = avcodec_find_decoder( codecCxt->codec_id ); avcodec_open2( codecCxt, codec, nullptr ); std::cout (...)
00:54
ffmpeg not letting me use variables in place of actual urls or start and stop times to download a portion of a video - sathu-beep Newest 'ffmpeg' Questions - Stack Overflow

so I have been trying to download some videos using ffmpeg. Im using the subprocess.call('ffmpeg -i $(youtube-dl -f 133 --get-url l) -ss 0.4 -to 5.5 -c:v copy -c:a copy happy.mp4',shell=True) command, however, It works fine when I replace the l after "get url" with an actual url, but when I set l as a variable that points to a url, it takes l literally, and says that l is an invalid url. How do I get ffmpeg to recognize that l is a variable and use the url stored in it. Ive tried putting quotes, turning it into a string, and nothing works. Any help is appreciated. It also wont (...)
00:09
Convert wav to flv using speex codec - Vlad Newest 'ffmpeg' Questions - Stack Overflow

How can I convert a wav file to an flv, resampling to a rate of 11kHz, and encoded with speex? Is it possible?

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