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• Not best results for [screen capture] streaming with ffmpeg js

  13 mai 2021, par Nikola Lukic

  Platform : Windows 10
Ffmpeg version 4.4-full_build-www.gyan.dev

  


  This app works fine on macos.

  


  node websocket-relay.js supersecret 8081 8082

http-server --host=https://localhost --port 8080

ffmpeg -f  gdigrab  -i desktop -framerate 30 -video_size 640x480 -f mpegts -codec:v mpeg2video -s 640x480 -rtbufsize 100M -b:v 1000k -bf 0 http://localhost:8081/supersecret


  


  Logs :

  


  frame= 5515 fps= 20 q=31.0 size=    8302kB time=00:04:36.20 
frame= 5526 fps= 20 q=31.0 size=    8317kB time=00:04:36.77 
frame= 5537 fps= 20 q=31.0 size=    8331kB time=00:04:37.31 
frame= 5548 fps= 20 q=24.8 size=    8346kB time=00:04:37.87 
frame= 5558 fps= 20 q=31.0 size=    8352kB time=00:04:38.37 
frame= 5569 fps= 20 q=31.0 size=    8368kB time=00:04:38.91 
frame= 5579 fps= 20 q=31.0 size=    8382kB time=00:04:39.41 
frame= 5590 fps= 20 q=31.0 size=    8397kB time=00:04:39.97 
frame= 5600 fps= 20 q=31.0 size=    8411kB time=00:04:40.48 


  


  Finally in my browser i got something like that :

  


  

  


  Any suggestion !
I am new for ffmpeg topic...

  


• fluent-ffmpeg add multiple languages from method dynamically nodejs

  18 février 2021, par AmitKumar

  I am trying to add multiple languages and subtitles to a video dynamically. but I am not able to find any solution, I found many results for the command line.

  


  I want to call this command script from my nodejs method

  


  ffmpeg -i captain-marvel-trailer.mp4 -i tamil.mp3 -i telugu.mp3 -i hindi.mp3 -map 1 -map 2 -map 3 -metadata:s:a:0 language=eng -metadata:s:a:1 language=tam -metadata:s:a:2 language=tel -metadata:s:a:3 language=hin -codec copy multilanguage.mp4


  


  Here is my codes :

  


  lodash.each(payloadData.languages,function(language){
    let start = 0;
    let max = payloadData.languages.length;
    while (start < max) {
        // fname = `${path.resolve(`contents/hindi.mp3`)} -map 1 -metadata:s:a:0 language=hin -codec copy ${finalVideoPath}`
        // ffmpeg().input(fname)        
        start += 1;
    }
})
    
ffmpeg('./sample.mov')
    .withOutputFormat('.mp4')
    .size('1920x1080')
    .on("end", function (stdout, stderr) {  

    })
}).on("error", function (err) {
    console.log("an error happened: " + err.message);
}).save(finalVideoPath)


  


• Can't write packet with unknown timestamp av_interleaved_write_frame() : Invalid argument

  28 mai 2024, par jagvetinte

  I'm trying to convert a .ts file with this output to mkv :

  


  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= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
[mp3float @ 0x7fbd6282b200] Header missing
[mpegts @ 0x7fbd62809000] PES packet size mismatch
[mpegts @ 0x7fbd62809000] Packet corrupt (stream = 2, dts = 7125804577).
[mpegts @ 0x7fbd62809000] PES packet size mismatch
[mpegts @ 0x7fbd62809000] Packet corrupt (stream = 2, dts = 7125804577).
[mpegts @ 0x7fbd62809000] PES packet size mismatch
[mpegts @ 0x7fbd62809000] Packet corrupt (stream = 1, dts = 7125790091).
Input #0, mpegts, from '/Users/"User"/Downloads/input.ts':
  Duration: 02:11:32.82, start: 71283.837456, bitrate: 17149 kb/s
  Program 1 
    Stream #0:0[0x1004]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 2.08 tbr, 90k tbn, 100 tbc
    Stream #0:1[0x1104](swe): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 256 kb/s
    Stream #0:2[0x704](swe): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 640 kb/s


  


  To do that I'm using this command :

  


  ffmpeg -i input.ts -c copy output.mkv


  


  But the conversion fails with this error :

  


  Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[matroska @ 0x7fb8c1808200] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[matroska @ 0x7fb8c1808200] Can't write packet with unknown timestamp
av_interleaved_write_frame(): Invalid argument
[matroska @ 0x7fb8c1808200] Can't write packet with unknown timestamp
Error writing trailer of output.mkv: Invalid argument
frame=   27 fps=0.0 q=-1.0 Lsize=      74kB time=00:00:00.85 bitrate= 705.5kbits/s speed=  99x    
video:1092kB audio:35kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!


  


  What should I do in order to fix this ? I've already tried to add -fflags +genpts in the beginning but it fails anyway.

  


  EDIT : I did solve it by using MKVToolNix instead.