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• Trimming videos using FFMPEG + Python : Invalid Argument

  26 juin 2019, par user2588534

  I am looking to use a short Python script to automate some video cutting for me based on a .txt file I created with timecodes. I use the following code for that :

  #!/usr/bin/env python3
  
  import subprocess
  
  first = True
  
  with open('VideoSlicepoints_Python.txt') as f:
  
    for line in f.readlines():
  
      if first:
  
          first = False
  
      else:
  
          filename, VideoDing_Timecode, Video_R4Start, Video_R4End, Video_R24Start, Video_R24End, Video_R0plus15 = line.strip().split(';')
  
          cmd = ['ffmpeg', '-i', filename, '-ss', Video_R4Start, '-to', Video_R4End, '-c', 'copy', '"S:/_RobotThesis/VideoRounds/' + filename[:-4] + '_r4' + filename[-4:] + '"']
  
          print(" ".join(cmd))
  
          subprocess.run(cmd, stderr=subprocess.STDOUT)

  This returns me with the following error when it is trying to loop over to videos :

  [NULL @ 0000027cddf8a100] Unable to find a suitable output format for '"S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"'
  
  "S:/_RobotThesis/VideoRounds/log1_front_r4.MTS": Invalid argument

  Now, I thought it was a formatting issue, but when I input the command directly (as is visible in the CMD prompt), it works just fine :

  ffmpeg -i log1_front.MTS -ss 09:37.1 -to 11:37.1 -c copy "S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"

  For reference, this is an excerpt of the .txt file I am using (it is based on a csv file, that’s why it has headers and I excluded the header in the script) :

  Filename;VideoDing_Timecode;Video_R4Start;Video_R4End;Video_R24Start;Video_R24End;Video_R0plus15
  
  log1_front.MTS;04:44.0;09:37.1;11:37.1;28:00.3;30:00.3;19:44.0
  
  log2_front.MTS;03:50.0;08:11.2;10:11.2;19:44.9;21:44.9;18:50.0
  
  log3_front.MTS;04:10.1;08:32.4;10:32.4;16:49.2;18:49.2;19:10.1
  
  log5_front.MTS;01:14.7;04:50.2;06:50.2;14:24.5;16:24.5;16:14.7

  Edit :

  Here is the full output in the CMD, if needed :

  ffmpeg -i log1_front.MTS -ss 09:37.1 -to 11:37.1 -c copy "S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"
  
  ffmpeg version N-94054-gdd357d76e5 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 8.3.1 (GCC) 20190414
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 28.100 / 56. 28.100
  
    libavcodec     58. 53.100 / 58. 53.100
  
    libavformat    58. 27.103 / 58. 27.103
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 55.100 /  7. 55.100
  
    libswscale      5.  4.101 /  5.  4.101
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Input #0, mpegts, from 'log1_front.MTS':
  
    Duration: 00:37:35.05, start: 1.440000, bitrate: 12560 kb/s
  
    Program 1
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
      Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(top first), 1440x1080 [SAR 4:3 DAR 16:9], 25 fps, 50 tbr, 90k tbn, 50 tbc
  
      Stream #0:1[0x101]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 256 kb/s
  
  [NULL @ 000002d1f347a100] Unable to find a suitable output format for '"S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"'
  
  "S:/_RobotThesis/VideoRounds/log1_front_r4.MTS": Invalid argument

• ffmpeg Output file #0 does not contain any stream when trying to access 1 of 2 audio streams

  7 juillet 2019, par nulltorpedo

  ffmpeg -i input.mkv  -map 0:2 -c copy -strict -2  audio.mkv

  Hi I have the above command. The output shows that there are 2 audio streams. I want to copy just the ac3 audio (actually I want to convert it but even this copy does not work). I have truncated the output print where there is metadata

  NEW updated sample with full log which results in same message

  ffmpeg -i input.mka -map 0:0 -c:a libfdk_aac   aac_out.m4a
  
  ffmpeg version 2.7.1 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.3 (crosstool-NG 1.20.0) 20150311 (prerelease)
  
    configuration: --prefix=/usr --incdir='${prefix}/include/ffmpeg' --arch=i686 --target-os=linux --cross-prefix=/usr/local/x86_64-pc-linux-gnu/bin/x86_64-pc-linux-gnu- --enable-cross-compile --enable-optimizations --enable-pic --enable-gpl --enable-shared --disable-static --enable-version3 --enable-nonfree --enable-libfaac --enable-encoders --enable-pthreads --disable-bzlib --disable-protocol=rtp --disable-muxer=image2 --disable-muxer=image2pipe --disable-swscale-alpha --disable-ffserver --disable-ffplay --disable-devices --disable-bzlib --disable-altivec --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libmp3lame --disable-vaapi --disable-decoder=amrnb --disable-decoder=ac3 --disable-decoder=ac3_fixed --disable-encoder=zmbv --disable-encoder=dca --disable-encoder=ac3 --disable-encoder=ac3_fixed --disable-encoder=eac3 --disable-decoder=dca --disable-decoder=eac3 --disable-decoder=truehd --cc=/usr/local/x86_64-pc-linux-gnu/bin/x86_64-pc-linux-gnu-ccache-gcc --enable-yasm --enable-libx264 --enable-encoder=libx264
  
    libavutil      54. 27.100 / 54. 27.100
  
    libavcodec     56. 41.100 / 56. 41.100
  
    libavformat    56. 36.100 / 56. 36.100
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 16.101 /  5. 16.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.100 /  1.  2.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, matroska,webm, from '/volume1/..../input.mka':
  
    Metadata:
  
      encoder         : libebml v1.3.9 + libmatroska v1.5.2
  
      creation_time   : 2019-07-07 06:19:20
  
    Duration: 02:29:21.98, start: 0.000000, bitrate: 640 kb/s
  
      Stream #0:0(eng): Audio: ac3, 48000 Hz, 5.1(side), 640 kb/s
  
      Metadata:
  
        BPS-eng         : 640000
  
        DURATION-eng    : 02:29:21.984000480
  
        NUMBER_OF_FRAMES-eng: 280062
  
        NUMBER_OF_BYTES-eng: 716958720
  
        _STATISTICS_WRITING_APP-eng: mkvmerge v35.0.0 ('All The Love In The World') 64-bit
  
        _STATISTICS_WRITING_DATE_UTC-eng: 2019-07-07 06:19:20
  
        _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  
  Output #0, ipod, to 'aac_out.m4a':
  
    Metadata:
  
      encoder         : libebml v1.3.9 + libmatroska v1.5.2
  
  Output file #0 does not contain any stream

• How to run the ffmpeg command using node.js ?

  12 juillet 2019, par Sachin Shah

  In node, When I got the request from /playMovie from App, I need to broadcast the video.

  When I execute this command in terminal it works fine.

  ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv rtmp://192.168.1.13/live/myStream

  Now I’m going to setup this dynamic.

  app.use('/playMovie', function (req, res) {
  
    console.log("playMovie...");
  
    let filePaht = 'movie.mkv';
  
    let fileName = 'marvel-avengers';
  
  
  
    let ffmpeg = spawn(`ffmpeg -re -i ${filePaht}  -c:v libx264 -preset 
  
      superfast -tune zerolatency -c:a aac -ar 44100 -f flv 
  
  rtmp://192.168.1.13/live/${fileName}`);
  
       ffmpeg.on('exit', (statusCode) => {
  
     console.log("statusCode ::::::::::::::::::::::::::::::::: ",statusCode);
  
     if (statusCode === 0) {
  
        console.log('conversion successful')
  
     }
  
   })
  
  
  
  ffmpeg
  
    .stderr
  
    .on('data', (err) => {
  
      console.log('err:', new String(err))
  
    })
  
  }); 

  Refrence Link

  While run the app I got this error.

  playMovie...
  
  12/07/2019 15:27:17 31722 [ERROR] uncaughtException { Error: spawn ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv rtmp://192.168.1.13/live/marvel-avengers ENOENT
  
  at _errnoException (util.js:1022:11)
  
  at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
  
  at onErrorNT (internal/child_process.js:372:16)
  
  at _combinedTickCallback (internal/process/next_tick.js:138:11)
  
  at process._tickCallback (internal/process/next_tick.js:180:9)
  
  code: 'ENOENT',
  
  errno: 'ENOENT',
  
  syscall: 'spawn ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv 
  
  rtmp://192.168.1.13/live/marvel-avengers',
  
  path: 'ffmpeg -re -i movie.mkv  -c:v libx264 -preset superfast -tune zerolatency -c:a aac -ar 44100 -f flv rtmp://192.168.1.13/live/marvel-avengers',
  
  spawnargs: [] }