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• ffmpeg command not interpreted correcly from cron

  16 avril 2022, par Andre Lörchner

  on my raspberry pi I'm trying to run a script every 30 minutes that restarts a video stream. Reason is the stream is consistently running into hickups after roughly 35 minutes and stops a few minutes after.
I tried fixing the root problem without any success so far, so an easier and valid workaround is to just restart the stream.

  


  I created a script restart_stream.sh that kills the previous stream and immediately starts it again.

  


  #!/bin/bash&#xA;&#xA;killall -r libcamera-vid ffmpeg&#xA;libcamera-vid -t 0 --framerate 30 --width 1280 --height 720 -b 2000000 -o - --nopreview | ffmpeg -f h264 -thread_queue_size 4096 -i - -f pulse -ar 44100 -ac 2 -acodec pcm_s16le -thread_queue_size 4096 -i default -vcodec copy -acodec aac -ab 128k -fflags genpts -fflags igndts -f fifo -fifo_format flv -map 0:v -map 1:a? -drop_pkts_on_overflow 1 -attempt_recovery 1 -recovery_wait_time 2 rtmp://a.rtmp.youtube.com/live2/<key>&#xA;</key>

  


  cron job

  


  */30 7-19 * * * /bin/restart_stream.sh >/tmp/stream.log 2>&1


  


  Running this script manually from the ssh console works perfectly fine but once I run it from cron it fails with the following error

  


  [1:41:01.657471459] [2138]  INFO RPI raspberrypi.cpp:1326 Registered camera /base/soc/i2c0mux/i2c@1/ov5647@36 to Unic>
[1:41:01.658232799] [2136]  INFO Camera camera.cpp:1028 configuring streams: (0) 1280x720-YUV420
[1:41:01.659060988] [2138]  INFO RPI raspberrypi.cpp:747 Sensor: /base/soc/i2c0mux/i2c@1/ov5647@36 - Selected sensor >
[1:41:01.698525343] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: Saturation = 1.000000
[1:41:01.698798789] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: Contrast = 1.000000
[1:41:01.698840990] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: Brightness = 0.000000
[1:41:01.698877617] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: AwbMode = 0
[1:41:01.698910745] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: Sharpness = 1.000000
[1:41:01.698947187] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: ExposureValue = 0.000000
[1:41:01.698983203] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: AeExposureMode = 0
[1:41:01.699014646] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: FrameDurationLimits = [ 33333, 33333 ]
[1:41:01.699050903] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: AeMeteringMode = 0
[1:41:01.699082938] [2145]  INFO IPARPI raspberrypi.cpp:626 Request ctrl: NoiseReductionMode = 1
ffmpeg version 4.3.3-0+rpt2+deb11u1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10 (Raspbian 10.2.1-6+rpi1)
  configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/arm-linux-gn>
  WARNING: library configuration mismatch
  avutil      configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  avcodec     configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  avformat    configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  avdevice    configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  avfilter    configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  avresample  configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  swscale     configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  swresample  configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  postproc    configuration: --prefix=/usr --extra-version=0+rpt2+deb11u1 --toolchain=hardened --incdir=/usr/include/>
  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
Input #0, h264, from 'pipe:':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x720, 30 fps, 30 tbr, 1200k tbn, 60 tbc
default: No such process


  


  It seems to interpret the command differently and not treat default within the ffmpeg call as a parameter.

  


• FFmpeg return 'invalid argument' only for some runs, even though it is the same code

  20 septembre 2021, par Gustavo Marinho

  I have code in Python where I need to use FFmpeg to merge an audio and a video downloaded using pytube together :

  


  for video in p.videos:
    video.streams.filter(file_extension='mp4',resolution='480p')[0].download(parent_dir+'/mp4/processing/video')
    print(video.streams.filter(only_audio=True)[1].download(parent_dir+'/mp4/processing/audio'))

    subprocess.run([

        r'c:\FFmpeg\bin\ffmpeg', '-i',
        os.path.join(parent_dir+'/mp4/processing/video',video.streams.filter(file_extension='mp4',resolution='480p')[0].default_filename)
        ,'-i',
        os.path.join(parent_dir+'/mp4/processing/audio',video.streams.filter(only_audio=True)[1].default_filename),
        '-c:v','copy','-c:a','copy',
        os.path.join(parent_dir+'/mp4',video.streams.filter(file_extension='mp4',resolution='480p')[0].title+'.mp4')

    ])


  


  I thought the code was working perfectly, but in some cases, the FFmpeg returns "invalid argument", like this example :

  


  ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:/videos/mp4/processing/video\Dropkick Murphys - Rose Tattoo (Video).mp4':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6avc1mp41
    creation_time   : 2020-04-04T10:16:52.000000Z
  Duration: 00:05:26.08, start: 0.000000, bitrate: 557 kb/s
  Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 854x480 [SAR 1:1 DAR 427:240], 7 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
    Metadata:
      creation_time   : 2020-04-04T10:16:52.000000Z
      handler_name    : ISO Media file produced by Google Inc.
      vendor_id       : [0][0][0][0]
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'D:/videos/mp4/processing/audio\Dropkick Murphys - Rose Tattoo (Video).mp4':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6mp41
    creation_time   : 2020-04-04T10:16:00.000000Z
  Duration: 00:05:26.12, start: 0.000000, bitrate: 129 kb/s
  Stream #1:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 3 kb/s (default)
    Metadata:
      creation_time   : 2020-04-04T10:16:00.000000Z
      handler_name    : ISO Media file produced by Google Inc.
      vendor_id       : [0][0][0][0]
D:/videos/mp4\Dropkick Murphys - "Rose Tattoo" (Video).mp4: Invalid argument


  


  For some reason, the FFmpeg say that my output name is invalid, but I don't understand why, given that I ran the code multiple times before and it worked perfectly.

  


• Where are there working exdamples for QSV enabled ffmpeg filters ?

  2 août 2021, par Bart Lederman

  I'm re-posting this question in a modified form because I'm told that stack overflow doesn't allow anyone to ask for the location of documentation. So now I'm not asking for documentation, I just want working examples of how the QSV enabled filters are used, with a specific question on why async doesn't work with vpp_qsv .

  


  I have a PC running Windows which is QSV capable. I've found the codec and at least one QSV filter which really speed up decoding and encoding AVC (x264) videos.

  


  But the experience is extremely aggravating, as I cannot find a list anywhere that I can find on what the filters and arguments actually are.

  


  The closest I've come for vpp_qsv is this :

  


  https://github.com/FFmpeg/FFmpeg/blob/master/libavfilter/vf_vpp_qsv.c

  


  It's a good start, but it has no examples of what the arguments actually are.
Source code doesn't explain how the filters actually work. However, this source code does say that async_depth is a valid qualifier.

  


  The few examples I've been able to find in various places (including stackoverflow) do not work.

  


  By experimentation, I've found that this works :

  


  ffmpeg -hide_banner -init_hw_device qsv=qsv -hwaccel qsv -i "input.mts" -c:a aac -c:v h264_qsv -preset veryslow -vf "vpp_qsv=cw=628:cx=0:w=640:h=480" -q:v 30 "output.mp4"

  


  I can add other things to the filter. For example :

  


  "vpp_qsv=deinterlace=2:cw=628:cx=0:w=640:h=480"

  


  will work. However, this will NOT work :

  


  "vpp_qsv=cw=628:cx=0:w=640:h=480:async_depth=4"

  


  even though there are examples posted that say it will.

  


  [Parsed_vpp_qsv_0 @ 0000000005bff8c0] Option 'async_depth' not found [AVFilterGraph @ 0000000007327dc0] Error initializing filter 'vpp_qsv' with args 'cw=628:cx=0:w=640:h=480:async_depth=4' Error reinitializing filters ! Failed to inject frame into filter network : Option not found Error while processing the decoded data for stream #0:0

  


  I also have been unable to find good examples of using more than one QSV enabled filter at the same time.

  


  I'm using the newest version of ffmpeg I can find :

  


  I :\ffmpeg -version ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10.2.0 (Rev6, Built by MSYS2 project) configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml 2 —enable-gmp —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enab le-libcaca —enable-sdl2 —enable-libdav1d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —ena ble-libaom —enable-libopenjpeg —enable-libvpx —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-lib zimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-libglslang - -enable-vulkan —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine - -enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libv orbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100

  


  and the output of "ffmpeg -filters" says I have the various QSV enabled filters on my system.

  


  I have searched dozens and dozens of sites including Intel and ffmpeg.org and I cannot find a clear explanation of how the various QSV enabled filters work, with examples that will actually execute on my system. Could someone please point me to where this filter is explained ? (This is NOT, I repeat, NOT a banned request for documentation. I'm asking how to use a specific qualifier in a specific filter.)