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• FFMPEG profile-level-id size is invalid

  18 février 2020, par Mulham Aryan

  I’m trying to record a RTSP streaming from JVC KY-PZ 100.
  So for that i’m using ffmpeg with some parameters like segmentation, hls, ts, m3u8 etc ...
  i’m always getting an error The profile-level-id field size is invalid (41) and Error parsing AU headers

  This is the output of FFPROBE to debug the RTSP

  ffprobe -loglevel verbose  -i rtsp://jvc:0000@192.168.0.124:554/stream
  
  
  
  ffprobe version 4.2.2 Copyright (c) 2007-2019 the FFmpeg developers
  
    built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.0.1.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.0.1.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --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. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  [tcp @ 0x7fa99ee001c0] Starting connection attempt to 192.168.0.124 port 554
  
  [tcp @ 0x7fa99ee001c0] Successfully connected to 192.168.0.124 port 554
  
  [rtsp @ 0x7fa99f807200] SDP:
  
  v=0
  
  o=- 1581949225269357 1 IN IP4 192.168.0.124
  
  s=KY-PZ100
  
  i=KY-PZ100
  
  t=0 0
  
  a=tool:LIVE555 Streaming Media v2013.10.03
  
  a=type:broadcast
  
  a=control:*
  
  a=range:npt=0-
  
  a=x-qt-text-nam:KY-PZ100
  
  a=x-qt-text-inf:KY-PZ100
  
  m=audio 0 RTP/AVP 96
  
  c=IN IP4 0.0.0.0
  
  b=AS:96
  
  a=rtpmap:96 mpeg4-generic/48000/2
  
  a=fmtp:96 streamtype=5;profile-level-id=41;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1190
  
  a=control:track1
  
  m=video 0 RTP/AVP 97
  
  c=IN IP4 0.0.0.0
  
  b=AS:1500
  
  a=rtpmap:97 H264/90000
  
  a=fmtp:97 packetization-mode=1;profile-level-id=4D401E;sprop-parameter-sets=Z01AHqtgUBf8uAqQEBAUAAAPpAADqYOlABksDcoUQDuLFIs=,aM48gA==
  
  a=control:track2
  
  
  
  [rtsp @ 0x7fa99f807200] The profile-level-id field size is invalid (41)
  
  [rtsp @ 0x7fa99f807200] setting jitter buffer size to 500
  
      Last message repeated 1 times
  
  [rtsp @ 0x7fa99f807200] Error parsing AU headers
  
      Last message repeated 4 times
  
  [h264 @ 0x7fa9a0806600] Reinit context to 640x368, pix_fmt: yuv420p
  
  [rtsp @ 0x7fa99f807200] Error parsing AU headers
  
      Last message repeated 235 times
  
  [rtsp @ 0x7fa99f807200] max_analyze_duration 5000000 reached at 5005000 microseconds st:1
  
  Input #0, rtsp, from 'rtsp://jvc:0000@192.168.0.124:554/stream':
  
    Metadata:
  
      title           : KY-PZ100
  
      comment         : KY-PZ100
  
    Duration: N/A, start: 0.066733, bitrate: N/A
  
      Stream #0:0: Audio: aac, 48000 Hz, stereo, fltp
  
      Stream #0:1: Video: h264 (Main), 1 reference frame, yuv420p(tv, bt709, progressive, left), 640x360 (640x368) [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

• How to create a virtual webcamera device with ability to stream a video file in linux

  27 février 2020, par Vlad

  I need to create a script, that will stream a video file to virtual webcam, and make a virtual webcam accessible not only with ffplay /dev/videoX etc. but also with different applications like Cheese(default Ubuntu webcam app), Chrome, Discord and others.
  I tried solutions that use v4l2loopback and ffmpeg, but this doesn’t work in Chrome/Discord/Cheese/...
  Now I have several webcams :

  1. /dev/video0 - Native laptop camera
  2. /dev/video1 - A camera created with DroidCamX to use phones camera
     as laptop camera
  3. /dev/video2 - v4l2loopback camera

  When I try to stream a video file to /dev/video2 with ffmpeg, this message is showing up :

  user@hostname:~/Videos$ sudo ffmpeg -re -i "video.mp4" -map 0:0 -f v4l2 /dev/video2
  
  ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  
    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, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.83.100
  
    Duration: 02:09:13.10, start: 0.000000, bitrate: 279 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 798x598 [SAR 1:1 DAR 399:299], 146 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, s16p, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native))
  
  Press [q] to stop, [?] for help
  
  [v4l2 @ 0x5609f238c280] ioctl(VIDIOC_G_FMT): Invalid argument
  
  Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
  
  Error initializing output  stream 0:0
  
  Conversion failed!

  But when I run that command with /dev/video0, a stream starts and shows with ffplay /dev/video0. But applications, except Mozilla Firefox cannot detect /dev/video0 stream.
  So how can I create a virtual camera device properly in order to stream a video file to it and use as a camera in various applications ?

  I have Linux Ubuntu 18.04.4 LTS, kernel version : 5.3.0-40-generic, architecture : x86-64.
  Any help appreciated !

• Invalid data found when processing file with ffmpeg API

  18 septembre 2019, par Timmy K

  I have an m4a file containing two AAC-encoded audio streams. I want to decode it on Android with the ffmpeg library. However, avformat_open_input() fails with "Invalid data found when processing input".

  This file was created (i.e. the audio data encoded) with the same library.

  I’ve double-checked the accuracy of the file path I provide to the call.

  The file doesn’t appear to be corrupt. It plays with QuickTime player, and ffprobe reports the output below.

  I’ve looked at the source in ffmpeg’s utils.c but it’s not clear at which of several points (including nested calls) this invalidity of the data in the file is being decided.

  FFPROBE OUTPUT
  
  built with gcc 7.2.0 (crosstool-NG fa8859cb)
  
  configuration: --prefix=/home/ubuntu/miniconda3 --disable-doc --enable- 
  
  shared --extra-cflags='-fPIC -I/home/ubuntu/miniconda3/include' --extra-
  
  cxxflags='=-fPIC' --extra-libs='-L/home/ubuntu/miniconda3/lib -lz' --enable-
  
  pic --disable-static --disable-gpl --disable-nonfree --disable-openssl --
  
  enable-libvpx --cc=/opt/conda/conda- 
  
  bld/ffmpeg_1530807717919/_build_env/bin/x86_64-conda_cos6-linux-gnu-cc --cxx=/opt/conda/conda-bld/ffmpeg_1530807717919/_build_env/bin/x86_64-conda_cos6-linux-gnu-c++ --enable-libopus
  
      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
  
      libswscale            4.    8.100 /    4.    8.100
  
      libswresample     2.    9.100 /    2.    9.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'recording-2019-09-03-110626.m4a':
  
      Metadata:
  
          major_brand         : isom
  
          minor_version     : 512
  
          compatible_brands: isomiso2mp41
  
          encoder                 : Lavf58.27.103
  
      Duration: 00:00:05.04, start: 0.000000, bitrate: 637 kb/s
  
          Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 314 kb/s (default)
  
          Metadata:
  
              handler_name        : SoundHandler
  
          Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 315 kb/s (default)
  
          Metadata:
  
              handler_name        : SoundHandler

  The call that fails with "invalid data found" is :

   if ( (ret = avformat_open_input( &inputFormatContext, filePath, 0, 0)) < 0 )
  
    {
  
      __android_log_print(ANDROID_LOG_DEBUG, "MyTag", "Could not open input file '%s' error %s ", filePath, av_err2str(ret) );
  
        return false;
  
    }

  I would expect this to "just work" since I encoded and muxed the two audio tracks with the same build of the ffmpeg libraries.

  When I built the libraries, I configured the build with :

  —enable-decoder=aac,pcm_s16le —enable-encoder=aac,pcm_s16le —enable-demuxer=mp4,wav —enable-muxer=mp4,wav —enable-protocol=file,http

  When I iterate through the codecs using av_codec_iterate() and look for supported sample rates I see :

  Found codec aac
  
  supported sample rate 96000
  
  supported sample rate 88200
  
  supported sample rate 64000
  
  supported sample rate 48000
  
  supported sample rate 44100
  
  supported sample rate 32000
  
  supported sample rate 24000
  
  supported sample rate 22050
  
  supported sample rate 16000
  
  supported sample rate 12000
  
  supported sample rate 11025
  
  supported sample rate 8000
  
  supported sample rate 7350
  
  Found codec pcm_s16le
  
  Found codec aac
  
  Found codec pcm_s16le 

  Each codec appears twice, which I thought was maybe the encoder and decoder. But I note that only one has any supported sample rates. My test files’ sample rate is 44100.

  Any thoughts on what other things I can check for ? I wondered whether I should create and pass an AVInputFormat object explicitly to the call, based upon what I know about the contents of the file. But I don’t know how to construct one.