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• building ffmpeg with openh264 configure results in h264 decoder DISabled ?

  7 juillet 2018, par hal497

  I’ve got openh264, built from source, installed locally,

  pkg-config --libs --cflags openh264
  
          -I/usr/local/include -L/usr/local/lib64 -lopenh264

  Building ffmpeg from src

  cd ffmpeg-git
  
      git checkout origin/release/4.0
  
      git clean -xfd
  
      git reset --hard
  
      git pull
  
      git log | head
  
          commit b5106c5aa2ddd00f0c0452432ba8e683a9a06b6f
  
          Author: Aman Gupta <aman@tmm1.net>
  
          Date:   Mon Jun 11 00:43:31 2018 -0700
  
  
  
              avformat/mpegts: parse large PMTs with multiple tables
  
  
  
              In 9152c1e4955, the mpegts parser was taught how to parse
  
              PMT sections which contained multiple tables. That commit
  
              fixed parsing of PMT packets from some cable providers,
  
              which included a special SCTE table (0xc0) before the

  with a simple config to ENABLE libopenh264 use

  ./configure --enable-ffmpeg \
  
  --prefix=/usr/local --libdir=/usr/local/lib64 \
  
  --enable-shared --disable-static --enable-rpath \
  
  --enable-libopenh264 --disable-libx264
  
  make

  checking the build

  ldd ./ffmpeg | egrep "h264|x264"
  
      (empty)

  there are mixed references to libopenh264 and libx264 (despite my config),

  for l in lib*/*so; do echo $l; ldd $l | egrep "264"; done
  
      libavcodec/libavcodec.so
  
              libopenh264.so.4 => /usr/local/lib64/libopenh264.so.4 (0x00007f82dd74d000)
  
      libavdevice/libavdevice.so
  
              libx264.so.152 => /usr/lib64/libx264.so.152 (0x00007f0575c6f000)
  
      libavfilter/libavfilter.so
  
              libx264.so.152 => /usr/lib64/libx264.so.152 (0x00007f85bae41000)
  
      libavformat/libavformat.so
  
              libx264.so.152 => /usr/lib64/libx264.so.152 (0x00007ff105701000)
  
      libavutil/libavutil.so
  
      libswresample/libswresample.so
  
      libswscale/libswscale.so

  and

  ./ffmpeg -decoders | grep h264

  shows h264 as a disabled decoder, (... —enable-libx264 —disable-libopenh264 ...)

  ffmpeg version n4.0.1-5-gb5106c5aa2 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 8 (SUSE Linux)
  
    configuration: --enable-ffmpeg --prefix=/usr/local --libdir=/usr/local/lib64 --enable-shared --disable-static --enable-optimizations --enable-rpath --disable-doc --enable-nonfree --enable-libopenh264 --disable-libx264
  
    WARNING: library configuration mismatch
  
    avutil      configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
  
    avcodec     configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
  
    avformat    configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
  
    avdevice    configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
  
    avfilter    configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
  
    swscale     configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
  
    swresample  configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
  
    libavutil      56. 14.100 / 56. 14.100
  
    libavcodec     58. 18.100 / 58. 18.100
  
    libavformat    58. 12.100 / 58. 12.100
  
    libavdevice    58.  3.100 / 58.  3.100
  
    libavfilter     7. 16.100 /  7. 16.100
  
    libswscale      5.  1.100 /  5.  1.100
  
    libswresample   3.  1.100 /  3.  1.100
  
   VFS..D h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
  
   V..... h264_v4l2m2m         V4L2 mem2mem H.264 decoder wrapper (codec h264)

  The question is — why ? And what needs to change so that libopenh264 is consistently & correctly used ?

• How to convert audio stream from PureTool/CVS video ?

  1er janvier 2013, par Mark

  I apologize if there is a better place to post this. I recently came across a couple CVS single-use video cameras that I had been using back in 2005. I still have the USB cable I made and now that I've switched to Mac I can use Puretool to extract the old videos from the cameras. The problem I'm having is that I can only hear the audio when viewing the videos with VLC media player. I read on PureTools site, a common problem is that the audio codec used is incompatible with Quicktime and the audio stream needs to be converted. There is a link on their site to a program called FixSound which is purported to fix this, but the link is dead and I've been unable to find any further information about this. If anyone could point me in the right direction, I'd be very grateful. All the videos I'm dealing with are from the first year of my son's life and I'd really like to be able to archive them in a more uniform format. I would think this would be possible to do using Adobe Audition or some other program in Adobe's CS6 Master Collection but I've only dealt with Photoshop, Illustrator, Dreamweaver, Flash & Fireworks. I have no experience with audio or video yet.

  Thanks,

  Mark

• Can't record S-Video with avconv

  16 avril 2014, par Ertain

  I've been trying to record feed from my S-Video cable using avconv. I am able to record composite video with avconv, but the quality isn't the best. To set the input, I use v4l2-ctl -i $n, where $n is either 0 for composite, or 1 for S-Video. I tried to use v4l2-ctl -i 1 to set the input, but that doesn't work. Oddly enough, when I use tvtime or qv4l2 I can view the video.

  I am able to record audio, just not the video. In tvtime I can get audio as well as video. Also, I was able to record the S-Video with ffmpeg using the -channel option. ffmpeg, btw, can't record the audio, and recording the separate audio isn't an option.

  Edit : as per Anton's request, here's the command I use to capture video with avconv.

  avconv -f video4linux2 -i /dev/video0 -f alsa -i hw:2,0 -vcodec mpeg4 -vtag xvid -b 8000k -r 30000/1001 -acodec \
  
  libmp3lame -ar 48000 -ac 2 -ab 192k -aspect 16:9 -vf yadif=0,scale=1200:800 -y test.avi

  And here's the output from this command :

  avconv version 0.8.6-6:0.8.6-0ubuntu0.12.10.1, Copyright (c) 2000-2013 the Libav developers
  
    built on Apr  2 2013 17:02:16 with gcc 4.7.2
  
  [video4linux2 @ 0x982340] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, video4linux2, from '/dev/video0':
  
    Duration: N/A, start: 1368113780.210591, bitrate: 165722 kb/s
  
     Stream #0.0: Video: rawvideo, yuyv422, 720x480, 165722 kb/s, 29.97 tbr, 1000k tbn, 29.97 tbc
  
  [alsa @ 0x982ba0] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, alsa, from 'hw:2,0':
  
    Duration: N/A, start: 854.715783, bitrate: N/A
  
      Stream #1.0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
  
  Incompatible pixel format 'yuyv422' for codec 'mpeg4', auto-selecting format 'yuv420p'
  
  [buffer @ 0x9930a0] w:720 h:480 pixfmt:yuyv422
  
  [yadif @ 0x997960] mode:0 parity:-1 auto_enable:0
  
  [yadif @ 0x997960] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'Parsed filter 0 yadif'
  
  [scale @ 0x985a80] w:720 h:480 fmt:yuyv422 -> w:720 h:480 fmt:yuv420p flags:0x4
  
  [scale @ 0x998000] w:720 h:480 fmt:yuv420p -> w:1200 h:800 fmt:yuv420p flags:0x4
  
  Output #0, avi, to 'test.avi':
  
    Metadata:
  
      ISFT            : Lavf53.21.1
  
      Stream #0.0: Video: mpeg4, yuv420p, 1200x800 [PAR 32:27 DAR 16:9], q=2-31, 8000 kb/s, 29.97 tbn, 29.97 tbc
  
      Stream #0.1: Audio: libmp3lame, 48000 Hz, 2 channels, s16, 192 kb/s
  
  Stream mapping:
  
        Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
  
        Stream #1:0 -> #0:1 (pcm_s16le -> libmp3lame)