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• fftools/ffmpeg : move a block to a more appropriate place

  16 mai 2023, par Anton Khirnov

  fftools/ffmpeg : move a block to a more appropriate place
  New placement requires fewer explicit conditions and is easier to
  
  understand.
  
  The logic should be exactly equivalent, since this is the only place
  
  where eof_reached is set for decoding.
  

  • [DH] fftools/ffmpeg.c

• configure : Pass CFLAGS_HEADERS through the right CFLAGS filter

  4 décembre 2016, par Diego Biurrun

  configure : Pass CFLAGS_HEADERS through the right CFLAGS filter
  The generic parameter names used for CFLAGS in configure must be filtered
  
  for each compiler and replaced by the equivalent flag for that compiler.
  

  • [DBH] configure

• capture DV video and audio with ffmpeg and dshow

  18 novembre 2016, par andrixnet

  Trying to capture video and audio from a DV camera, using ffmpeg, I got into a problem.
  Before anything, I first tried to see (and hear) with ffplay.

  ffmpeg version :

  ffplay version 3.0 Copyright (c) 2003-2016 the FFmpeg developers
  
    built with gcc 5.3.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55. 17.103 / 55. 17.103
  
    libavcodec     57. 24.102 / 57. 24.102
  
    libavformat    57. 25.100 / 57. 25.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 31.100 /  6. 31.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100

  Getting list of DirectShow devices :
  ffplay -hide_banner -f dshow -list_devices true -i dummy

  [dshow @ 035c4240] DirectShow video devices (some may be both video and audio devices)
  
  [dshow @ 035c4240]  "Microsoft DV Camera and VCR" sq=    0B f=0/0
  
  [dshow @ 035c4240]     Alternative name "@device_pnp_\\?\avc#canon&mvx3i&camcorder&dv#5126800000850000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
  
  [dshow @ 035c4240] DirectShow audio devices
  
  [dshow @ 035c4240]  "1-ESI MAYA44 Ch12"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\1-ESI MAYA44 Ch12"
  
  [dshow @ 035c4240]  "2-ESI MAYA44 Ch34"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\2-ESI MAYA44 Ch34"
  
  [dshow @ 035c4240]  "3-ESI MAYA44 Ch1234"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\3-ESI MAYA44 Ch1234"
  
  [dshow @ 035c4240]  "Realtek HD Audio Input"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Realtek HD Audio Input"
  
  [dshow @ 035c4240]  "Realtek HD Digital input"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Realtek HD Digital input"
  
  dummy: Immediate exit requested

  I can use VLC with "Capture device" as input, selecting "Microsoft DV Camera and VCR" as video device and leaving "Default" as audio device and I get both video and audio.

  With ffmpeg I get only video stream, no audio.

  C:\>ffplay -hide_banner -f dshow -i video="Microsoft DV Camera and VCR"
  
  Input #0, dshow, from 'video=Microsoft DV Camera and VCR':B f=0/0
  
    Duration: N/A, start: 0.010035, bitrate: N/A
  
      Stream #0:0: Video: dvvideo (dvsd / 0x64737664), yuv420p, 720x576 [SAR 16:15
  
   DAR 4:3], 25 tbr, 10000k tbn, 25 tbc
  
     0.48 M-V:  0.013 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

  I don’t know how to tell ffmpeg the equivalent of "Default" audio device as VLC recognizes it.

  Device options show there are 2 pins for video device (DV device has both video and audio) but how can I tell ffmpeg such that it captures both video and audio ?

  C:\>ffplay -hide_banner -f dshow -list_options true -i video="Microsoft DV Camera and VCR"
  
  [dshow @ 035c3260] DirectShow video device options (from video devices)
  
  [dshow @ 035c3260]  Pin "DV Vid Out" (alternative pin name "0")
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x480 fps=29.97 max s=720x480 fps=2
  
  9.97
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x576 fps=25 max s=720x576 fps=25
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x480 fps=29.97 max s=720x480 fps=2
  
  9.97
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x576 fps=25 max s=720x576 fps=25
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x480 fps=29.97 max s=720x480 fps=2
  
  9.97
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x576 fps=25 max s=720x576 fps=25
  
  [dshow @ 035c3260]  Pin "DV A/V Out" (alternative pin name "1")
  
  video=Microsoft DV Camera and VCR: Immediate exit requested f=0/0

  Thank you.