[FFmpeg-user] blackframe and blackdetect

[LsBender]

Thank for your help Clement,
I tried your command but i have this: "unrecognized option '-vf'":
/
lefebvre at lefebvre-laptop:~/Bureau$ ffmpeg -i test.avi -vf blackframe=98:32
-f null-
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1.3, Copyright (c) 2000-2009
Fabrice Bellard, et al.
  configuration: --extra-version=4:0.5.1-1ubuntu1.3 --prefix=/usr
--enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib
--enable-libgsm --enable-libschroedinger --enable-libspeex
--enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib
--disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl
--enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394
--enable-shared --disable-static
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 1 / 52.20. 1
  libavformat   52.31. 0 / 52.31. 0
  libavdevice   52. 1. 0 / 52. 1. 0
  libavfilter    0. 4. 0 /  0. 4. 0
  libswscale     0. 7. 1 /  0. 7. 1
  libpostproc   51. 2. 0 / 51. 2. 0
  built on Dec 21 2011 18:37:21, gcc: 4.4.3
Input #0, avi, from 'test.avi':
  Duration: 01:02:12.22, start: 0.000000, bitrate: 1012 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 704x576 [PAR 1:1 DAR 11:9], 12.50
tbr, 12.50 tbn, 12.50 tbc
    Stream #0.1: Audio: mp2, 32000 Hz, stereo, s16, 64 kb/s
ffmpeg: unrecognized option '-vf'/

I already saw some post about blackframe and how to list them, but there are
listing blackframe while ffmpeg is encoding. And in my case, I don't want to
encode. I just want to collect blackframe informations about my video
without encoding. Is it possible?!

Thanks,
Marc

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