[FFmpeg-user] blackframe and blackdetect

[Lou]

On Wed, 14 Mar 2012 03:07:31 -0700 (PDT)
LsBender <mlefe74 at gmail.com> wrote:

> 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

Your version of ffmpeg from the Ubuntu repository does not have
filtering capability. You can compile the most recent FFmpeg to gain
filtering, bug fixes, and other features. For step-by-step compiling
instructions see:

HOWTO: Install and use the latest FFmpeg and x264 on Ubuntu
http://ubuntuforums.org/showthread.php?t=786095