Public bug reported:

ffmpeg floods my log files with startup messages. This makes it very difficult 
to see what ffmpeg is actually doing. The startup message should be removed.
This problem has been discussed by others before at  
http://stackoverflow.com/questions/5596135/run-ffmpeg-without-outputting-configuration-information
 
and reported at https://ffmpeg.org/trac/ffmpeg/ticket/988 .
Nevertheless the problem still persists and needs to be fixed.

Example follows below:

computer:~$ ffmpeg -loglevel quiet
ffmpeg version 0.7.3-4:0.7.3-0ubuntu0.11.10.1, Copyright (c) 2000-2011 the 
Libav developers

    built on Jan 4 2012 16:21:50 with gcc 4.6.1
    configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' --arch=i386 
--prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared 
--disable-static
    WARNING: library configuration mismatch
    avutil configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' 
--arch=i386 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 
--shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static 
--disable-ffmpeg --disable-ffplay
    avcodec configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' 
--arch=i386 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 
--shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static 
--disable-ffmpeg --disable-ffplay
    avformat configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' 
--arch=i386 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 
--shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static 
--disable-ffmpeg --disable-ffplay
    avdevice configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' 
--arch=i386 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 
--shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static 
--disable-ffmpeg --disable-ffplay
    avfilter configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' 
--arch=i386 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 
--shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static 
--disable-ffmpeg --disable-ffplay
    swscale configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' 
--arch=i386 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 
--shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static 
--disable-ffmpeg --disable-ffplay
    postproc configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' 
--arch=i386 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm 
--enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx 
--enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 
--shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static 
--disable-ffmpeg --disable-ffplay
    libavutil 51. 7. 0 / 51. 7. 0
    libavcodec 53. 6. 0 / 53. 6. 0
    libavformat 53. 3. 0 / 53. 3. 0
    libavdevice 53. 0. 0 / 53. 0. 0
    libavfilter 2. 4. 0 / 2. 4. 0
    libswscale 2. 0. 0 / 2. 0. 0
    libpostproc 52. 0. 0 / 52. 0. 0

Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] 
outfile}...

Use -h to get full help or, even better, run 'man ffmpeg'

** Affects: ffmpeg (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/930040

Title:
  ffmpeg shows too much output at start up

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