bnovc @ ~/samples $ ffmpeg -i robot.avi -vcodec png -vframes 1 -an -f rawvideo -s 160x112 test.png
FFmpeg version SVN-r9153, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --cc=cc --prefix=/usr/local --make=gmake --disable-debug --enable-memalign-hack --enable-shared --enable-pp --extra-cflags=-fPIC -DPIC -O2 -fno-strict-aliasing -pipe  -I/usr/local/include --extra-ldflags=-L/usr/local/lib --extra-libs=-pthread --enable-gpl --enable-pthreads --enable-swscaler --enable-liba52 --enable-liba52bin --disable-mmx --enable-libmp3lame --enable-libogg --disable-ffplay --enable-libvorbis
  libavutil version: 49.4.0
  libavcodec version: 51.40.4
  libavformat version: 51.12.1
  built on Jul 27 2007 13:47:23, gcc: 3.4.6 [FreeBSD] 20060305
Input #0, mpeg, from 'robot.avi':
  Duration: 00:00:00.3, start: 0.177778, bitrate: 4905 kb/s
  Stream #0.0[0x1c0]: Audio: mp2, 32000 Hz, mono, 32 kb/s
  Stream #0.1[0x1e0]: Video: mpeg1video, yuv420p, 160x112, 104857 kb/s, 25.00 fps(r)
zsh: segmentation fault (core dumped)  ffmpeg -i robot.avi -vcodec png -vframes 1 -an -f rawvideo -s 160x112 test.pn