I am trying to transcode media from a vob with 3 sound tracks to an avi file with one video track and one sound track, and an mp3 file with another sound track. With FFMpeg CVS 2005 05 01, it worked perfect. I have not spotted the exact day when this functionality broke, but at least as of 2005 06 01, ffmpeg produces the following output and exits. ffmpeg -i /home/ren/movie.vob -f avi -vtag "DIVX" -deinterlace -vcodec mpeg4 -cropleft 8 -cropright 8 -croptop 4 -cropbottom 4 -s 512x384 -g 300 -me epzs -qscale 4 -mbd 2 -trell -cmp 3 -subcmp 3 -mbcmp 3 -4mv -acodec mp3 -ab 160 -ar 48000 -ac 2 -map 0.0:0.0 -map 0.1:0.1 /home/ren/movie.avi -acodec mp3 -ab 160 -ar 48000 -ac 2 -map 0.3:1.0 /home/ren/movie.mp3 ffmpeg version 0.4.9-pre1, build 4757, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-a52 --enable-mp3lame --enable-pp --enable-gpl --disable-debug --disable-ffserver --disable-ffplay built on Jul 9 2005 21:14:59, gcc: 3.3.5 (Debian 1:3.3.5-13) Input #0, mpeg, from '/home/ren/movie.vob': Duration: 00:21:19.7, start: 0.048356, bitrate: 5802 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576, 25.00 fps, 7500 kb/s Stream #0.1[0x80]: Audio: ac3, 48000 Hz, stereo, 192 kb/s Stream #0.2[0x82]: Audio: ac3, 48000 Hz, stereo, 192 kb/s Stream #0.3[0x81]: Audio: ac3, 48000 Hz, stereo, 192 kb/s Could not find sync stream #1.0 (last test with ffmpeg CVS 2005 07 09) Renaud