Here are some Mencoder command lines from me for you to play with.
Determine the size of black areas and display included audio streams through the verbose mode option.
Investigate the console output afterwards.
mplayer VTS_01_1.VOB -v -vop cropdetect
generate DivX5 Movies with MP3 Sound in VBR mode:
mencoder VTS_01_1.VOB -aid 128 -mc 0 -oac mp3lame -lameopts vbr=2:q=6 -ovc lavc -lavcopts vcodec=mpeg4:vqscale=5:vqmin=2:vmax_b_frames=4:v4mv:vhq:trell:mbd=2:vlelim=-4:vcelim=9:lumi_mask=0.05:dark_mask=0.01:aspect=16/8 -af volume=+10dB -srate 44100 -vop pp=fd,scale=528:416:0:2,crop=720:436:0:74 -o movie.avi
-mc 0 is needed when encoding with libmp3lame (not necessary with -oac lavc), otherwiese it'll lose a/v sync.
-vqscale sets the VBR quality
If you have several parts, instead of encoding directly from the DVDROM:
JOIN movie_01.avi movie_02.avi AS movie_noidx.avi
mencoder movie_noidx.avi -noidx -oac copy -ovc copy -o movie.avi
If you want to generate KVCD type MPEG files start experimenting with this command line.
But MPEG output format support is completely borken in mencoder v0.91. It will work only with v1.0 and above.
mencoder VTS_01_1.VOB -aid 129 -oac lavc -ovc lavc -lavcopts acodec=mp2:abitrate=128:vcodec=mpeg1video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,12,14,18,27,29,34,37,38,22,26,27,31,36,37,38,40,26,27,29,36,39,38,40,48,27,29,34,37,38,40,48,58,29,34,37,38,40,48,58,69,34,37,38,40,48,58,69,79:inter_matrix=16,18,20,22,24,26,28,30,18,20,22,24,26,28,30,32,20,22,24,26,28,30,32,34,22,24,26,30,32,32,34,36,24,26,28,32,34,34,36,38,26,28,30,32,34,36,38,40,28,30,32,34,36,38,42,42,30,32,34,36,38,40,42,44:vqscale=5:vqmin=2:keyint=25:vstrict=-1:vrc_buf_size=327:vhq:trell:mbd=2:aspect=16/9 -af volume=+15dB,resample=44100:0:2 -vop pp=fd,scale=528:416:0:2,crop=720:432:0:70 -of mpeg -o movie_01_1.mpg > NIL:
Pegasos PPC