[MPlayer-users] help wanted: using mencoder to make NTSC DVD from transport stream

[Aaron Peterson]

>   mencoder $i -vf scale=720:-2,expand=720:480 -o dvd.mpg \
>               -vc ffmpeg12,mpeg12, \
>               -of mpeg -mpegopts format=dvd \
>               -ovc lavc -lavcopts vcodec=mpeg2video:vbitrate=4000:keyint=18:mbd=2:aspect=16/9 -oac copy

Also, if your example were for video with 4/3 aspect, how would you
change -vf scale=720:-2,expand=720:480 and still be dvd compliant?  My
guess is -vf scale=720:-2,expand=640:480, but that is an uneducated
guess and I would prefer educated instruction :-)