[MPlayer-users] (no subject)

[Nico Sabbi]

nick.rienties at home.nl wrote:

>Hi,
>
>I recently start using Mencoder to make backups of my DVD's. The command I use to encode a DVD:
>
>mencoder -dvd-device /mnt/dvd/ dvd://1 -oac copy -vf crop=xxx:xxx:xx:xx -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=9999:vhq:vpass=1 -o ~/movie.avi
>
>mencoder -dvd-device /mnt/dvd/ dvd://1 -oac copy -vf crop=xxx:xxx:xx:xx -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=9999:vhq:vpass=2 -o ~/movie.avi
>
>I encoded several movies with these setting, which gave the following result:
>
>Playing American History X.avi.
>AVI file format detected.
>AVI: ODML: Building odml index (2 superindexchunks)
>VIDEO:  [DIVX]  704x576  24bpp  25.000 fps  4221.6 kbps (515.3 kbyte/s)
>Clip info:
>Software: MEncoder 1.0pre5-3.3.4
>
>Playing Hero.avi.
>AVI file format detected.
>AVI: ODML: Building odml index (2 superindexchunks)
>VIDEO:  [DIVX]  720x432  24bpp  25.000 fps  5310.8 kbps (648.3 kbyte/s)
>Clip info:
>Software: MEncoder 1.0pre5-3.3.4
>
>Playing Kill Bill 2.avi.
>AVI file format detected.
>AVI: ODML: Building odml index (2 superindexchunks)
>VIDEO:  [DIVX]  720x416  24bpp  25.000 fps  2612.0 kbps (318.8 kbyte/s)
>Clip info:
>Software: MEncoder 1.0pre5-3.3.4
>
>Question is:
>
>Why is there so much difference in the used bitrate?
>Is the bitrate setting over kill? I do care about filesize, 4485 MB is the max since the avi should fit on a dvd5.
>Are there any other settings that I could use in the encoding command?
>
>Kind Regards,
>Nick
>
>  
>

because lavc used all the bandwidth it needed, so it saturated.
If you want to fill all that space the vbitrate setting is nonsense:
you should use vqscale=2 and a single pass instead. And don't forget
to add :autoaspect, or you will have egg-heads :)