[MPlayer-users] Re: Adding subtitles to .mpg for DVD

[John Brown]

>On Thu, 27 Apr 2006 15:23:04 +0000 (UTC), wrote:
>
>It was all clear after i overcame my laziness based on a suggestion in 
>another
>thread and looked into:
>http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-vcd-dvd.html
>
>The only problem i'm having now is that converted .mpg is about 16% larger 
>than
>original, even when i constrain it from 9300kbps to 7750 kbps w/ vbitrate. 
>I'm
>amazed that the only difference vbitrate drop of 16% made was about 15KB, 
>which
>is about 1/2000.

You have to consider:
1) The vbitrate
2) The abitrate (less significant, but audio takes up space too)
3) MPEG file size = size of video + size of audio + overhead (about 4%, but 
it varies)

You can Google for a bitrate calculator that will tell you the vbitrate that 
you should use to achieve a
particular filesize given the running time of the movie, the abitrate, etc.

Since you are trying to make a DVD, remember to either place your subtitles 
fairly high, or add black borders, to compensate for overscanning.