[MPlayer-users] RFC: docs update for "how to create a high quality DVD rip"

[Jason Tackaberry]

On Mon, 2004-06-07 at 21:45 +0200, Hans du Plooy wrote:
> On Monday 07 June 2004 15:21, Jason Tackaberry wrote:
> > Why do a 3-pass encode if you're using CBR audio?  If you know the audio
> > bitrate before you begin encoding the video, it's easy to calculate the
> > video bitrate you need.
> 
> Please tell me how

Your movie is 90 minutes long (T minutes).  You plan to use 96kbit Ogg
(Ba kbit).  You want to fit the AVI on a 700MB CD (S MB).  You want to
find video bitrate Bv such that this is possible.

Bv = ((S * 1024 * 8) - (Ba * T * 60)) / (T * 60)
   = ((700 * 1024 * 8) - (96 * 90 * 60)) / (90 * 60)
   = 965.925 (Kbit)

Of course there will be overhead that you'll need to adjust for, but you
get the picture.

Do I get a scratch-and-sniff gold star now? :)

Cheers,
Jason.