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Re: [MPlayer-users] [bug?] Libavcodec mpeg4 sync

To: "MPlayer user's list." <mplayer-users@xxxxxxxxxxxx>
Subject: Re: [MPlayer-users] [bug?] Libavcodec mpeg4 sync
From: D Richard Felker III <dalias@xxxxxxxxxx>
Date: Sat, 29 Mar 2003 22:47:46 -0500
In-reply-to: <200303291820.07930.cjb@cs.utexas.edu>
References: <1048832474.8081.5.camel@Natalie.maestro><20030328163026.GT247@brightrain.aerifal.cx><200303291820.07930.cjb@cs.utexas.edu>
User-agent: Mutt/1.3.25i 
[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
On Sat, Mar 29, 2003 at 06:20:07PM -0600, christopher j bottaro wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> don't you have to do the "pass 0" inorder to calculate the bitrate needed for 
> a 700 mb cd?

No, you get out a calculator and divide the number of bits on a cd
(5898240000) by the length of the movie in seconds. That will give you
the total bitrate you can use for audio+video. Then subtract off
whatever you'll be using for audio (technically this is variable, but
you can use abr to specify the average bitrate you want, or just
estimate about 128 kbit/sec with q=6 or 7) and whatever you have left
is the video bitrate you should use.

Rich

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