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List:       mjpeg-users
Subject:    Re: [Mjpeg-users] Mplex and lpcm problems
From:       "Steven M. Schultz" <sms () 2BSD ! COM>
Date:       2005-08-06 5:20:46
Message-ID: Pine.BSI.4.05L.10508052214550.29467-100000 () moe ! 2bsd ! com
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On Fri, 5 Aug 2005, Skip Intro wrote:

> What's the story on AC-3? Have you ever ran AC-3 audio-only DVD disk
> through a compatibility lab to see what the "coverage" is?

	The last time (a while back I admit) I tried to use ffmpeg's AC3
	audio and it didn't play the fellow (not a compatibility lab) mentioned
	something about "the rematrixing tables were missing or incorrect".

	AC3 is required for North America but I have yet to encounter a player
	that will not accept MPEG-1 Layer2 audio. PCM is mandated for everyone
	as I understand it - but giving up 1.5Mb/s for audio is usually out
	of the question due to space/bitrate constraints.

	For DVDs I produce I don't need a "lab" since I'm using a Dolby
	certified AC3 encoder which entitles me to, if I desire, place
	the Dolby logo on my DVDs (packaging as well as the trailers/credits) :)

	Cheers,
	Steven Schultz



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