[MPlayer-users] Ripping dvd with DTS audio

Michael Iatrou m.iatrou at freemail.gr
Thu Mar 24 01:22:45 CET 2005

When the date was Thursday 24 March 2005 02:05, Vladimir Mosgalin wrote:

>  On 2005.03.24 at 00:59:33 +0200, Michael Iatrou wrote next:
> > They don't make 640k AC-3 for the same reason most people don't even
> > think to create 512kbps mp3s: AC-3 and mp3 are lossy codecs/algorithms,
> > designed for a very specific range of bitrates. So, an 640k AC-3 is just
> > Bad Idea(TM).
> You are right, but don't forget that by "512kbps mp3" you probably mean
> stereo file, while ac3 has 5 separate channels + small lfe channel...
> That makes real difference.

No, two stereo channels are _very_ different from six soundtrack channels. in 
the second case, there are a lot of things you can do to manage the bitrate 
for optimal quality.

> 640k ac3 is used for dolby cinemas. Maybe its quality won't be ideal,
> but at least it would be closer to 768k dts than 384k ac3 one...

Don't forget that DTS goes up to 1536k (AFAIK) and that makes all the 

 Michael Iatrou
 Electrical and Computer Engineering Dept.
 University of Patras, Greece

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