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i could very well be wrong on this, but here is possibly the answer, VCD is
a CBR MPEG1 video stream. SVCD is a VBR MPEG2 video stream. and this is
the part i'm probably really wrong on but i think that teh MD-Discam is a
CBR MPEG2 video stream. if this is the case it explains it fully. I hope
i'm right and i hope that helps.
----- Original Message -----
From: "Howard Chu" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 06, 2001 5:53 AM
Subject: MD: idle rambling
>
> Hey there... I was just reading up on VCD and SVCD tonight (Video CD,
> SuperVCD)
> and wondering to myself, why does the Sony MD-Discam only fit 20 minutes
of
> A/V
> onto a 650MB MD? Of course, I realized that the Discam is using much less
> compression. But wouldn't it be cool to have an MD-based movie player that
> played SVCD format? (MPEG2 video compression, up to 95 minutes on 650MB,
> depending on audio quality...) The VCD web sites I visited talked about a
> typical setup using 224kbps for audio and the remainder for video, but
that
> using 128kbps audio and leaving more bandwidth for video was a better
idea.
> Makes sense to me. By that logic, even better would be 105kbps ATRAC3
> audio...
>
> I think the next MD-Walkman needs to be an MPEG2 realtime Video recorder.
> Just
> as tape progressed from audio to video, it seems the next logical step for
> MD.
> The Discam was an interesting proof of concept but they really need to
take
> it
> further now, and put an i.Link interface on it...
>
> -- Howard Chu
> Chief Architect, Symas Corp. Director, Highland Sun
> http://www.symas.com http://highlandsun.com/hyc
>
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