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Re: [VCDImager] Newbie svcd quiestion

From: Matto Marjanovic
Subject: Re: [VCDImager] Newbie svcd quiestion
Date: Thu, 13 Dec 2001 15:44:05 -0500
User-agent: SEMI/1.14.3 (Ushinoya) FLIM/1.14.3 (Unebigory ōmae) APEL/10.3 Emacs/20.7 (i386-debian-linux-gnu) MULE/4.0 (HANANOEN)

 >The SVCD spec requires that the mpeg video be exactly 480x480 
 >resolution. No more, no less. Don't worry about the aspect ratio 
 >though--all pixels are not square and it will look just as it should. 
 >So, just scale in the width to 480 and you're good to go.

I was under the impression that it was "2/3 D1" --- i.e. scaled from 720
 to 480 in width (and height stays 480/576 as appropriate for NTSC/PAL).

  This would mean a pixel aspect ratio of 11:15 (as opposed to 11:10 for
  the original 720x480 frame).  A 640 wide source would need to be padded
  to ~654 wide before being scaled to 480.


(I wrote this all up at "";, based on the
 referenced references, but I am looking for more confirmation.)

-matt m.

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