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Re: [VCDImager Bugs/Devel] vcdimager - suggestion (fwd)


From: Andrew Stevens
Subject: Re: [VCDImager Bugs/Devel] vcdimager - suggestion (fwd)
Date: Mon, 22 Jan 2001 10:59:54 +0000

> But: That leads to XVCD - but XVCD is supported only by
>      very few DVD-Players.
Is this something different from SVCD?

> Then I read: MPEG2 is downward compatible to MPEG1 and gave
> it a try:
> 
> I encoded an MPEG1-File to 480x575 resolution.

Amazing! I would have bet money that the player would have messed
up...

Aside:  MPEG-1 will compress o.k. if the original material was a
progressive
sequence.  E.g. a movie converted to PAL.   Compression on NTSC movies
or
video material (originally interlaced) will be poor as MPEG-1 doesn't
allow
for field-based DCT or motion compensation.

        Andrew



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