[XviD-devel] YV12 downsampling and interlacing

[xvid-devel@xvid.org]

The upsampling version of this is the main source of the MPEG-2 "chroma
bug" that people complain about in many otherwise quality hardware DVD
players. See:

http://www.hometheaterhifi.com/volume_8_2/dvd-benchmark-special-report-c
hroma-bug-4-2001.html

(though the link may be down at the moment)

If present in Xvid then it would probably show up encoding Toy Story or
Moulin Rouge in interlaced format, with bleeding jagged red's.

- Tom

| -----Original Message-----
| From: xvid-devel-admin@xvid.org [mailto:xvid-devel-admin@xvid.org]On
| Behalf Of daniel smith
| Sent: Friday, October 11, 2002 1:14 PM
| To: xvid-devel@xvid.org
| Subject: Re: [XviD-devel] YV12 downsampling and interlacing
|
|
| i just noticed this yesterday while talking to some mpeg2
| folks on irc, i can look at it too if you'd like.  not that
| the spec makes much sense to me on the subject..
|
| dan
|
| ----- Original Message -----
| From: "Marc FD" <marcfd@free.fr>
| Date: Thu, 10 Oct 2002 21:26:26 +0200
| To: <XviD-devel@xvid.org>
| Subject: [XviD-devel] YV12 downsampling and interlacing
|
|
| > Hi ^^
| >
| > Maybe i'm wrong, but it seems that the YV12 chroma
| > down/upsampling is only a progressive one.
| > (no interleaved chroma down/upsampling feature)
| >
| > Right ??
| >
| > if it's right, i'll do some tests on interlaced sources interleaved
| > down/upsampling.
| > maybe a way to have PSNR and size improvements with
| interlaced sources.
| > (very little improvements, because it's only a chroma issue)
| >
| > Regards,
| > MarcFD
|
| --
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