dan at on2.com
Sat Mar 29 07:13:22 PST 2003
I'm not sure about the status of the post-processor in Theora. It's possible that it's been disabled for performance reasons.
___ Dan Miller
(++,) Founder, CTO, On2 Technologies
> -----Original Message-----
> From: rcooley at spamcop.net [mailto:rcooley at spamcop.net]
> Sent: Thursday, March 27, 2003 11:03 PM
> To: theora at xiph.org
> Subject: [theora] Blockiness
> I tried out Theora to see what the future holds, and see some
> pros and cons.
> As a great plus, I have noticed that, even at the lowest
> quality (ie. "-v 0"),
> the detail, and overally quality is clearly better than
> anything else available.
> On the negative side, at qualities comparable to MPEG4, I've
> notcied a great
> deal of blockiness. It's not as bad as blockiness from other
> codecs, as the
> macroblocks are much smaller, and the detail of the picture
> (ie. within the
> macroblocks) is still quite good, but it's a very bad thing,
> and detrimental to
> the video just the same. I am a bit concerned because I did
> not experience the
> same issue with the handful of standard VP3 videos I've tried.
> Although I'm quite excited about Theora, I seriously hope
> that the problems with
> blockiness are either limited to the current alpha version,
> or that the possible
> problem with be resolved before the beta release. Blockiness
> is certainly the
> bane of digital video, and I'm excited about Theora primarily
> because VP3 did
> not show blockiness at even very low bitrates.
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