[theora] Blockiness

[Dan Miller]

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.
> --- >8 ----
> List archives:  http://www.xiph.org/archives/
> Ogg project homepage: http://www.xiph.org/ogg/
> To unsubscribe from this list, send a message to 
> 'theora-request at xiph.org'
> containing only the word 'unsubscribe' in the body.  No 
> subject is needed.
> Unsubscribe messages sent to the list will be ignored/filtered.
> 
--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'theora-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.