Digital Video Forums  

Go Back   Digital Video Forums > Video File Formats > AVI, DivX/Xvid

Reply
 
LinkBack Thread Tools Search this Thread Rate Thread Display Modes
Old 25 Mar 2003, 10:20 PM   #1
H4x0r of Gibsons
 
t3ch's Avatar
 
Join Date: Mar 2003
Location: Winchestertonfieldville
Posts: 113
Default Alternative Curve Compression

I did some tests with different high/low settings to see what kind of a difference each one made, however I didn't see any differences. Not to say there aren't subtle differences I can just not be noticing...

Any thoughts?

Also, I was looking at the alt_curve_c.gif that xvid includes... From that graph, I should think that anytime a file is reduced use High and use low if enlarged... am I assuming correctly?
Attached Thumbnails
Alternative Curve Compression-alt_curve.jpg  
__________________
OGSTH! my webpage
----------------------------
Knowledge is power. Power corrupts. Study hard, be evil.

Last edited by t3ch; 25 Mar 2003 at 10:22 PM
t3ch is offline   Reply With Quote
Old 25 Mar 2003, 11:04 PM   #2
H4x0r of Gibsons
 
t3ch's Avatar
 
Join Date: Mar 2003
Location: Winchestertonfieldville
Posts: 113
Default

Quote:
Curve aggression defines how quickly the codec adapts bitrate to frames. A high aggression will help the codec aid low bitrate frames while hurting high bitrate frames and is better for very dynamic scenes (i.e. a slow motion scene, then up to a lot of motion very quickly). Low aggression adapts slower and won't improve low bitrate frames as much, but will not harm high bitrate frames much either. Medium aggression is a compromise of the two.
as haxed from doom9. Ok, so I was on the right track.

Has anyone done any tests or noticed just how much slower or faster the bitrate adapts? Like I said, what I was testing wasn't much help =/
t3ch is offline   Reply With Quote
Old 26 Mar 2003, 09:07 PM   #3
Old member
 
Join Date: Feb 2002
Posts: 5,417
Default

I did not see much difference either.

On a side-note, Koepi himself advises against using it, and I have since followed suit.
Enchanter is offline   Reply With Quote
Old 28 Mar 2003, 12:52 PM   #4
H4x0r of Gibsons
 
t3ch's Avatar
 
Join Date: Mar 2003
Location: Winchestertonfieldville
Posts: 113
Default

Well at least that's one less setting I have to tinker with

Always of some help, danke =]
t3ch is offline   Reply With Quote
Old 28 Mar 2003, 07:50 PM   #5
Old member
 
Join Date: Feb 2002
Posts: 5,417
Default

You're welcome.
Enchanter is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off




All times are GMT +10. The time now is 04:20 PM.

Kirsch designed by Andrew & Austin


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright © 1999 - 2018 Digital Digest

Visit DivXLand   Visit dvdloc8.com