Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Video Encoding > MPEG-4 ASP

Reply
 
Thread Tools Search this Thread Display Modes
Old 26th April 2002, 18:56   #1  |  Link
Erbse
Registered User
 
Join Date: Mar 2002
Posts: 20
[Prob] Xvid 150 MB under given Filesize

I setup the Codec (Koepi's XviD-17042002-1, 2pass,Doom9 Tutor Settings,Size calculate with Gknot, Luminace off) to 1210 MB, the result is a 1060 MB file. It wouldn't care me, but some Lo-Mo Scenes in "Interview with a Vampire"(a lot of dark scenes) are looking nasty, high bitrate scenes are fine.

To get a better result on Low Bitrate Scenes, i try higher values in Two Pass - Tab, change "I-Frame boost" and "Curve Compression -> Low Bitrate Scene" but it didn't help, actually the Filesize was a little bit smaller .

So what can i else do ?
__________________
Help ! :stupid:
Erbse is offline   Reply With Quote
Old 26th April 2002, 21:28   #2  |  Link
Asmodian
Registered User
 
Join Date: Feb 2002
Location: San Jose, California
Posts: 2,601
I think this is just the problem all codecs have with dark scenes, have you tried just doing the first pass (constant quant of 2 - with discard first pass off) and seeing how big and how good the file is? If the first pass is undersized then the only (reasonable) ways to get the file bigger is to use less (no) smoothing, a larger resolution, or a sharper resize. All of these will not significantly affect the quality in dark area, that problem is heavily disused in this forum.
Asmodian is offline   Reply With Quote
Old 26th April 2002, 21:47   #3  |  Link
Erbse
Registered User
 
Join Date: Mar 2002
Posts: 20
What about setup the Alt. Curve to a higher rate ? for example "minimum
relative quality" about 85% ?

I don't understand Alt. Curve System very good, so i ask you .
__________________
Help ! :stupid:
Erbse is offline   Reply With Quote
Old 26th April 2002, 23:14   #4  |  Link
khp
Registered User
 
Join Date: Nov 2001
Location: Denmark
Posts: 142
Quote:
Originally posted by Erbse
What about setup the Alt. Curve to a higher rate ? for example "minimum
relative quality" about 85% ?
I don't think changeing the Alt. Curve, will change anything, if the video is saturated with frames at min quantizer. The curve is flat so you can't stretch/compress it.

In addition to what Asmodian said, I guess you could also use min. quantizer = 1

Last edited by khp; 27th April 2002 at 19:05.
khp is offline   Reply With Quote
Old 27th April 2002, 01:07   #5  |  Link
Koepi
Moderator
 
Koepi's Avatar
 
Join Date: Oct 2001
Location: Germany
Posts: 4,455
turn off luma masking.
Koepi is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

Forum Jump


All times are GMT +1. The time now is 06:43.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2017, vBulletin Solutions Inc.