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View Full Version : Set up XVID to use quant=1 on Full quality first pass?


aLu
28th January 2007, 11:10
Is it possible? How? Or would I have to change the source code and recompile?

This post is not about the why, but the how.

jon.schaffer
28th January 2007, 11:46
Yes, create a zone and set a fixed Quantizer of 1.

Teegedeck
28th January 2007, 12:50
A little reminder: Unless you are aiming for 1 movie per DVD or something similiar this will very probably make 2nd pass less accurate. Choose a quantizer for 1st pass that is as close as possible to the average quantizer you're likely to get for the 2nd pass.

aLu
29th January 2007, 16:28
@jon.schaffer
I see why your are the Eternal Junior Member :D

I've experimented a little and there seems to be no way - Xvid doesn't care for any quantizer settings on "Full quality first pass", it's always 2 for i- and 4 for b-frames.
2 ist not "Full quality", it would be really nice if it was changeable ... or why not always write a PASS file?

Teegedeck
29th January 2007, 21:52
Did you define a _zone_ with constant quantizer=1?

Zep
30th January 2007, 00:28
@jon.schaffer
I see why your are the Eternal Junior Member :D

I've experimented a little and there seems to be no way - Xvid doesn't care for any quantizer settings on "Full quality first pass", it's always 2 for i- and 4 for b-frames.
2 ist not "Full quality", it would be really nice if it was changeable ... or why not always write a PASS file?

you did something wrong

it works fine

Zep
30th January 2007, 00:33
you do not even have to create/define a zone. Just use the default zone which is frame 0 to end then click the Quantizer check button and set the Q=1

works great for me doing that way. Been doing it that way for years :)