Questions about various new features of DVD-RB and its affiliated programs

[TBL]

Hello!

I've been away for a while from RB and this forum, meanwhile all hell has broken loose :)

I have few unclear things:

Apparently there's some CPU=3/4 options, LUMGAIN feature in new HC and colorimetry information settings. I'd like to put them to good use. I read that there is some compressibility gained from these options (setting CPU, LUMGAIN and colorimetry with narrowed or whole colorspace).

The question is where to put them all, possibly creating different templates for different sources? I tried searching, but there's simply too much info :) I'm not usually the first one to give up, but unfortunately time is at the moment a very limited resource for me.

It would be very much appreciated if someone could narrow it down a little bit for me (and other interested people too).

[techreactor]

I dont think this has been included yet in DVD-RB and I also think the Lumgain feature will make achieving/predicting the target size even more difficult.

[Boulder]

LUMGAIN shouldn't affect the file size precision. When I tested it, the filesizes were the same with LUMGAIN=0 and 4.

Using CPU=4 as an MPEG2Source option is rather safe IMO. The nice thing about it is that it knows what quantizer was used in the source and adapts the deblocking accordingly.

For ColorMatrix, simply use the filter editor. I've got these lines:

c:i:ColorMatrix(mode="rec.601->rec.709",interlaced=true)
c:p:ColorMatrix(mode="rec.601->rec.709") (that tongue-out smiley is c: p:, remove the space between : and p)

Using ColorMatrix is recommended as it helps keeping the colors the same as in the source.

The first two options are applied by editing the rebuilder.ini accordingly. All of those three options are probably saved when you save a template.

[chainring]

Boulder,

Could you explain a bit more about the HC options going in rebuilder.ini? Specifically, are you saying the new "LUMAGAIN" option is supported? And how does one use the "CPU=4"?

Thanks!