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Sagekilla
12th July 2010, 15:30
Hey all, been a while since I've last been here ;)

I'm currently trying to encode the results from a computation I was doing, and I was wondering what would best preserve the features in my clip (short of lossless), especially wrt aq/psy-rd.

My goal is to get it to a reasonably small size while not ruining the features present in my results. I've been testing settings and visually checking, but I'd like to know if anyone knows any good tips for sources like this.

Here's a link to a couple frames of what I'm encoding: http://www.mediafire.com/download.php?jniwmnz2wth

There's 1000 frames in all, I just picked a few to give a general idea of how it looks.


Edit: Here's my encode settings:
x264 --crf 8 --preset veryslow --qpmin 0 --keyint infinite --rc-lookahead 100 --zones 0,1,q=0 --output "video.264" "source.avs"

Blue_MiSfit
12th July 2010, 15:49
Interesting that you set a zone to force the first frame to be lossless... It's a novel idea, but I don't know if it's such a GOOD idea ;)

I'd suggest --tune animation for a source like that, not totally sure though.

Derek

Sagekilla
12th July 2010, 16:34
When I actually did that, I got half the file size as if I did --crf 1 and forgetting to set --qpmin 0, which essentially forced --qp 10.

I'll try animation tuning though, thanks.

MasterNobody
12th July 2010, 19:20
Interesting that you set a zone to force the first frame to be lossless... It's a novel idea, but I don't know if it's such a GOOD idea ;)
This is not lossless. QP=0 (don't confuse with --qp 0 x264's option) not equal to lossless .

Blue_MiSfit
12th July 2010, 23:34
Ahh. That makes a lot more sense, actually :)

Derek