Re: [Openexr-devel] DWA compression

[Brendan Bolles]

On Aug 9, 2014, at 8:57 AM, Karl Rasche wrote:

> I'd try starting at 85, and play around to see what an acceptable level might 
> be for the situation at hand. If the frame isn't going to undergo heavy 
> magnification, you might be able to push it higher. >200 might be find for 
> vacation photos, but isn't going to be terribly useful in a production 
> setting.


OK, this DWA compression seems pretty awesome, Karl.  Kudos!  I wrote up a blog 
post complete with demo movie here:

http://fnordware.blogspot.com/2014/08/dwa-compression-in-openexr-22.html


How do you guys use it in your pipeline at DreamWorks?


One thing I noticed is that it doesn't seem to apply lossy compression to 
anything other than RGB channels, is that right?  Also, what happens if you 
send it 32-bit float instead of our standard 16-bit?


Brendan