HD Playback on Catalyst

[samsc]

I ran some HD content on a reletively new Catalyst server with v4 b119, 15,000RPM SCSI drive, X1600 Radeon card on newer MAC Pro and I was very disappointed with its performace. One layer would play back at 25fps somewhat smooth with occasional glitches but add a second and the performance plummetted.
Thanks
Scott Riley

I ran some test with a HD jumpback file at random playing back from a MTRON SSD - Quad intel 2.66GHz

I rendered out photjpeg files at different compression rates.
then tried to playback 2 layers-

The Raw File played at 11fps

photojpeg 40% 55-60fps
photojpeg 50% 55-60fps
photojpeg 60% 55-60
photojpeg 70% 55-60fps
photojpeg 80% 35-40fps

The reason why you need to test different compression rates in photojpeg is that movies vary hugely in their compression value depending on the content.
And the overall data rate of the movie is more important than the compression value.
You want to make hidef work you have to do some tests.

No other codec comes close to photojpeg.