Real-time Playback Issue – ProRes 444 1080i 59.94

[Chris Hall]

Ok now thoroughly confused…. may not know what I’m talking about at all.

I just restriped my RAID5 array and got my speeds back to 500mbps (although I’m still confused as to whether this is 500mbps or 500Mb/s based on Blackmagic’s disk utility… but I digress), and low and behold I still have my Prores444 playback issue in Resolve. Can’t hit more than 26fps for 1080i 59.94 ProRes444 files. Furthermore, I tried some ProRes422 HQ 59.94 1080i files and I got the same problem, playback speeds of only 26-27.5fps. I took Dwaine’s advice and turned off all scopes, which basically got me from 24ish to 26fps. The proxy playback gets me intermittently to 30fps but still not consistenly. I then tried some 23.98 1080p ProRes 422HQ and 444 footage and Resolve was able to maintain playback at 24fps in all of its green bar goodness just fine. It just can’t make 30fps for 1080i 59.94 footage no matter what codec I use.

This seems odd to me as I’m running the same configuration as Dwaine (Mac Pro 2009, 2×2.26 Quad-Cores, 24GB of RAM 1066mhz, GTX285, GT120), and not able to get realtime playback.

Ugg… I’m stumped.

Chris Hall
Colorist – Basher Films
Pasadena, CA