• Apple Final Cut Pro Legacy

  ProRez yet again

  Posted by Gary Morris mcbeath on October 4, 2007 at 3:15 pm

  Hi folks,

  Here’s an interesting happening. Earlier this year, I tried out capturing and editing 1080i in ProRez, didn’t work. Dropped frames etc. Then I tried capturing in uncompressed, using media manager to recompress to ProRez HQ. Better, but still dropped frames etc. unless on half frame, dynamic playback, unlimited RT etc.

  It seems I’m running out of space on the RAID again doing everything in uncompressed; I don’t wish to go to an offline workflow, and DVCProHD doesn’t satisfy my quality needs. (I know it’s great for broadcast, but a lot of my footage is high detail, high motion, and 100 Mb DCT type compression doesn’t hold up). ProRez seems to have little if any degradation.

  So now I’ve done two things to my G5 dual 2.7: first I upped the ram from 4.5Gb to 8GB, which made the program interfaces much snappier; then I changed the video card to an ATI Radeon X800-XT. Then I set up a test project to edit in ProRez HQ, and what do you know: Single stream playback is smooth; only when I add a color filter, cross-dissolve etc do I get the orange bar, which is pretty much the same as my system’s performance working with uncompressed.

  Is it possible that the faster video card is doing more of the video processing, freeing up more CPU for the ProRez requirements? Or am I dreaming.

  Any thoughts? Comments? Cat calls?

  Thanks,

  Gary
  SaltAire Cinema Productions

  Del Chapple replied 18 years, 6 months ago 3 Members · 3 Replies
• 3 Replies

• 

  David Roth weiss

  October 4, 2007 at 11:08 pm

  Gary,

  Something is wrong at your place, because I can edit up to four layers of Pro Res HQ in realtime. Plus, I can also edit two layers with cross dissolves and a 3-way color correction on everything without getting an orange bar, and I have just a measily dual 2.3ghz G5 with 6gb RAM and no Radeon X800-XT. I use a 4-drive 2gb SATA raid that’s half full.

  David

  David Roth Weiss
  Director/Editor
  David Weiss Productions, Inc.
  Los Angeles

  POST-PRODUCTION WITHOUT THE USUAL INSANITY™

  A forum host of Creative COW’s Business & Marketing, and Indie Film & Documentary forums.
• 

  Gary Morris mcbeath

  October 5, 2007 at 4:28 pm

  Hi David,

  I guess there must be. What are your RT settings? Sequence settings?

  Gary
• 

  Del Chapple

  November 2, 2007 at 4:58 pm

  You Need Intel Chip’s in your Mac, the old g5 aren’t fast enough. We did a test on a Quad G5 and the capture to ProRez ran the procs up to 95% (all of them). You could get the AJA io and have it do the “ProRez’in” for you..

  del

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