Avid Pro Audio Community

Avid Pro Audio Community

How to Join & Post  •  Community Terms of Use  •  Help Us Help You

Knowledge Base Search  •  Community Search  •  Learn & Support


Avid Home Page

Go Back   Avid Pro Audio Community > Pro Tools Post Production > Post - Surround - Video

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 06-02-2011, 11:26 AM
Brandonx1 Brandonx1 is offline
Member
 
Join Date: Oct 2003
Location: Los Angeles
Posts: 2,935
Default Best setting for native HD dubber/video playback

Hi All,
I recently started using a HD Native rig for stem recording and video playback. Does anyone know the best settings for HD quicktime playback and stem recording? I just had a session with an HD quicktime in it and the dubber rig choked with 2 processors/ 85% and 64 sample buffer. I raised the processer to 4 /95% (still 64 sample buffer), which fixed that problem and made the rig run much smoother. I didn't know those settings in the playback engine effected quicktime playback as well. Any thoughts?

This is on a quad 2.6 mac pro running 10.6.2 and PT HD Native 9.0.3
Best
Reply With Quote
  #2  
Old 06-03-2011, 05:07 AM
Brent_Sydney Brent_Sydney is offline
Member
 
Join Date: Oct 2006
Location: Sydney, Australia
Posts: 442
Default Re: Best setting for native HD dubber/video playback

Your QT movie is driven by the operating system, outside of the PT environment in a way - so if you assign all CPU power to PT you starve the OS of grunt and get poor QT performance. If its a satellite rig for dubbing, you shouldnt need to run many plugins right? So axe your CPU usage. If youve got 16 cores available, only assign 8 to PT, leaving the rest to QT.
I think I remember reading something about the decklink cards liking a PB buffer size of 1024 as well.
The PTHDNative card compensates for IO latency (tickbox in the hardware settings I think) so you can play with these settings without fear of audio sync issues AFAIK.
I can test this more next week - just got a native dubber on my vid satellite on demo a few days ago.
Reply With Quote
  #3  
Old 06-03-2011, 06:51 AM
Brandonx1 Brandonx1 is offline
Member
 
Join Date: Oct 2003
Location: Los Angeles
Posts: 2,935
Default Re: Best setting for native HD dubber/video playback

Hi Brent,
This is what I thought as well, but I seem to be having better Performance with hd quicktimes with all cores selected in the PT playback engin and 95% usage. Odd to me to. Also I took a look at the activity monitor and the only process taking up any CPU PT. The QuickTime process is 0%. another odd one.

Lastly, if you turn on LLM with an hd native card, you only get one monitor mix, I think. I need all the outputs to be really low latency which is why I'm using 64 smaller buffer. Is this all correct?
Thanks
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Please explain dubber functionality jimlongo Post - Surround - Video 38 04-11-2008 09:22 AM
Recorder/Dubber Features in 7.2 networker Post - Surround - Video 0 12-24-2006 08:15 AM
PT Dubber Arrisound Post - Surround - Video 33 09-15-2005 12:04 AM
AMS-Neve CineFile dubber with PRO TOOLS? ProToolsguy56 Post - Surround - Video 1 09-08-2005 09:54 AM
Is this the new dubber or are dubbers dead? Frank Kruse Post - Surround - Video 3 06-14-2005 10:28 AM


All times are GMT -7. The time now is 05:57 PM.


Powered by: vBulletin, Copyright ©2000 - 2008, Jelsoft Enterprises Limited. Forum Hosted By: URLJet.com