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 07-20-2021, 07:30 AM
Reckless Erik Reckless Erik is offline
Member
 
Join Date: May 2001
Location: Reykjavik,Iceland
Posts: 818
Default Video sync drifts

Do people here experience video sync drift even though their system is genlocked?
I am currently using a BM UltraStudio Express video card feeding HDMI signal to a laser projector and after a hour or so of editing the sync is noticeably off. Restarting PT or the projector, or disconnect/reconnect the HDMI seems to return things to normal.
I am starting to wonder if the HDMI is the problem as I have tested 3 projectors of the same make and the problem persists.
__________________
[email protected]
Newcomer Audio Post
MacBookPro 2.3GHz i7 16GB RAM OSX 10.15.7, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
Mac M1 Studio Ultra 64GB RAM OSX 13.6, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
Reply With Quote
  #2  
Old 07-20-2021, 07:46 AM
Farhoof's Avatar
Farhoof Farhoof is offline
Member
 
Join Date: Jun 2014
Location: EU
Posts: 485
Default Re: Video sync drifts

What Decklink driver are you running?
Drivers 11.5 and 11.6 are known to drift.

See this table for qualified driver versions:
https://avid.secure.force.com/pkb/ar...eo-Peripherals
Reply With Quote
  #3  
Old 07-20-2021, 09:13 AM
Reckless Erik Reckless Erik is offline
Member
 
Join Date: May 2001
Location: Reykjavik,Iceland
Posts: 818
Default Re: Video sync drifts

Running desktop video 12.1
__________________
[email protected]
Newcomer Audio Post
MacBookPro 2.3GHz i7 16GB RAM OSX 10.15.7, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
Mac M1 Studio Ultra 64GB RAM OSX 13.6, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
Reply With Quote
  #4  
Old 07-21-2021, 02:43 AM
Farhoof's Avatar
Farhoof Farhoof is offline
Member
 
Join Date: Jun 2014
Location: EU
Posts: 485
Default Re: Video sync drifts

Try Desktop Video 11.4.1
Reply With Quote
  #5  
Old 07-21-2021, 04:56 AM
Reckless Erik Reckless Erik is offline
Member
 
Join Date: May 2001
Location: Reykjavik,Iceland
Posts: 818
Default Re: Video sync drifts

Thanks will do
__________________
[email protected]
Newcomer Audio Post
MacBookPro 2.3GHz i7 16GB RAM OSX 10.15.7, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
Mac M1 Studio Ultra 64GB RAM OSX 13.6, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
Reply With Quote
  #6  
Old 07-22-2021, 04:32 AM
Reckless Erik Reckless Erik is offline
Member
 
Join Date: May 2001
Location: Reykjavik,Iceland
Posts: 818
Default Re: Video sync drifts

With 11.4.1 the video engine took an age to launch and then failed! I guess this BM driver version is too old. Reverting back up to 12.1.
__________________
[email protected]
Newcomer Audio Post
MacBookPro 2.3GHz i7 16GB RAM OSX 10.15.7, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
Mac M1 Studio Ultra 64GB RAM OSX 13.6, PT Ultimate 2024.3.1 HDn, MTRX Studio, 2x Avid S1, PT Dock...
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
Video Offset " drifts " / shifts over time Schottlandru Post - Surround - Video 21 08-10-2015 05:51 AM
Keeping Laybacks in Sync (delay compensation and Video sync offset) edit machine Pro Tools TDM Systems (Mac) 6 11-15-2010 11:33 AM
Reason drifts with HW buffer changes? sgladm 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 3 09-09-2005 08:25 AM
sync drifts. need help ASAP whosmatt Pro Tools TDM Systems (Mac) 6 08-05-2005 06:03 PM
Video Sync & consumer video decks binaural General Discussion 2 07-19-2000 08:20 AM


All times are GMT -7. The time now is 12:13 PM.


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