• Panasonic Cameras

  audio sync problems when capturing to FCP at 23.98 from 1200a

  Posted by Gewan Brown on July 21, 2006 at 1:33 am

  We have Varicam H footage shot at 24p (with system frequency at 59.94), so 23.98 footage. We are playing off a 1200a deck into a decklink card (HD Pro Dual Link) to capture into FCP(5.0.1). If the easy setup is set to DVCPro HD 59.94, then everything is dandy, audio syncs up. But then I can’t get the Frame Rate Converter software (v 1.0) to work (error = can’t conform source media).

  When I try capturing at 23.98, video is fine, no redundant frames etc, but the audio is out of sync by 3 frames.

  Any suggestions? Is capturing off the 1200a at 23.98 supported? What gives with the FRC not working? What preferences if any should I try clearing?

  Where does the FRC app install to… FCP package contents show no sign as far as I can tell.

  Thanks in advanced!

  G1

  Gewan Brown replied 19 years, 10 months ago 4 Members · 5 Replies
• 5 Replies

• 

  Chris Bell

  July 21, 2006 at 4:40 am

  Watch this tutorial… there are some tricks to frame rate converting.

  https://forums.creativecow.net/cgi-bin/new_page_wrapper.cgi?forumid=120&page=https://www.creativecow.net/articles/ross_shane/dvpro_hd/index.html
• 

  Gewan Brown

  July 21, 2006 at 6:08 am

  Nice tutorial but not really relevant.

  My footage was shot at 24p on a Varicam and I want it 24p on the timeline. So you’d think that a straight captire would work, and the video does, but the audio is out of sync. The FRC is a seperate issue that I simply brought up to let readers know I’m at a loss with the option of capturing at 59.94 and removing flagged/duplicate frames. The 59.94 captures are in sync.

  So shouldn’t a straght 24p capture work with no audio problems? Or does everyone always go 60p?

  Could there be a setting issue on the 1200a for output????
  Last I checked it was set to 720p format, 59/60 frequency. If I put it in 23/24 frequency it acts weird (goes off the monitor).
• 

  Noah Kadner

  July 21, 2006 at 3:01 pm

  This refers to a different 24p camera but the process you need to comprehend is the same:

  https://www.larryjordan.biz/articles/lj_dvx_capture.html

  Noah
• 

  Gary Adcock

  July 21, 2006 at 7:31 pm

  [gewanbrown] “My footage was shot at 24p on a Varicam and I want it 24p on the timeline. So you’d think that a straight captire would work, and the video does, but the audio is out of sync.”

  The audio capture is 2 frames out of sync with Varicam F and earlier models and traditionaly 3 frames with HDCam.

  It takes a lot more processing for video than it does audio. hence the delay- The H model Varicam can compensate for the delay but do not use it if you are shooting multicamera for the obvious reasons.

  gary adcock
  Studio37
  HD & Film Consultation
  Post and Production Workflows
  Chicago, IL
• 

  Gewan Brown

  July 23, 2006 at 7:05 pm

  Wow! So it is actually know issue? Well that doesn’t make me feel any better but it makes my workarounds appropriate I guess. I’ve been capturing all audio critical footage in long streams, offsetting the audio and then reimporting and making sub-clips.

  Is there another workaround that has become the “standard”???

  Thanks!

  Gewan

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