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Audio Synching Issues
Hi Cows,
We have a very odd problem with a complex workflow hopefully someone can help with.
The workflow is below and the trailer that is being cut contains element as listed in the workflow.
1st Step
Xilisoft DVD Ripper
Video – Pal
720 x 480 – 720 x 576
Framerate up to 25 fps
RIP DVD.
This takes the DVD footage upscales it to 25 fps.
2nd Step
Create FC sequence @ 25 fps DV
Lay file into sequence and export to DV res 25 fps of ripped content to .mov file
This step makes the .mov file
3rd Step
Open Cinema Tools and choose File Batch Conform
Locate .mov and open choose frame rate 24 fps hit conform.
This downscales the 25 fps back down to 24 fps
4th Step
Open FCP Drag .mov into timeline in 24 fps project
Export using native project export settings with no changes.
So this part of the workflow makes the .mov in 24 fps
Audio Stage
1st Step
Digitize machine get OMF’s from client source (CD or DVD)
Open Automatic Duck from FCP Import menu
Convert to DV Pal 48 khz 24 fps.
Automatic Duck places Audio into FCP
Manually line up video track in FCP
The video and audio is manually aligned so it is in synch.
The Quicktime files that the project is made of are all in synch. When previewed the audio appears in synch on dialogue but the sound effects line up perfectly. It is a bizarre problem.
The OMF’s contain the elements and the Automatic Duck places them into FCP. The dialogue is a different track but why would the effects be in synch and parts of the dialogue are fine, it may be elements of the dialogue are ADR but they appear in synch fine in Quicktime, but not FCP output to a Plasma display.
The Mac Pro is part of a Fabric with dual screens attached to the DVI card supplied by Apple. A Blackmagic card puts the output to the Plasma.
Could it be anything to do with the Blackmagic card output? It is driving us all insane.
Heeeeelp
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2 Replies
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How do you know the source footage on the DVD wasn’t 25fps?
Jerry
Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski.
8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX Cinema Displays
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Hi Jerry,
If it wasn’t then it was as it is scaled up to 25 fps. If you read through the steps I outlined you’ll see the work flow. It is then scaled down to 24 fps.
Thanks for your help, any ideas?
Nicholas
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