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Out of sync audio from Compressor
Hello,
We are trying to standards convert a 50min NTSC Apple ProRes 1080i file to PAL Apple ProRes 1080i through compressor. Every time we send it through, we receive a file with with audio gradually slipping out of sync. First 10-15 minutes seem fine but by minute 30, we are out of sync. Any help would be greatly appreciated. Thank you. -
3 Replies
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Hoe are you doing the standards conversion?
What I mean is, what settings are you using?
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Here are our settings:
Under the Encoder tab –
Video – Apple ProRes, 25FPSAudio – Linear PCM, Stereo, 48 KHZ Render settings-Normal, PCM Settings 24bit.
Streaming – none
Under The Frame Controls Tab –
Frame Controls-On
Resize Filter – Better
Output Fields – Top first
Deinterlace – Fast
Adaptive details – CheckRate Conversion – Fast
Set Duration – We have used both % of source and “So Source Frames Play at 25FPS”
Under the Filters Tab – None
Under the Geometry tab –
Frame Size – Grayed out 1920 x1080 – 100% of sourceThat is all of the settings we are using. Hopefully you can find something we are doing wrong. Thanks for your help.
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I’ve not used Compressor for standards conversion. I use Nattress for that. I suggest at the very least you set Compressor’s Rate Conversion quality setting to Best. When changing a clip’s scaling or timebase with Compressor, I always go with Best quality settings.
John
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