Monday, February 20, 2012

[Avid-L2] QT Prores plays black on QT7 7.6.2?

 

Mac OS 10.5.6 Avid SNDX 4.0.5 QT 7.6.2
I'm exporting a QT ref from Avid of a DNX 220 sequence to get four tracks of audio.  I figured I could bypass any gamma shifts when converting to Prores HQ by using Mpeg Streamclip but streamclip won't handle the 4 channels of audio from what I see.  I can use QT pro and set it to 4 discrete channels and that works.   Here's what's strange the files exported to prores and proresHQ playback with audio but black for video.  The inspector shows them correctly.  I can take these files and play them back fine on my MBP with QT 7.6.6.  I'm surprised I can export the prores file but not play it back on the same computer.  Also in Mpeg Streamclip I see to choices of ProRes but no ProresHQ.  Turns out the top ProRes is HQ and the 2nd line that says ProRes is regular ProRes.  In QT Pro 7 I see ProRes and ProResHQ.  Is this because the QT 7.6.2 and not 7.6.6 like I have on my MBP.  Just to repeat I find it strange I can export to prores and get a file
that works on my MBP but not on the computer that exported it.

John Moore

Barking Trout Productions

Studio City, CA

bigfish@pacbell.net

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