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CS6 UnCompressed Quicktime w/ Alpha Channel
Is there a way to render out an uncompressed/ high quality Quick Time YUV 8 Bit 4;2:2 file with a working Alpha Channel from Premiere Pro CS6? Thank you.
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9 Replies
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No. By definition uncompressed codec QuickTime formats don’t carry alpha channels. Animation or ProRes4444 codecs can carry alphas (millions+ setting). I’m not sure if Premiere Pro lets you export with an alpha (I don’t think so), but you can do it from After Effects. A second option would be to generate separate matte and fill exports as two different files. Those could be two uncompressed QuickTimes, but would need to be synced/composited later when you use them again.
– Oliver
Oliver Peters Post Production Services, LLC
Orlando, FL
http://www.oliverpeters.com -
[Oliver Peters] “I’m not sure if Premiere Pro lets you export with an alpha”
It’ll work. You’ll need to pick a supported codec and set it to maximum bit depth in export.
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I think it also has to be on Video track 2 or higher with nothing on Video track 1.
Alex Udell
Editing, Motion Graphics, and Visual FX -
Quicktime set to Animation and 32 bits will give you a file with an alpha channel.
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Adobe Certified Expert Premiere Pro CC
Adobe Community Professional -
[Alex Udell] “I think it also has to be on Video track 2 or higher with nothing on Video track 1.”
It ain’t necessarily so. 🙂
You can produce files with an alpha channel irrespective of the track hierarchy using QT Animation + as Ann pointed out or uncompressed AVI files 32 bits (on Windows). -
[jayson palmer] “Is there a way to render out an uncompressed/ high quality Quick Time YUV 8 Bit 4;2:2 file with a working Alpha Channel from Premiere Pro CS6?”
Note that the uncompressed QuickTime codecs with Alpha channel support are RGB color, not YUV (YCC). ProRes 4:4:4:4 might be a good alternative.
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DNxHD in Quicktime if the Avid codecs are installed would give the Alpha option as well. Lagarith is another but that is AVI if the req is Quicktime.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
DNxHD/MOV is prone to luma clipping and shifts. I no longer recommend using it. DNxHD/MXF in Creative Cloud is OK, though.
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That would be the Quicktime player version used to decode. Otherwise the MXF would have the same problem. I would test it with the updated player version for that platform before eliminating.
Eric-ADK
Tech Manager
support@adkvideoediting.com
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