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QTKit quick question

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QTKit quick question

Subject: QTKit quick question
From: John Stiles <email@hidden>
Date: Wed, 10 Jan 2007 16:31:11 -0800

We want to add images to an existing QTKit movie using addImage:forDuration:withAttributes:.

Our images are stored in memory and have already been compressed using Planar Component Y'CbCr 8-bit 4:2:0 (kYUV420PixelFormat). Is there any way to pass this data in directly? I couldn't see a way to make an NSImage with this format (or any YUV-ish format). I can easily make a GWorld with QTNewGWorldFromPtr, but if it's in a GWorld, then how do I send the data to QTKit? Can an NSImage wrap a GWorld?

Of course, it's not hard to convert back to RGB, but we'd like to avoid the conversion for performance reasons. _______________________________________________

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