Re: reading 10 bit uncompressed 4:2:2 QuickTimes?

• Subject: Re: reading 10 bit uncompressed 4:2:2 QuickTimes?
• From: Andreas Wittenstein <email@hidden>
• Date: Wed, 17 Aug 2005 18:03:53 -0700
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Paul,

I suppose you need to loop through the movie's video tracks' sample descriptions, look at the data format, and decide whether any of them warrant using 16-bit precision for RGB, for example by looking up a suitable image decompressor component for the format, and asking the codec what precision to use for the track, which the codec returns in the 'preferredOffscreenPixelSize' field of the 'CodecDecompressParams' argument to the 'Preflight()' selector.

Andreas Wittenstein
BitJazz Inc.
http://www.bitjazz.com/sheervideo/

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