H264 decoding using ICMDecompressionSessionDecodeFrame

Subject: H264 decoding using ICMDecompressionSessionDecodeFrame

From: François Dagenais <email@hidden>

Date: Wed, 7 Jun 2006 10:14:17 -0400

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Hi!

I am currently developing an application that uses the Quicktime SDK to decompress video data from a movie file to buffers in YUVS (kYUVSPixelFormat) format. I am using the ICMDecompressionSession set of functions to do the work and I use GetMediaSample2 to get the data from the file. Usually it works fine, but when I encounter a file encoded with the H264 codec, I am able to decode it but all I get is shades of green and purple. Plus the movie doesn’t play smooth (maybe it’s a problem with the order of the frames). I checked the result and the flags in the callback proc and everything looked fine. It seems like the data isn’t outputted in the correct format (maybe it’s still outputted in RGB???). Did anyone have the same problem while decompressing H264 encoded videos?

François Dagenais

email@hidden

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