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How do I get a bitmap thumbnail from Quicktime movie (on Mac OS X)

Subject: How do I get a bitmap thumbnail from Quicktime movie (on Mac OS X)
From: Tristan Bonsall <email@hidden>
Date: Thu, 27 Oct 2005 13:54:41 +0100
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I am trying to create a thumbnail image from a Quicktime movie. The application uses the Qt library from Trolltech, so I eventually need to get the image data into a QImage object, which can be initialised with data for most standard image file formats.

The code to do this on Windows is already implemented using

PicHandle macHandle = GetMoviePict(holder.pInternals->movie, frameTime);
HANDLE hDIB = GetDIBFromPICT(macHandle);
// ... build a BMP file in memory
// ... initialise QImage

but I am trying to do the same thing for the Mac OS X port of the application and I cannot find how to convert the data returned from GetMoviePict into a bitmap format that can be used to initialise the QImage object.

Can anyone point me in the direction of the APIs or some sample code to acheive this?

Thanks,

Tristan.

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