Re: CVTimeStamp -> TimeValue?

Subject: Re: CVTimeStamp -> TimeValue?
From: "Edward Agabeg" <email@hidden>
Date: Sun, 22 Oct 2006 19:12:14 -0400
Delivered-to: email@hidden
Delivered-to: email@hidden

I use CoreVideo's Display Link to render a QuickTime movie and I need
to know to which TimeValue (in the Movie's TimeScale) the returned
frame of QTVisualContextCopyImageForTime corresponds.
Is there any way to convert a CVTimeStamp to a Movie Time? Or any
other approach to get the TimeValue of the returned frame?

Have you tried geting the Movie Time from the returned CVImageBufferRef?

See CVBuffer.h

kCVBufferMovieTimeKey - The movie time associated with the buffer. Generally only available for frames emitted by QuickTime (type CFDictionary containing the kCVBufferTimeValueKey and kCVBufferTimeScaleKey keys).

HTH.

regards,
edward

Edward Agabeg
WWDR Engineer
QuickTime
Worldwide Developer Relations
Apple

http://www.apple.com/developer
http://www.apple.com/quicktime

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