Thanks for your response. It
seems more straight forward to write my custom data handler. Can you show me
what needs to be done to get QuickTime to use my data handler? Currently I
am using CreateMovieStorage() and it returns the default data
handler.
Steve
On 23-feb-06, at 21:05, Steve Li wrote:
> I am trying
to use QuickTime for Windows SDK to write uncompressed
> video to a
QuickTime movie. I have the video compressor set to "None".
> The video
frame size is 720x480. By looking at the performance
> counter, I notice
QuickTime is writing 64k bytes of data in each I/O
> operation. And the
number of writes/sec is over 300. I am wondering is
> there a way to
optimize the performance? Maybe a custom data handler?
> But I am not sure
where to start.
In your DataHWrite64 function you could try to combine
several write
request into one write.
You would still have to get
QuickTime to use your data handler instead
of the standard one.
A simpler
way is to write the movie samples to the disk yourself and
construct the
movie from the data file using AddMediaSampleReferences.
If you want a single
file it gets a little harder.
Jan
E.
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