I am using MovieExportFromProceduresToDataRef to export some MP4 files.
Sometimes, when the getDataProc is called from the exporter, the data is not
ready. Instead of having the proc to wait, I think there should be a way to
return from the function with no data - simply telling the exporter "the
data is not ready, come back again".
I have looked everywhere and couldn't find any information about this. I
hope there is a way. Has anyone done something like this?
John
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