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Re: extracting text from a movie text track

On Aug 28, 2006, at 2:50 PM, Quach, Hau wrote:

Can someone please tell me if it is possible to extract text from a movie’s text track using QT _javascript_?  I have an encoder application which basically put some kind of timestamps in a movie text track.  I was hopping that by doing this, I can read the timestamps out of a streaming movie and take some appropriate actions depends on the current timestamp.  I really appreciate any help that anyone can provide


This is entirely speculative, but it seems like you should be able to:
1. open a movie
2. find the text track (a track whose media is of type TextMedia)
3. use Media.getNextInterestingTime() to find the start time of the next text sample
4. call getSample() at that time, get the bytes out of the returned QTHandle, and create a string from them
5. repeat steps 3 and 4 until there are no more interesting times

I'm too busy to experiment with this, but that seems like what you'd want to try...

--Chris


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