[M4IF Technotes] Query

[bharat nihalani]

Dear All,
I have a small doubt. In the MP4 ISO code, there is a function:
MP4GetMovieIndTrack( *moov, /*trackNumber*/, &trak );
Here, we have to specify the 'trackNumber' as the second argument. Now, suppose I have 3 tracks in an MP4 file(BIFS, OD and Audio) and I want infomation of the Audio track, then how do I know the track number of this track beforehand?
Thanx in advance.
Regards,
Bharat
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