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mj2_video_source * access_video_track( kdu_uint32 track_idx)
Java: Mj2_video_source Access_video_track( long track_idx)
[Declared in "../apps/compressed_io/mj2.h"]
Returns a pointer to an internal video track resource, from which compressed data and rendering attributes can be recovered. The function returns NULL if the supplied track index refers to a non-existent track, or one which does not contain video information.