What is an MXF File?
The material package has one or more tracks, each of which has a Track/D, an EditRate, and an Origin property. The Track has a sequence of one or more Source Clips, each of which has a StflrtPosition, a Duration, and the PackagelD and TrackID of the file package track where the actual essence can be found. Using the SourceClips on the material package, we can convert any position on a material package track into a position on a file package track. Then we can use index tables to convert these time-oriented positions into byte offsets within the stored picture and stored sound essence to play back synchronized material.