[ManicsMan]

Hi,

Does anybody have any information or know of any tools regarding extracting closed captions data from ancillary data track of an MXF file? The closed captions are reported as ancillary data and encoded in EIA 608 and EIA 708, according to MediaInfo but we do not know how to extract the data and decode the data.

Many thanks in advance.

[Matt Beard]

Hi - mxfsplit will extract the anc data tracks for you

[ManicsMan]

Thanks, I have used MXFSplit but I like to decode the data programmatically and without using MXFSplit.

[Matt Beard]

It's worth trying to follow what MXFSplit does.

Basically it makes a map of essence streams indexed by BodySID and Track Number, then walks through the file partition by partition using BodyReader (noting the BodySID for the current partition) then each essence stream in that partition gets its own handler that sends its values to a file (indexed by the above map). End result is one file per essence stream per BodySID. If you only want the caption data you only set up the handlers for the data streams.

[marcelo.paula]

Hi Matt! Thanks for helping us.
Can I wrap again essence streams or dump just the captions stream into a MXF file?