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Joined: Mon Jun 23, 2014 5:01 am
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Post Posted: Mon Jun 23, 2014 8:04 am 
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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.

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Joined: Thu Apr 15, 2004 10:39 am
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Location: Scotland

Post Posted: Thu Jul 31, 2014 8:10 am 
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Hi - mxfsplit will extract the anc data tracks for you

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Post Posted: Mon Dec 08, 2014 9:11 am 
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Thanks, I have used MXFSplit but I like to decode the data programmatically and without using MXFSplit.

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Joined: Thu Apr 15, 2004 10:39 am
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Post Posted: Sat Jan 17, 2015 8:29 am 
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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.

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Joined: Thu May 05, 2016 5:12 pm
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Post Posted: Wed May 11, 2016 9:11 pm 
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Hi Matt! Thanks for helping us.
Can I wrap again essence streams or dump just the captions stream into a MXF file?

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