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Captions timing from embedded file

New Here ,
Sep 11, 2020

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I played out a file from KIPRO Rack with captions and recorded to computer using AJA Control Room.

That file has embedded captions.  When I import the file into Premiere, captions start at beginning of file. But audio doesn't start for 5 minutes.  The file plays with caption in sync using VLC.

 

why does this happen and how do I fix?

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Editing, Error or problem, Import

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Captions timing from embedded file

New Here ,
Sep 11, 2020

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I played out a file from KIPRO Rack with captions and recorded to computer using AJA Control Room.

That file has embedded captions.  When I import the file into Premiere, captions start at beginning of file. But audio doesn't start for 5 minutes.  The file plays with caption in sync using VLC.

 

why does this happen and how do I fix?

TOPICS
Editing, Error or problem, Import

Views

47

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Translate

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Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
Sep 11, 2020 0
Adobe Community Professional ,
Sep 11, 2020

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Captions are complicated. PR must interpret the import, and creates a cache file upon an embed import. If it finds problems, it will default or skip particular captions.

 

I just tested in PR 2014.3.2, exported a simple 608 caption stream embedded in mxf op1a. It reimports with the caption timing correct.

 

What type of caption stream are you embedding?

 

Stan

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Sep 11, 2020 0
New Here ,
Sep 14, 2020

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708 captions.

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Sep 14, 2020 0
Adobe Community Professional ,
Sep 14, 2020

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Test works with 708 also.

 

These are simple test files, so not useful for subtle sync issues. But the caption starts at the nonzero point I had in the project.

 

First, create a simple test sequence similar to your import. Set the caption at the same point; doesn't matter whether in sync with the actual audio. Just not the timecode. Export as mxf op1a with embed, and reimport. That may tell us whether it is a mismatch of some type between the exporting system and PR's import.

 

Stan

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Sep 14, 2020 0