Premiere Pro 2021 Captions out of sync/sped-up when exporting to MXF file

Community Beginner ,
Mar 28, 2021 Mar 28, 2021

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Like the new captions update.   Workstream is very functional.

Problem:  On a 29.97 DF timeline, Captions are .scc at  29.97 DF and import them into the timeline.  Everything syncs up fine.   Playback is perfect.   Then export as a 59.94 MXF OP1 file for broadcast with embedded captions.   On the rendered file, the captions go by about twice as fast, or faster.   As an example.  Program starts at 01:00:00;00   First caption at 01:00:05:00 - 01:00:15:00.   

After rendering the first caption starts many seconds before it should, and lasts only about 5 seconds.  Something is happening during the rendering process.  And can't figure it out.   

Net-Net.   I have to revert to the previous version of PP 2019, and import everything into a new project, and render it out with captions.   When I do that, it's perfect.  

What gives, and what am I doing wrong?

Editing, Error or problem, Export







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