 Empty lines in subtitle output
I am creating MKV files with OCR'd subtitles. Now after I mux them using mkvmerge, there are sometimes empty lines visible in BSPlayer. I cannot find anything in common among various occurences of this issue.
Here's how it looks:
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* Normal subtitles, line 1.
* Normal subtitles, line 2.
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* * Some subs shifted up
* * * * * * *by one line.
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What could be the cause of this?
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