Option to NOT convert Closed Captions to text subtitles

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Toad King
Posts: 70
Joined: Sun Jul 03, 2022 6:46 pm

Option to NOT convert Closed Captions to text subtitles

Post by Toad King »

Is there an option to leave any CC streams alone and just include them muxed with the video stream? Unchecking the subtitles box still has MakeMKV remove the subtitle info from the video stream from the final file. Converting them to plain SRT subtitles loses some positioning info and I want to try preserving that.
Mr. Red
Posts: 33
Joined: Wed Nov 01, 2023 10:19 am

Re: Option to NOT convert Closed Captions to text subtitles

Post by Mr. Red »

MakeMKV is not changing the videostream, only remuxing it into a Matroska container. Therefore the CC info that is embedded in the video stream should stay intact. But I could be wrong.

MakeMKV uses ccextractor under the hood to convert the closed captions data to srt. But ccextractor itself can also extract a raw or grid format, with the positioning intact. Problem is these formats are not supported by media players directly, but you could use them as base to create subtitles with positioning data like ass/ssa.
ccextractor can also export to ass/ssa. But as far as I know, the positioning data is not automatically converted and included.

see:
https://github.com/CCExtractor/ccextractor/issues/1108
https://ccextractor.org/public/general/ ... ine_usage/

viewtopic.php?p=68079#p68079
Toad King
Posts: 70
Joined: Sun Jul 03, 2022 6:46 pm

Re: Option to NOT convert Closed Captions to text subtitles

Post by Toad King »

I don't think MakeMKV is leaving it in the video stream. Any method for extracting/viewing it doesn't seem to work and if I copy my disc with another tool (like dvd_copy) I do get a file with the subtitle info, and the video stream in that copy is ~1MB larger than the one MakeMKV generates.
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