Changes between Version 1 and Version 2 of HowToExtractAndRemoveClosedCaptions


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Timestamp:
Nov 14, 2021, 9:30:53 AM (5 years ago)
Author:
Balling
Comment:

See ​https://en.wikipedia.org/w/index.php?title=CTA-708&diff=1048319574&oldid=1044481007

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  • HowToExtractAndRemoveClosedCaptions

    v1 v2  
    1111ffmpeg -f lavfi -i "movie=INPUT.mp4[out0+subcc]" -map s "OUTPUT.srt"
    1212}}}
    13 == Remove closed captions ==
     13== Remove closed captions in SEI ==
    1414This is achieved using the '''filter_units''' video bitstream filter.
    1515{{{
    1616ffmpeg -i "INPUT.mp4" -c copy -map 0 -bsf:v filter_units=remove_types=6 "OUTPUT.mp4"
    1717}}}
     18for AVC and remove_types=39 for HEVC. MPEG does not have SEI, so that will not work.
     19
     20Type SEI can have other information there, like HDR10+ metadata, so more accurate code is needed, see #5283.