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doc/muxers: refresh the RCWT muxer's doc to be consistent with the demuxer
Signed-off-by: Marth64 <marth64@proxyid.net>
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@ -3126,19 +3126,18 @@ ogg files can be safely chained.
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@end table
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@anchor{rcwt}
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@anchor{rcwtenc}
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@section rcwt
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Raw Captions With Time (RCWT) is a format native to ccextractor, a commonly
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used open source tool for processing 608/708 closed caption (CC) sources.
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It can be used to archive the original, raw CC bitstream and to produce
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a source file for later CC processing or conversion. As a result,
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it also allows for interopability with ccextractor for processing CC data
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extracted via ffmpeg. The format is simple to parse and can be used
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to retain all lines and variants of CC.
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RCWT (Raw Captions With Time) is a format native to ccextractor, a commonly
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used open source tool for processing 608/708 Closed Captions (CC) sources.
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It can be used to archive the original extracted CC bitstream and to produce
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a source file for later processing or conversion. The format allows
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for interoperability between ccextractor and FFmpeg, is simple to parse,
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and can be used to create a backup of the CC presentation.
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This muxer implements the specification as of 2024-01-05, which has
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been stable and unchanged for 10 years as of this writing.
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This muxer implements the specification as of March 2024, which has
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been stable and unchanged since April 2014.
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This muxer will have some nuances from the way that ccextractor muxes RCWT.
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No compatibility issues when processing the output with ccextractor
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@ -3148,6 +3147,16 @@ and outputs will not be a bit-exact match.
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A free specification of RCWT can be found here:
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@url{https://github.com/CCExtractor/ccextractor/blob/master/docs/BINARY_FILE_FORMAT.TXT}
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@subsection Examples
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@itemize
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@item
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Extract Closed Captions to RCWT using lavfi:
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@example
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ffmpeg -f lavfi -i "movie=INPUT.mkv[out+subcc]" -map 0:s:0 -c:s copy -f rcwt CC.rcwt.bin
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@end example
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@end itemize
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@anchor{segment}
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@section segment, stream_segment, ssegment
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