diff options
| author | Marth64 <[email protected]> | 2024-04-02 00:24:57 -0500 |
|---|---|---|
| committer | Stefano Sabatini <[email protected]> | 2024-04-02 20:09:05 +0200 |
| commit | 0866b2ba5ea64127d670f9ce35d34bd9c2708cc9 (patch) | |
| tree | 7915dfe972fb49eaafd3c7e494e4f3c4eee5de1b | |
| parent | 58f04608c21b5f8c0db81ab4b0c65b147e98b5ea (diff) | |
doc/muxers: refresh the RCWT muxer's doc to be consistent with the demuxer
Signed-off-by: Marth64 <[email protected]>
| -rw-r--r-- | doc/muxers.texi | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/doc/muxers.texi b/doc/muxers.texi index 39597e000b..d8a1f83309 100644 --- a/doc/muxers.texi +++ b/doc/muxers.texi @@ -3126,19 +3126,18 @@ ogg files can be safely chained. @end table -@anchor{rcwt} +@anchor{rcwtenc} @section rcwt -Raw Captions With Time (RCWT) is a format native to ccextractor, a commonly -used open source tool for processing 608/708 closed caption (CC) sources. -It can be used to archive the original, raw CC bitstream and to produce -a source file for later CC processing or conversion. As a result, -it also allows for interopability with ccextractor for processing CC data -extracted via ffmpeg. The format is simple to parse and can be used -to retain all lines and variants of CC. +RCWT (Raw Captions With Time) is a format native to ccextractor, a commonly +used open source tool for processing 608/708 Closed Captions (CC) sources. +It can be used to archive the original extracted CC bitstream and to produce +a source file for later processing or conversion. The format allows +for interoperability between ccextractor and FFmpeg, is simple to parse, +and can be used to create a backup of the CC presentation. -This muxer implements the specification as of 2024-01-05, which has -been stable and unchanged for 10 years as of this writing. +This muxer implements the specification as of March 2024, which has +been stable and unchanged since April 2014. This muxer will have some nuances from the way that ccextractor muxes RCWT. No compatibility issues when processing the output with ccextractor @@ -3148,6 +3147,16 @@ and outputs will not be a bit-exact match. A free specification of RCWT can be found here: @url{https://github.com/CCExtractor/ccextractor/blob/master/docs/BINARY_FILE_FORMAT.TXT} +@subsection Examples + +@itemize +@item +Extract Closed Captions to RCWT using lavfi: +@example +ffmpeg -f lavfi -i "movie=INPUT.mkv[out+subcc]" -map 0:s:0 -c:s copy -f rcwt CC.rcwt.bin +@end example +@end itemize + @anchor{segment} @section segment, stream_segment, ssegment |