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[FFmpeg-devel,v10,4/5] doc/muxers: refresh the RCWT muxer's doc to be consistent with the demuxer

Message ID 20240328201132.1804716-5-marth64@proxyid.net
State New
Headers show
Series RCWT Closed Captions demuxer (v10) | expand

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Commit Message

Marth64 March 28, 2024, 8:11 p.m. UTC 
Signed-off-by: Marth64 <marth64@proxyid.net>
---
 doc/muxers.texi | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)
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Patch

diff --git a/doc/muxers.texi b/doc/muxers.texi
index a10a8e216f..4161401059 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -3038,19 +3038,18 @@  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
@@ -3060,6 +3059,16 @@  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 CC.rcwt.bin
+@end example
+@end itemize
+
 @anchor{segment}
 @section segment, stream_segment, ssegment