[FFmpeg-devel] [PATCH] doc/bitstream_filters: add filter_units practical examples for removing closed captions

[Marth64 <marth64@proxyid.net>]

---
 doc/bitstream_filters.texi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/doc/bitstream_filters.texi b/doc/bitstream_filters.texi
index c63c20370f..d2ad6e78ff 100644
--- a/doc/bitstream_filters.texi
+++ b/doc/bitstream_filters.texi
@@ -213,6 +213,24 @@ To remove all AUDs, SEI and filler from an H.265 stream:
 ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=remove_types=35|38-40' OUTPUT
 @end example
 
+SEI messages are commonly used to contain Closed Captions as well as other metadata such as dynamic HDR.
+This filter can be used to remove the SEI messages if desired.
+
+To remove SEI messages (including CC) from a MPEG-2 stream:
+@example
+ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=remove_types=178' OUTPUT
+@end example
+
+To remove SEI messages (including CC) from a H264 stream:
+@example
+ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=remove_types=6' OUTPUT
+@end example
+
+To remove SEI messages (including CC and dynamic HDR) from a HEVC stream:
+@example
+ffmpeg -i INPUT -c:v copy -bsf:v 'filter_units=remove_types=39' OUTPUT
+@end example
+
 @section hapqa_extract
 
 Extract Rgb or Alpha part of an HAPQA file, without recompression, in order to create an HAPQ or an HAPAlphaOnly file.
-- 
2.34.1

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