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[76.141.0.17]) by smtp-relay.gmail.com with ESMTPS id d13-20020a056e02214d00b0035d25366fe9sm326562ilv.63.2023.12.09.17.35.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 Dec 2023 17:35:59 -0800 (PST) X-Relaying-Domain: proxyid.net From: Marth64 To: ffmpeg-devel@ffmpeg.org Date: Sat, 9 Dec 2023 19:35:50 -0600 Message-Id: <20231210013550.786075-1-marth64@proxyid.net> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] doc/bitstream_filters: add filter_units practical examples for removing closed captions X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Marth64 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: KNQhrvSRPgck --- 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.