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diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst index 0572b66816..5ffc16cf89 100644 --- a/DOCS/man/options.rst +++ b/DOCS/man/options.rst @@ -2571,6 +2571,47 @@ Subtitles Default: ``no``. +``--sub-filter-regex-...=...`` + Set a list of regular expressions to match on text subtitles, and remove any + lines that match (default: empty). This is a string list option. See + `List Options`_ for details. Normally, you should use + ``--sub-filter-regex-append=<regex>``, where each option use will append a + new regular expression, without having to fight escaping problems. + + List items are matched in order. If a regular expression matches, the + process is stopped, and the subtitle line is discarded. The text matched + against is, currently, always the ``Text`` field of ASS events (if the + subtitle format is different, it is always converted). This may include + formatting tags. Matching is case-insensitive, but how this is done depends + on the libc, and most likely works in ASCII only. It does not work on + bitmap/image subtitles. Unavailable on inferior OSes (requires POSIX regex + support). + + .. admonition:: Example + + ``--sub-filter-regex-append=opensubtitles\.org`` filters some ads. + + Technically, using a list for matching is redundant, since you could just + use a single combined regular expression. But it helps with diagnosis, + ease of use, and temporarily disabling or enabling individual filters. + + .. warning:: + + This is experimental. The semantics most likely will change, and if you + use this, you should be prepared to update the option later. Ideas + include replacing the regexes with a very primitive and small subset of + sed, or some method to control case-sensitivity. + +``--sub-filter-regex-warn=<yes|no>`` + Log dropped lines with warning log level, instead of verbose (default: no). + Helpful for testing. + +``--sub-filter-regex-enable=<yes|no>`` + Whether to enable regex filtering (default: yes). Note that if no regexes + are added to the ``--sub-filter-regex`` list, setting this option to ``yes`` + has no default. It's meant to easily disable or enable filtering + temporarily. + ``--sub-create-cc-track=<yes|no>`` For every video stream, create a closed captions track (default: no). The only purpose is to make the track available for selection at the start of |