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authorAnton Khirnov <anton@khirnov.net>2011-09-02 22:17:38 +0200
committerAnton Khirnov <anton@khirnov.net>2011-09-11 17:30:04 +0200
commitb3dd2010afb46d5e91117067b5e9e1f9dcd18df8 (patch)
tree15d25de3492cb8634149e072f49c91b162f1c52c /doc/fftools-common-opts.texi
parent495ecfd139ac9bf8e467086e17efd7f1970972bc (diff)
doc: cosmetics, rename fftools-common-opts to avtools-....
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-All the numerical options, if not specified otherwise, accept in input
-a string representing a number, which may contain one of the
-International System number postfixes, for example 'K', 'M', 'G'.
-If 'i' is appended after the postfix, powers of 2 are used instead of
-powers of 10. The 'B' postfix multiplies the value for 8, and can be
-appended after another postfix or used alone. This allows using for
-example 'KB', 'MiB', 'G' and 'B' as postfix.
-
-Options which do not take arguments are boolean options, and set the
-corresponding value to true. They can be set to false by prefixing
-with "no" the option name, for example using "-nofoo" in the
-commandline will set to false the boolean option with name "foo".
-
-@section Generic options
-
-These options are shared amongst the ff* tools.
-
-@table @option
-
-@item -L
-Show license.
-
-@item -h, -?, -help, --help
-Show help.
-
-@item -version
-Show version.
-
-@item -formats
-Show available formats.
-
-The fields preceding the format names have the following meanings:
-@table @samp
-@item D
-Decoding available
-@item E
-Encoding available
-@end table
-
-@item -codecs
-Show available codecs.
-
-The fields preceding the codec names have the following meanings:
-@table @samp
-@item D
-Decoding available
-@item E
-Encoding available
-@item V/A/S
-Video/audio/subtitle codec
-@item S
-Codec supports slices
-@item D
-Codec supports direct rendering
-@item T
-Codec can handle input truncated at random locations instead of only at frame boundaries
-@end table
-
-@item -bsfs
-Show available bitstream filters.
-
-@item -protocols
-Show available protocols.
-
-@item -filters
-Show available libavfilter filters.
-
-@item -pix_fmts
-Show available pixel formats.
-
-@item -sample_fmts
-Show available sample formats.
-
-@item -loglevel @var{loglevel}
-Set the logging level used by the library.
-@var{loglevel} is a number or a string containing one of the following values:
-@table @samp
-@item quiet
-@item panic
-@item fatal
-@item error
-@item warning
-@item info
-@item verbose
-@item debug
-@end table
-
-By default the program logs to stderr, if coloring is supported by the
-terminal, colors are used to mark errors and warnings. Log coloring
-can be disabled setting the environment variable
-@env{FFMPEG_FORCE_NOCOLOR} or @env{NO_COLOR}, or can be forced setting
-the environment variable @env{FFMPEG_FORCE_COLOR}.
-The use of the environment variable @env{NO_COLOR} is deprecated and
-will be dropped in a following Libav version.
-
-@end table
-
-@section AVOptions
-
-These options are provided directly by the libavformat, libavdevice and
-libavcodec libraries. To see the list of available AVOptions, use the
-@option{-help} option. They are separated into two categories:
-@table @option
-@item generic
-These options can be set for any container, codec or device. Generic options are
-listed under AVFormatContext options for containers/devices and under
-AVCodecContext options for codecs.
-@item private
-These options are specific to the given container, device or codec. Private
-options are listed under their corresponding containers/devices/codecs.
-@end table
-
-For example to write an ID3v2.3 header instead of a default ID3v2.4 to
-an MP3 file, use the @option{id3v2_version} private option of the MP3
-muxer:
-@example
-ffmpeg -i input.flac -id3v2_version 3 out.mp3
-@end example
-
-You can precisely specify which stream(s) should the codec AVOption apply to by
-appending a stream specifier of the form
-@option{[:@var{stream_type}][:@var{stream_index}]} to the option name.
-@var{stream_type} is 'v' for video, 'a' for audio and 's' for subtitle streams.
-@var{stream_index} is a global stream index when @var{stream_type} isn't
-given, otherwise it counts streams of the given type only. As always, the index
-is zero-based. For example
-@example
--foo -- applies to all applicable streams
--foo:v -- applies to all video streams
--foo:a:2 -- applies to the third audio stream
--foo:0 -- applies to the first stream
-@end example
-
-Note -nooption syntax cannot be used for boolean AVOptions, use -option
-0/-option 1.
-
-Note2 old undocumented way of specifying per-stream AVOptions by prepending
-v/a/s to the options name is now obsolete and will be removed soon.