a6be21d3ba
This reverts commit f8a45fa1b1764b34d4263eacd93411e8ba0484a4. Conflicts: doc/optimization.txt
94 lines
2.3 KiB
Plaintext
94 lines
2.3 KiB
Plaintext
All the numerical options, if not specified otherwise, accept in input
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a string representing a number, which may contain one of the
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International System number postfixes, for example 'K', 'M', 'G'.
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If 'i' is appended after the postfix, powers of 2 are used instead of
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powers of 10. The 'B' postfix multiplies the value for 8, and can be
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appended after another postfix or used alone. This allows using for
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example 'KB', 'MiB', 'G' and 'B' as postfix.
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Options which do not take arguments are boolean options, and set the
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corresponding value to true. They can be set to false by prefixing
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with "no" the option name, for example using "-nofoo" in the
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commandline will set to false the boolean option with name "foo".
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@section Generic options
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These options are shared amongst the ff* tools.
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@table @option
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@item -L
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Show license.
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@item -h, -?, -help, --help
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Show help.
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@item -version
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Show version.
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@item -formats
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Show available formats.
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The fields preceding the format names have the following meanings:
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@table @samp
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@item D
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Decoding available
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@item E
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Encoding available
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@end table
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@item -codecs
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Show available codecs.
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The fields preceding the codec names have the following meanings:
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@table @samp
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@item D
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Decoding available
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@item E
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Encoding available
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@item V/A/S
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Video/audio/subtitle codec
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@item S
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Codec supports slices
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@item D
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Codec supports direct rendering
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@item T
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Codec can handle input truncated at random locations instead of only at frame boundaries
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@end table
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@item -bsfs
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Show available bitstream filters.
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@item -protocols
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Show available protocols.
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@item -filters
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Show available libavfilter filters.
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@item -pix_fmts
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Show available pixel formats.
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@item -loglevel @var{loglevel}
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Set the logging level used by the library.
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@var{loglevel} is a number or a string containing one of the following values:
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@table @samp
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@item quiet
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@item panic
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@item fatal
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@item error
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@item warning
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@item info
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@item verbose
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@item debug
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@end table
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By default the program logs to stderr, if coloring is supported by the
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terminal, colors are used to mark errors and warnings. Log coloring
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can be disabled setting the environment variable
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@env{FFMPEG_FORCE_NOCOLOR} or @env{NO_COLOR}, or can be forced setting
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the environment variable @env{FFMPEG_FORCE_COLOR}.
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The use of the environment variable @env{NO_COLOR} is deprecated and
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will be dropped in a following FFmpeg version.
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@end table
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