@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 -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

