2013-03-30 19:21:36 +00:00
|
|
|
All the numerical options, if not specified otherwise, accept a string
|
|
|
|
representing a number as input, which may be followed by one of the SI
|
|
|
|
unit prefixes, for example: 'K', 'M', or 'G'.
|
|
|
|
|
|
|
|
If 'i' is appended to the SI unit prefix, the complete prefix will be
|
2014-08-27 20:39:29 +00:00
|
|
|
interpreted as a unit prefix for binary multiples, which are based on
|
2013-03-30 19:21:36 +00:00
|
|
|
powers of 1024 instead of powers of 1000. Appending 'B' to the SI unit
|
|
|
|
prefix multiplies the value by 8. This allows using, for example:
|
|
|
|
'KB', 'MiB', 'G' and 'B' as number suffixes.
|
2010-06-09 21:28:53 +00:00
|
|
|
|
2010-06-16 19:16:20 +00:00
|
|
|
Options which do not take arguments are boolean options, and set the
|
|
|
|
corresponding value to true. They can be set to false by prefixing
|
2013-03-30 19:21:36 +00:00
|
|
|
the option name with "no". For example using "-nofoo"
|
|
|
|
will set the boolean option with name "foo" to false.
|
2010-06-16 19:16:20 +00:00
|
|
|
|
2011-12-13 10:23:06 +00:00
|
|
|
@anchor{Stream specifiers}
|
2011-09-03 12:55:39 +00:00
|
|
|
@section Stream specifiers
|
|
|
|
Some options are applied per-stream, e.g. bitrate or codec. Stream specifiers
|
2013-03-30 19:26:21 +00:00
|
|
|
are used to precisely specify which stream(s) a given option belongs to.
|
2011-09-03 12:55:39 +00:00
|
|
|
|
|
|
|
A stream specifier is a string generally appended to the option name and
|
2013-03-30 19:26:21 +00:00
|
|
|
separated from it by a colon. E.g. @code{-codec:a:1 ac3} contains the
|
|
|
|
@code{a:1} stream specifier, which matches the second audio stream. Therefore, it
|
2011-09-03 12:55:39 +00:00
|
|
|
would select the ac3 codec for the second audio stream.
|
|
|
|
|
2013-03-30 19:26:21 +00:00
|
|
|
A stream specifier can match several streams, so that the option is applied to all
|
2011-09-03 12:55:39 +00:00
|
|
|
of them. E.g. the stream specifier in @code{-b:a 128k} matches all audio
|
|
|
|
streams.
|
|
|
|
|
2013-03-30 19:26:21 +00:00
|
|
|
An empty stream specifier matches all streams. For example, @code{-codec copy}
|
2011-09-03 12:55:39 +00:00
|
|
|
or @code{-codec: copy} would copy all the streams without reencoding.
|
|
|
|
|
|
|
|
Possible forms of stream specifiers are:
|
|
|
|
@table @option
|
|
|
|
@item @var{stream_index}
|
|
|
|
Matches the stream with this index. E.g. @code{-threads:1 4} would set the
|
|
|
|
thread count for the second stream to 4.
|
|
|
|
@item @var{stream_type}[:@var{stream_index}]
|
2013-03-30 19:26:21 +00:00
|
|
|
@var{stream_type} is one of following: 'v' for video, 'a' for audio, 's' for subtitle,
|
|
|
|
'd' for data, and 't' for attachments. If @var{stream_index} is given, then it matches
|
|
|
|
stream number @var{stream_index} of this type. Otherwise, it matches all
|
2011-09-27 08:37:22 +00:00
|
|
|
streams of this type.
|
2011-10-11 13:17:36 +00:00
|
|
|
@item p:@var{program_id}[:@var{stream_index}]
|
2013-03-30 19:26:21 +00:00
|
|
|
If @var{stream_index} is given, then it matches the stream with number @var{stream_index}
|
|
|
|
in the program with the id @var{program_id}. Otherwise, it matches all streams in the
|
|
|
|
program.
|
2014-03-13 13:16:00 +00:00
|
|
|
@item #@var{stream_id} or i:@var{stream_id}
|
|
|
|
Match the stream by stream id (e.g. PID in MPEG-TS container).
|
2014-08-13 22:41:08 +00:00
|
|
|
@item m:@var{key}[:@var{value}]
|
|
|
|
Matches streams with the metadata tag @var{key} having the specified value. If
|
|
|
|
@var{value} is not given, matches streams that contain the given tag with any
|
|
|
|
value.
|
|
|
|
|
2014-08-13 23:00:49 +00:00
|
|
|
Note that in @command{ffmpeg}, matching by metadata will only work properly for
|
2014-08-13 22:41:08 +00:00
|
|
|
input files.
|
2011-09-03 12:55:39 +00:00
|
|
|
@end table
|
2012-07-20 10:55:14 +00:00
|
|
|
|
2010-02-21 10:56:38 +00:00
|
|
|
@section Generic options
|
|
|
|
|
2013-03-27 00:43:37 +00:00
|
|
|
These options are shared amongst the ff* tools.
|
2010-02-21 10:56:38 +00:00
|
|
|
|
|
|
|
@table @option
|
|
|
|
|
2009-12-21 21:32:09 +00:00
|
|
|
@item -L
|
|
|
|
Show license.
|
|
|
|
|
2012-08-13 18:06:25 +00:00
|
|
|
@item -h, -?, -help, --help [@var{arg}]
|
|
|
|
Show help. An optional parameter may be specified to print help about a specific
|
2013-09-16 22:14:54 +00:00
|
|
|
item. If no argument is specified, only basic (non advanced) tool
|
|
|
|
options are shown.
|
2012-08-13 18:06:25 +00:00
|
|
|
|
|
|
|
Possible values of @var{arg} are:
|
|
|
|
@table @option
|
2013-09-16 22:14:54 +00:00
|
|
|
@item long
|
|
|
|
Print advanced tool options in addition to the basic tool options.
|
|
|
|
|
|
|
|
@item full
|
|
|
|
Print complete list of options, including shared and private options
|
|
|
|
for encoders, decoders, demuxers, muxers, filters, etc.
|
|
|
|
|
2012-08-13 18:06:25 +00:00
|
|
|
@item decoder=@var{decoder_name}
|
|
|
|
Print detailed information about the decoder named @var{decoder_name}. Use the
|
|
|
|
@option{-decoders} option to get a list of all decoders.
|
|
|
|
|
|
|
|
@item encoder=@var{encoder_name}
|
|
|
|
Print detailed information about the encoder named @var{encoder_name}. Use the
|
|
|
|
@option{-encoders} option to get a list of all encoders.
|
2012-08-14 05:57:56 +00:00
|
|
|
|
|
|
|
@item demuxer=@var{demuxer_name}
|
|
|
|
Print detailed information about the demuxer named @var{demuxer_name}. Use the
|
|
|
|
@option{-formats} option to get a list of all demuxers and muxers.
|
|
|
|
|
|
|
|
@item muxer=@var{muxer_name}
|
|
|
|
Print detailed information about the muxer named @var{muxer_name}. Use the
|
|
|
|
@option{-formats} option to get a list of all muxers and demuxers.
|
|
|
|
|
2013-03-28 08:29:00 +00:00
|
|
|
@item filter=@var{filter_name}
|
|
|
|
Print detailed information about the filter name @var{filter_name}. Use the
|
|
|
|
@option{-filters} option to get a list of all filters.
|
2012-08-13 18:06:25 +00:00
|
|
|
@end table
|
2009-12-21 21:32:09 +00:00
|
|
|
|
|
|
|
@item -version
|
|
|
|
Show version.
|
|
|
|
|
|
|
|
@item -formats
|
2014-10-24 21:31:03 +00:00
|
|
|
Show available formats (including devices).
|
|
|
|
|
|
|
|
@item -devices
|
|
|
|
Show available devices.
|
2009-12-21 21:32:09 +00:00
|
|
|
|
|
|
|
@item -codecs
|
2012-08-11 13:23:22 +00:00
|
|
|
Show all codecs known to libavcodec.
|
2009-12-21 21:32:09 +00:00
|
|
|
|
2012-08-11 13:23:22 +00:00
|
|
|
Note that the term 'codec' is used throughout this documentation as a shortcut
|
|
|
|
for what is more correctly called a media bitstream format.
|
|
|
|
|
|
|
|
@item -decoders
|
|
|
|
Show available decoders.
|
|
|
|
|
|
|
|
@item -encoders
|
|
|
|
Show all available encoders.
|
2009-12-21 21:32:09 +00:00
|
|
|
|
|
|
|
@item -bsfs
|
|
|
|
Show available bitstream filters.
|
|
|
|
|
|
|
|
@item -protocols
|
|
|
|
Show available protocols.
|
|
|
|
|
|
|
|
@item -filters
|
|
|
|
Show available libavfilter filters.
|
|
|
|
|
2009-12-21 21:53:03 +00:00
|
|
|
@item -pix_fmts
|
|
|
|
Show available pixel formats.
|
|
|
|
|
2011-08-31 06:51:15 +00:00
|
|
|
@item -sample_fmts
|
|
|
|
Show available sample formats.
|
|
|
|
|
2012-07-29 22:34:01 +00:00
|
|
|
@item -layouts
|
|
|
|
Show channel names and standard channel layouts.
|
|
|
|
|
2013-10-17 17:04:16 +00:00
|
|
|
@item -colors
|
|
|
|
Show recognized color names.
|
|
|
|
|
2014-08-06 22:45:26 +00:00
|
|
|
@item -sources @var{device}[,@var{opt1}=@var{val1}[,@var{opt2}=@var{val2}]...]
|
|
|
|
Show autodetected sources of the intput device.
|
|
|
|
Some devices may provide system-dependent source names that cannot be autodetected.
|
|
|
|
The returned list cannot be assumed to be always complete.
|
|
|
|
@example
|
|
|
|
ffmpeg -sources pulse,server=192.168.0.4
|
|
|
|
@end example
|
|
|
|
|
|
|
|
@item -sinks @var{device}[,@var{opt1}=@var{val1}[,@var{opt2}=@var{val2}]...]
|
|
|
|
Show autodetected sinks of the output device.
|
|
|
|
Some devices may provide system-dependent sink names that cannot be autodetected.
|
|
|
|
The returned list cannot be assumed to be always complete.
|
|
|
|
@example
|
|
|
|
ffmpeg -sinks pulse,server=192.168.0.4
|
|
|
|
@end example
|
|
|
|
|
2013-03-31 21:14:56 +00:00
|
|
|
@item -loglevel [repeat+]@var{loglevel} | -v [repeat+]@var{loglevel}
|
2009-12-21 21:32:09 +00:00
|
|
|
Set the logging level used by the library.
|
2013-03-31 21:14:56 +00:00
|
|
|
Adding "repeat+" indicates that repeated log output should not be compressed
|
|
|
|
to the first line and the "Last message repeated n times" line will be
|
|
|
|
omitted. "repeat" can also be used alone.
|
|
|
|
If "repeat" is used alone, and with no prior loglevel set, the default
|
|
|
|
loglevel will be used. If multiple loglevel parameters are given, using
|
|
|
|
'repeat' will not change the loglevel.
|
2009-12-21 21:32:09 +00:00
|
|
|
@var{loglevel} is a number or a string containing one of the following values:
|
|
|
|
@table @samp
|
|
|
|
@item quiet
|
2013-03-30 18:29:33 +00:00
|
|
|
Show nothing at all; be silent.
|
2009-12-21 21:32:09 +00:00
|
|
|
@item panic
|
2013-03-30 18:29:33 +00:00
|
|
|
Only show fatal errors which could lead the process to crash, such as
|
|
|
|
and assert failure. This is not currently used for anything.
|
2009-12-21 21:32:09 +00:00
|
|
|
@item fatal
|
2013-03-30 18:29:33 +00:00
|
|
|
Only show fatal errors. These are errors after which the process absolutely
|
|
|
|
cannot continue after.
|
2009-12-21 21:32:09 +00:00
|
|
|
@item error
|
2013-03-30 18:29:33 +00:00
|
|
|
Show all errors, including ones which can be recovered from.
|
2009-12-21 21:32:09 +00:00
|
|
|
@item warning
|
2013-03-30 18:29:33 +00:00
|
|
|
Show all warnings and errors. Any message related to possibly
|
|
|
|
incorrect or unexpected events will be shown.
|
2009-12-21 21:32:09 +00:00
|
|
|
@item info
|
2013-03-30 18:29:33 +00:00
|
|
|
Show informative messages during processing. This is in addition to
|
|
|
|
warnings and errors. This is the default value.
|
2009-12-21 21:32:09 +00:00
|
|
|
@item verbose
|
2013-03-30 18:29:33 +00:00
|
|
|
Same as @code{info}, except more verbose.
|
2009-12-21 21:32:09 +00:00
|
|
|
@item debug
|
2013-03-30 18:29:33 +00:00
|
|
|
Show everything, including debugging information.
|
2009-12-21 21:32:09 +00:00
|
|
|
@end table
|
|
|
|
|
2010-06-16 19:16:23 +00:00
|
|
|
By default the program logs to stderr, if coloring is supported by the
|
|
|
|
terminal, colors are used to mark errors and warnings. Log coloring
|
2010-12-06 21:47:10 +00:00
|
|
|
can be disabled setting the environment variable
|
2012-01-11 09:49:49 +00:00
|
|
|
@env{AV_LOG_FORCE_NOCOLOR} or @env{NO_COLOR}, or can be forced setting
|
|
|
|
the environment variable @env{AV_LOG_FORCE_COLOR}.
|
2010-12-06 22:24:21 +00:00
|
|
|
The use of the environment variable @env{NO_COLOR} is deprecated and
|
2011-03-17 15:55:58 +00:00
|
|
|
will be dropped in a following FFmpeg version.
|
2010-06-16 19:16:23 +00:00
|
|
|
|
2011-12-08 13:42:24 +00:00
|
|
|
@item -report
|
|
|
|
Dump full command line and console output to a file named
|
|
|
|
@code{@var{program}-@var{YYYYMMDD}-@var{HHMMSS}.log} in the current
|
|
|
|
directory.
|
|
|
|
This file can be useful for bug reports.
|
|
|
|
It also implies @code{-loglevel verbose}.
|
|
|
|
|
2012-12-16 12:05:08 +00:00
|
|
|
Setting the environment variable @code{FFREPORT} to any value has the
|
|
|
|
same effect. If the value is a ':'-separated key=value sequence, these
|
|
|
|
options will affect the report; options values must be escaped if they
|
|
|
|
contain special characters or the options delimiter ':' (see the
|
|
|
|
``Quoting and escaping'' section in the ffmpeg-utils manual). The
|
|
|
|
following option is recognized:
|
2012-11-02 12:15:51 +00:00
|
|
|
@table @option
|
|
|
|
@item file
|
|
|
|
set the file name to use for the report; @code{%p} is expanded to the name
|
|
|
|
of the program, @code{%t} is expanded to a timestamp, @code{%%} is expanded
|
|
|
|
to a plain @code{%}
|
2014-05-12 20:23:36 +00:00
|
|
|
@item level
|
|
|
|
set the log level
|
2012-11-02 12:15:51 +00:00
|
|
|
@end table
|
|
|
|
|
|
|
|
Errors in parsing the environment variable are not fatal, and will not
|
|
|
|
appear in the report.
|
2011-12-08 13:42:24 +00:00
|
|
|
|
2013-12-28 04:18:39 +00:00
|
|
|
@item -hide_banner
|
|
|
|
Suppress printing banner.
|
|
|
|
|
|
|
|
All FFmpeg tools will normally show a copyright notice, build options
|
|
|
|
and library versions. This option can be used to suppress printing
|
|
|
|
this information.
|
|
|
|
|
2012-03-07 01:57:53 +00:00
|
|
|
@item -cpuflags flags (@emph{global})
|
|
|
|
Allows setting and clearing cpu flags. This option is intended
|
|
|
|
for testing. Do not use it unless you know what you're doing.
|
2012-03-07 05:15:45 +00:00
|
|
|
@example
|
|
|
|
ffmpeg -cpuflags -sse+mmx ...
|
|
|
|
ffmpeg -cpuflags mmx ...
|
|
|
|
ffmpeg -cpuflags 0 ...
|
|
|
|
@end example
|
2013-03-30 18:41:45 +00:00
|
|
|
Possible flags for this option are:
|
|
|
|
@table @samp
|
|
|
|
@item x86
|
|
|
|
@table @samp
|
|
|
|
@item mmx
|
|
|
|
@item mmxext
|
|
|
|
@item sse
|
|
|
|
@item sse2
|
|
|
|
@item sse2slow
|
|
|
|
@item sse3
|
|
|
|
@item sse3slow
|
|
|
|
@item ssse3
|
|
|
|
@item atom
|
|
|
|
@item sse4.1
|
|
|
|
@item sse4.2
|
|
|
|
@item avx
|
2015-04-10 23:51:11 +00:00
|
|
|
@item avx2
|
2013-03-30 18:41:45 +00:00
|
|
|
@item xop
|
2015-04-10 23:51:11 +00:00
|
|
|
@item fma3
|
2013-03-30 18:41:45 +00:00
|
|
|
@item fma4
|
|
|
|
@item 3dnow
|
|
|
|
@item 3dnowext
|
2015-04-10 23:51:11 +00:00
|
|
|
@item bmi1
|
|
|
|
@item bmi2
|
2013-03-30 18:41:45 +00:00
|
|
|
@item cmov
|
|
|
|
@end table
|
|
|
|
@item ARM
|
|
|
|
@table @samp
|
|
|
|
@item armv5te
|
|
|
|
@item armv6
|
|
|
|
@item armv6t2
|
|
|
|
@item vfp
|
|
|
|
@item vfpv3
|
|
|
|
@item neon
|
2015-04-10 23:51:35 +00:00
|
|
|
@item setend
|
2013-03-30 18:41:45 +00:00
|
|
|
@end table
|
2015-04-10 23:52:29 +00:00
|
|
|
@item AArch64
|
|
|
|
@table @samp
|
|
|
|
@item armv8
|
|
|
|
@item vfp
|
|
|
|
@item neon
|
|
|
|
@end table
|
2013-03-30 18:41:45 +00:00
|
|
|
@item PowerPC
|
|
|
|
@table @samp
|
|
|
|
@item altivec
|
|
|
|
@end table
|
|
|
|
@item Specific Processors
|
|
|
|
@table @samp
|
|
|
|
@item pentium2
|
|
|
|
@item pentium3
|
|
|
|
@item pentium4
|
|
|
|
@item k6
|
|
|
|
@item k62
|
|
|
|
@item athlon
|
|
|
|
@item athlonxp
|
|
|
|
@item k8
|
|
|
|
@end table
|
|
|
|
@end table
|
2010-06-16 19:16:23 +00:00
|
|
|
|
2013-12-09 03:01:00 +00:00
|
|
|
@item -opencl_bench
|
|
|
|
Benchmark all available OpenCL devices and show the results. This option
|
|
|
|
is only available when FFmpeg has been compiled with @code{--enable-opencl}.
|
|
|
|
|
2013-04-12 18:05:10 +00:00
|
|
|
@item -opencl_options options (@emph{global})
|
|
|
|
Set OpenCL environment options. This option is only available when
|
|
|
|
FFmpeg has been compiled with @code{--enable-opencl}.
|
|
|
|
|
|
|
|
@var{options} must be a list of @var{key}=@var{value} option pairs
|
|
|
|
separated by ':'. See the ``OpenCL Options'' section in the
|
|
|
|
ffmpeg-utils manual for the list of supported options.
|
2010-02-21 10:56:38 +00:00
|
|
|
@end table
|
2011-07-17 12:54:20 +00:00
|
|
|
|
|
|
|
@section AVOptions
|
|
|
|
|
2011-07-28 15:43:24 +00:00
|
|
|
These options are provided directly by the libavformat, libavdevice and
|
|
|
|
libavcodec libraries. To see the list of available AVOptions, use the
|
2011-07-17 12:54:20 +00:00
|
|
|
@option{-help} option. They are separated into two categories:
|
|
|
|
@table @option
|
|
|
|
@item generic
|
2011-12-08 16:39:28 +00:00
|
|
|
These options can be set for any container, codec or device. Generic options
|
|
|
|
are listed under AVFormatContext options for containers/devices and under
|
2011-07-28 15:43:24 +00:00
|
|
|
AVCodecContext options for codecs.
|
2011-07-17 12:54:20 +00:00
|
|
|
@item private
|
2011-07-28 15:43:24 +00:00
|
|
|
These options are specific to the given container, device or codec. Private
|
|
|
|
options are listed under their corresponding containers/devices/codecs.
|
2011-07-17 12:54:20 +00:00
|
|
|
@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
|
|
|
|
|
2013-09-21 08:19:21 +00:00
|
|
|
All codec AVOptions are per-stream, and thus a stream specifier
|
|
|
|
should be attached to them.
|
2011-07-28 14:47:38 +00:00
|
|
|
|
2013-09-21 08:19:21 +00:00
|
|
|
Note: the @option{-nooption} syntax cannot be used for boolean
|
|
|
|
AVOptions, use @option{-option 0}/@option{-option 1}.
|
2011-07-28 14:47:38 +00:00
|
|
|
|
2013-09-21 08:19:21 +00:00
|
|
|
Note: the 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.
|