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yading@10: .\" ========================================================================
yading@10: .\"
yading@10: .IX Title "FFPROBE 1"
yading@10: .TH FFPROBE 1 "2013-04-21" " " " "
yading@10: .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
yading@10: .\" way too many mistakes in technical documents.
yading@10: .if n .ad l
yading@10: .nh
yading@10: .SH "NAME"
yading@10: ffprobe \- ffprobe media prober
yading@10: .SH "SYNOPSIS"
yading@10: .IX Header "SYNOPSIS"
yading@10: ffprobe [\fIoptions\fR] [\fIinput_file\fR]
yading@10: .SH "DESCRIPTION"
yading@10: .IX Header "DESCRIPTION"
yading@10: ffprobe gathers information from multimedia streams and prints it in
yading@10: human\- and machine-readable fashion.
yading@10: .PP
yading@10: For example it can be used to check the format of the container used
yading@10: by a multimedia stream and the format and type of each media stream
yading@10: contained in it.
yading@10: .PP
yading@10: If a filename is specified in input, ffprobe will try to open and
yading@10: probe the file content. If the file cannot be opened or recognized as
yading@10: a multimedia file, a positive exit code is returned.
yading@10: .PP
yading@10: ffprobe may be employed both as a standalone application or in
yading@10: combination with a textual filter, which may perform more
yading@10: sophisticated processing, e.g. statistical processing or plotting.
yading@10: .PP
yading@10: Options are used to list some of the formats supported by ffprobe or
yading@10: for specifying which information to display, and for setting how
yading@10: ffprobe will show it.
yading@10: .PP
yading@10: ffprobe output is designed to be easily parsable by a textual filter,
yading@10: and consists of one or more sections of a form defined by the selected
yading@10: writer, which is specified by the \fBprint_format\fR option.
yading@10: .PP
yading@10: Sections may contain other nested sections, and are identified by a
yading@10: name (which may be shared by other sections), and an unique
yading@10: name. See the output of \fBsections\fR.
yading@10: .PP
yading@10: Metadata tags stored in the container or in the streams are recognized
yading@10: and printed in the corresponding \*(L"\s-1FORMAT\s0\*(R" or \*(L"\s-1STREAM\s0\*(R" section.
yading@10: .SH "OPTIONS"
yading@10: .IX Header "OPTIONS"
yading@10: All the numerical options, if not specified otherwise, accept a string
yading@10: representing a number as input, which may be followed by one of the \s-1SI\s0
yading@10: unit prefixes, for example: 'K', 'M', or 'G'.
yading@10: .PP
yading@10: If 'i' is appended to the \s-1SI\s0 unit prefix, the complete prefix will be
yading@10: interpreted as a unit prefix for binary multiplies, which are based on
yading@10: powers of 1024 instead of powers of 1000. Appending 'B' to the \s-1SI\s0 unit
yading@10: prefix multiplies the value by 8. This allows using, for example:
yading@10: \&'\s-1KB\s0', 'MiB', 'G' and 'B' as number suffixes.
yading@10: .PP
yading@10: Options which do not take arguments are boolean options, and set the
yading@10: corresponding value to true. They can be set to false by prefixing
yading@10: the option name with \*(L"no\*(R". For example using \*(L"\-nofoo\*(R"
yading@10: will set the boolean option with name \*(L"foo\*(R" to false.
yading@10: .SS "Stream specifiers"
yading@10: .IX Subsection "Stream specifiers"
yading@10: Some options are applied per-stream, e.g. bitrate or codec. Stream specifiers
yading@10: are used to precisely specify which stream(s) a given option belongs to.
yading@10: .PP
yading@10: A stream specifier is a string generally appended to the option name and
yading@10: separated from it by a colon. E.g. \f(CW\*(C`\-codec:a:1 ac3\*(C'\fR contains the
yading@10: \&\f(CW\*(C`a:1\*(C'\fR stream specifier, which matches the second audio stream. Therefore, it
yading@10: would select the ac3 codec for the second audio stream.
yading@10: .PP
yading@10: A stream specifier can match several streams, so that the option is applied to all
yading@10: of them. E.g. the stream specifier in \f(CW\*(C`\-b:a 128k\*(C'\fR matches all audio
yading@10: streams.
yading@10: .PP
yading@10: An empty stream specifier matches all streams. For example, \f(CW\*(C`\-codec copy\*(C'\fR
yading@10: or \f(CW\*(C`\-codec: copy\*(C'\fR would copy all the streams without reencoding.
yading@10: .PP
yading@10: Possible forms of stream specifiers are:
yading@10: .IP "\fIstream_index\fR" 4
yading@10: .IX Item "stream_index"
yading@10: Matches the stream with this index. E.g. \f(CW\*(C`\-threads:1 4\*(C'\fR would set the
yading@10: thread count for the second stream to 4.
yading@10: .IP "\fIstream_type\fR\fB[:\fR\fIstream_index\fR\fB]\fR" 4
yading@10: .IX Item "stream_type[:stream_index]"
yading@10: \&\fIstream_type\fR is one of following: 'v' for video, 'a' for audio, 's' for subtitle,
yading@10: \&'d' for data, and 't' for attachments. If \fIstream_index\fR is given, then it matches
yading@10: stream number \fIstream_index\fR of this type. Otherwise, it matches all
yading@10: streams of this type.
yading@10: .IP "\fBp:\fR\fIprogram_id\fR\fB[:\fR\fIstream_index\fR\fB]\fR" 4
yading@10: .IX Item "p:program_id[:stream_index]"
yading@10: If \fIstream_index\fR is given, then it matches the stream with number \fIstream_index\fR
yading@10: in the program with the id \fIprogram_id\fR. Otherwise, it matches all streams in the
yading@10: program.
yading@10: .IP "\fB#\fR\fIstream_id\fR" 4
yading@10: .IX Item "#stream_id"
yading@10: Matches the stream by a format-specific \s-1ID\s0.
yading@10: .SS "Generic options"
yading@10: .IX Subsection "Generic options"
yading@10: These options are shared amongst the ff* tools.
yading@10: .IP "\fB\-L\fR" 4
yading@10: .IX Item "-L"
yading@10: Show license.
yading@10: .IP "\fB\-h, \-?, \-help, \-\-help [\fR\fIarg\fR\fB]\fR" 4
yading@10: .IX Item "-h, -?, -help, --help [arg]"
yading@10: Show help. An optional parameter may be specified to print help about a specific
yading@10: item.
yading@10: .Sp
yading@10: Possible values of \fIarg\fR are:
yading@10: .RS 4
yading@10: .IP "\fBdecoder=\fR\fIdecoder_name\fR" 4
yading@10: .IX Item "decoder=decoder_name"
yading@10: Print detailed information about the decoder named \fIdecoder_name\fR. Use the
yading@10: \&\fB\-decoders\fR option to get a list of all decoders.
yading@10: .IP "\fBencoder=\fR\fIencoder_name\fR" 4
yading@10: .IX Item "encoder=encoder_name"
yading@10: Print detailed information about the encoder named \fIencoder_name\fR. Use the
yading@10: \&\fB\-encoders\fR option to get a list of all encoders.
yading@10: .IP "\fBdemuxer=\fR\fIdemuxer_name\fR" 4
yading@10: .IX Item "demuxer=demuxer_name"
yading@10: Print detailed information about the demuxer named \fIdemuxer_name\fR. Use the
yading@10: \&\fB\-formats\fR option to get a list of all demuxers and muxers.
yading@10: .IP "\fBmuxer=\fR\fImuxer_name\fR" 4
yading@10: .IX Item "muxer=muxer_name"
yading@10: Print detailed information about the muxer named \fImuxer_name\fR. Use the
yading@10: \&\fB\-formats\fR option to get a list of all muxers and demuxers.
yading@10: .IP "\fBfilter=\fR\fIfilter_name\fR" 4
yading@10: .IX Item "filter=filter_name"
yading@10: Print detailed information about the filter name \fIfilter_name\fR. Use the
yading@10: \&\fB\-filters\fR option to get a list of all filters.
yading@10: .RE
yading@10: .RS 4
yading@10: .RE
yading@10: .IP "\fB\-version\fR" 4
yading@10: .IX Item "-version"
yading@10: Show version.
yading@10: .IP "\fB\-formats\fR" 4
yading@10: .IX Item "-formats"
yading@10: Show available formats.
yading@10: .IP "\fB\-codecs\fR" 4
yading@10: .IX Item "-codecs"
yading@10: Show all codecs known to libavcodec.
yading@10: .Sp
yading@10: Note that the term 'codec' is used throughout this documentation as a shortcut
yading@10: for what is more correctly called a media bitstream format.
yading@10: .IP "\fB\-decoders\fR" 4
yading@10: .IX Item "-decoders"
yading@10: Show available decoders.
yading@10: .IP "\fB\-encoders\fR" 4
yading@10: .IX Item "-encoders"
yading@10: Show all available encoders.
yading@10: .IP "\fB\-bsfs\fR" 4
yading@10: .IX Item "-bsfs"
yading@10: Show available bitstream filters.
yading@10: .IP "\fB\-protocols\fR" 4
yading@10: .IX Item "-protocols"
yading@10: Show available protocols.
yading@10: .IP "\fB\-filters\fR" 4
yading@10: .IX Item "-filters"
yading@10: Show available libavfilter filters.
yading@10: .IP "\fB\-pix_fmts\fR" 4
yading@10: .IX Item "-pix_fmts"
yading@10: Show available pixel formats.
yading@10: .IP "\fB\-sample_fmts\fR" 4
yading@10: .IX Item "-sample_fmts"
yading@10: Show available sample formats.
yading@10: .IP "\fB\-layouts\fR" 4
yading@10: .IX Item "-layouts"
yading@10: Show channel names and standard channel layouts.
yading@10: .IP "\fB\-loglevel [repeat+]\fR\fIloglevel\fR \fB| \-v [repeat+]\fR\fIloglevel\fR" 4
yading@10: .IX Item "-loglevel [repeat+]loglevel | -v [repeat+]loglevel"
yading@10: Set the logging level used by the library.
yading@10: Adding \*(L"repeat+\*(R" indicates that repeated log output should not be compressed
yading@10: to the first line and the \*(L"Last message repeated n times\*(R" line will be
yading@10: omitted. \*(L"repeat\*(R" can also be used alone.
yading@10: If \*(L"repeat\*(R" is used alone, and with no prior loglevel set, the default
yading@10: loglevel will be used. If multiple loglevel parameters are given, using
yading@10: \&'repeat' will not change the loglevel.
yading@10: \&\fIloglevel\fR is a number or a string containing one of the following values:
yading@10: .RS 4
yading@10: .IP "\fBquiet\fR" 4
yading@10: .IX Item "quiet"
yading@10: Show nothing at all; be silent.
yading@10: .IP "\fBpanic\fR" 4
yading@10: .IX Item "panic"
yading@10: Only show fatal errors which could lead the process to crash, such as
yading@10: and assert failure. This is not currently used for anything.
yading@10: .IP "\fBfatal\fR" 4
yading@10: .IX Item "fatal"
yading@10: Only show fatal errors. These are errors after which the process absolutely
yading@10: cannot continue after.
yading@10: .IP "\fBerror\fR" 4
yading@10: .IX Item "error"
yading@10: Show all errors, including ones which can be recovered from.
yading@10: .IP "\fBwarning\fR" 4
yading@10: .IX Item "warning"
yading@10: Show all warnings and errors. Any message related to possibly
yading@10: incorrect or unexpected events will be shown.
yading@10: .IP "\fBinfo\fR" 4
yading@10: .IX Item "info"
yading@10: Show informative messages during processing. This is in addition to
yading@10: warnings and errors. This is the default value.
yading@10: .IP "\fBverbose\fR" 4
yading@10: .IX Item "verbose"
yading@10: Same as \f(CW\*(C`info\*(C'\fR, except more verbose.
yading@10: .IP "\fBdebug\fR" 4
yading@10: .IX Item "debug"
yading@10: Show everything, including debugging information.
yading@10: .RE
yading@10: .RS 4
yading@10: .Sp
yading@10: By default the program logs to stderr, if coloring is supported by the
yading@10: terminal, colors are used to mark errors and warnings. Log coloring
yading@10: can be disabled setting the environment variable
yading@10: \&\fB\s-1AV_LOG_FORCE_NOCOLOR\s0\fR or \fB\s-1NO_COLOR\s0\fR, or can be forced setting
yading@10: the environment variable \fB\s-1AV_LOG_FORCE_COLOR\s0\fR.
yading@10: The use of the environment variable \fB\s-1NO_COLOR\s0\fR is deprecated and
yading@10: will be dropped in a following FFmpeg version.
yading@10: .RE
yading@10: .IP "\fB\-report\fR" 4
yading@10: .IX Item "-report"
yading@10: Dump full command line and console output to a file named
yading@10: \&\f(CW\*(C`\f(CIprogram\f(CW\-\f(CIYYYYMMDD\f(CW\-\f(CIHHMMSS\f(CW.log\*(C'\fR in the current
yading@10: directory.
yading@10: This file can be useful for bug reports.
yading@10: It also implies \f(CW\*(C`\-loglevel verbose\*(C'\fR.
yading@10: .Sp
yading@10: Setting the environment variable \f(CW\*(C`FFREPORT\*(C'\fR to any value has the
yading@10: same effect. If the value is a ':'\-separated key=value sequence, these
yading@10: options will affect the report; options values must be escaped if they
yading@10: contain special characters or the options delimiter ':' (see the
yading@10: ``Quoting and escaping'' section in the ffmpeg-utils manual). The
yading@10: following option is recognized:
yading@10: .RS 4
yading@10: .IP "\fBfile\fR" 4
yading@10: .IX Item "file"
yading@10: set the file name to use for the report; \f(CW%p\fR is expanded to the name
yading@10: of the program, \f(CW%t\fR is expanded to a timestamp, \f(CW\*(C`%%\*(C'\fR is expanded
yading@10: to a plain \f(CW\*(C`%\*(C'\fR
yading@10: .RE
yading@10: .RS 4
yading@10: .Sp
yading@10: Errors in parsing the environment variable are not fatal, and will not
yading@10: appear in the report.
yading@10: .RE
yading@10: .IP "\fB\-cpuflags flags (\fR\fIglobal\fR\fB)\fR" 4
yading@10: .IX Item "-cpuflags flags (global)"
yading@10: Allows setting and clearing cpu flags. This option is intended
yading@10: for testing. Do not use it unless you know what you're doing.
yading@10: .Sp
yading@10: .Vb 3
yading@10: \&        ffmpeg \-cpuflags \-sse+mmx ...
yading@10: \&        ffmpeg \-cpuflags mmx ...
yading@10: \&        ffmpeg \-cpuflags 0 ...
yading@10: .Ve
yading@10: .Sp
yading@10: Possible flags for this option are:
yading@10: .RS 4
yading@10: .IP "\fBx86\fR" 4
yading@10: .IX Item "x86"
yading@10: .RS 4
yading@10: .PD 0
yading@10: .IP "\fBmmx\fR" 4
yading@10: .IX Item "mmx"
yading@10: .IP "\fBmmxext\fR" 4
yading@10: .IX Item "mmxext"
yading@10: .IP "\fBsse\fR" 4
yading@10: .IX Item "sse"
yading@10: .IP "\fBsse2\fR" 4
yading@10: .IX Item "sse2"
yading@10: .IP "\fBsse2slow\fR" 4
yading@10: .IX Item "sse2slow"
yading@10: .IP "\fBsse3\fR" 4
yading@10: .IX Item "sse3"
yading@10: .IP "\fBsse3slow\fR" 4
yading@10: .IX Item "sse3slow"
yading@10: .IP "\fBssse3\fR" 4
yading@10: .IX Item "ssse3"
yading@10: .IP "\fBatom\fR" 4
yading@10: .IX Item "atom"
yading@10: .IP "\fBsse4.1\fR" 4
yading@10: .IX Item "sse4.1"
yading@10: .IP "\fBsse4.2\fR" 4
yading@10: .IX Item "sse4.2"
yading@10: .IP "\fBavx\fR" 4
yading@10: .IX Item "avx"
yading@10: .IP "\fBxop\fR" 4
yading@10: .IX Item "xop"
yading@10: .IP "\fBfma4\fR" 4
yading@10: .IX Item "fma4"
yading@10: .IP "\fB3dnow\fR" 4
yading@10: .IX Item "3dnow"
yading@10: .IP "\fB3dnowext\fR" 4
yading@10: .IX Item "3dnowext"
yading@10: .IP "\fBcmov\fR" 4
yading@10: .IX Item "cmov"
yading@10: .RE
yading@10: .RS 4
yading@10: .RE
yading@10: .IP "\fB\s-1ARM\s0\fR" 4
yading@10: .IX Item "ARM"
yading@10: .RS 4
yading@10: .IP "\fBarmv5te\fR" 4
yading@10: .IX Item "armv5te"
yading@10: .IP "\fBarmv6\fR" 4
yading@10: .IX Item "armv6"
yading@10: .IP "\fBarmv6t2\fR" 4
yading@10: .IX Item "armv6t2"
yading@10: .IP "\fBvfp\fR" 4
yading@10: .IX Item "vfp"
yading@10: .IP "\fBvfpv3\fR" 4
yading@10: .IX Item "vfpv3"
yading@10: .IP "\fBneon\fR" 4
yading@10: .IX Item "neon"
yading@10: .RE
yading@10: .RS 4
yading@10: .RE
yading@10: .IP "\fBPowerPC\fR" 4
yading@10: .IX Item "PowerPC"
yading@10: .RS 4
yading@10: .IP "\fBaltivec\fR" 4
yading@10: .IX Item "altivec"
yading@10: .RE
yading@10: .RS 4
yading@10: .RE
yading@10: .IP "\fBSpecific Processors\fR" 4
yading@10: .IX Item "Specific Processors"
yading@10: .RS 4
yading@10: .IP "\fBpentium2\fR" 4
yading@10: .IX Item "pentium2"
yading@10: .IP "\fBpentium3\fR" 4
yading@10: .IX Item "pentium3"
yading@10: .IP "\fBpentium4\fR" 4
yading@10: .IX Item "pentium4"
yading@10: .IP "\fBk6\fR" 4
yading@10: .IX Item "k6"
yading@10: .IP "\fBk62\fR" 4
yading@10: .IX Item "k62"
yading@10: .IP "\fBathlon\fR" 4
yading@10: .IX Item "athlon"
yading@10: .IP "\fBathlonxp\fR" 4
yading@10: .IX Item "athlonxp"
yading@10: .IP "\fBk8\fR" 4
yading@10: .IX Item "k8"
yading@10: .RE
yading@10: .RS 4
yading@10: .RE
yading@10: .RE
yading@10: .RS 4
yading@10: .RE
yading@10: .IP "\fB\-opencl_options options (\fR\fIglobal\fR\fB)\fR" 4
yading@10: .IX Item "-opencl_options options (global)"
yading@10: .PD
yading@10: Set OpenCL environment options. This option is only available when
yading@10: FFmpeg has been compiled with \f(CW\*(C`\-\-enable\-opencl\*(C'\fR.
yading@10: .Sp
yading@10: \&\fIoptions\fR must be a list of \fIkey\fR=\fIvalue\fR option pairs
yading@10: separated by ':'. See the ``OpenCL Options'' section in the
yading@10: ffmpeg-utils manual for the list of supported options.
yading@10: .SS "AVOptions"
yading@10: .IX Subsection "AVOptions"
yading@10: These options are provided directly by the libavformat, libavdevice and
yading@10: libavcodec libraries. To see the list of available AVOptions, use the
yading@10: \&\fB\-help\fR option. They are separated into two categories:
yading@10: .IP "\fBgeneric\fR" 4
yading@10: .IX Item "generic"
yading@10: These options can be set for any container, codec or device. Generic options
yading@10: are listed under AVFormatContext options for containers/devices and under
yading@10: AVCodecContext options for codecs.
yading@10: .IP "\fBprivate\fR" 4
yading@10: .IX Item "private"
yading@10: These options are specific to the given container, device or codec. Private
yading@10: options are listed under their corresponding containers/devices/codecs.
yading@10: .PP
yading@10: For example to write an ID3v2.3 header instead of a default ID3v2.4 to
yading@10: an \s-1MP3\s0 file, use the \fBid3v2_version\fR private option of the \s-1MP3\s0
yading@10: muxer:
yading@10: .PP
yading@10: .Vb 1
yading@10: \&        ffmpeg \-i input.flac \-id3v2_version 3 out.mp3
yading@10: .Ve
yading@10: .PP
yading@10: All codec AVOptions are obviously per-stream, so the chapter on stream
yading@10: specifiers applies to them
yading@10: .PP
yading@10: Note \fB\-nooption\fR syntax cannot be used for boolean AVOptions,
yading@10: use \fB\-option 0\fR/\fB\-option 1\fR.
yading@10: .PP
yading@10: Note2 old undocumented way of specifying per-stream AVOptions by prepending
yading@10: v/a/s to the options name is now obsolete and will be removed soon.
yading@10: .SS "Main options"
yading@10: .IX Subsection "Main options"
yading@10: .IP "\fB\-f\fR \fIformat\fR" 4
yading@10: .IX Item "-f format"
yading@10: Force format to use.
yading@10: .IP "\fB\-unit\fR" 4
yading@10: .IX Item "-unit"
yading@10: Show the unit of the displayed values.
yading@10: .IP "\fB\-prefix\fR" 4
yading@10: .IX Item "-prefix"
yading@10: Use \s-1SI\s0 prefixes for the displayed values.
yading@10: Unless the \*(L"\-byte_binary_prefix\*(R" option is used all the prefixes
yading@10: are decimal.
yading@10: .IP "\fB\-byte_binary_prefix\fR" 4
yading@10: .IX Item "-byte_binary_prefix"
yading@10: Force the use of binary prefixes for byte values.
yading@10: .IP "\fB\-sexagesimal\fR" 4
yading@10: .IX Item "-sexagesimal"
yading@10: Use sexagesimal format \s-1HH:MM:SS\s0.MICROSECONDS for time values.
yading@10: .IP "\fB\-pretty\fR" 4
yading@10: .IX Item "-pretty"
yading@10: Prettify the format of the displayed values, it corresponds to the
yading@10: options \*(L"\-unit \-prefix \-byte_binary_prefix \-sexagesimal\*(R".
yading@10: .IP "\fB\-of, \-print_format\fR \fIwriter_name\fR\fB[=\fR\fIwriter_options\fR\fB]\fR" 4
yading@10: .IX Item "-of, -print_format writer_name[=writer_options]"
yading@10: Set the output printing format.
yading@10: .Sp
yading@10: \&\fIwriter_name\fR specifies the name of the writer, and
yading@10: \&\fIwriter_options\fR specifies the options to be passed to the writer.
yading@10: .Sp
yading@10: For example for printing the output in \s-1JSON\s0 format, specify:
yading@10: .Sp
yading@10: .Vb 1
yading@10: \&        \-print_format json
yading@10: .Ve
yading@10: .Sp
yading@10: For more details on the available output printing formats, see the
yading@10: Writers section below.
yading@10: .IP "\fB\-sections\fR" 4
yading@10: .IX Item "-sections"
yading@10: Print sections structure and section information, and exit. The output
yading@10: is not meant to be parsed by a machine.
yading@10: .IP "\fB\-select_streams\fR \fIstream_specifier\fR" 4
yading@10: .IX Item "-select_streams stream_specifier"
yading@10: Select only the streams specified by \fIstream_specifier\fR. This
yading@10: option affects only the options related to streams
yading@10: (e.g. \f(CW\*(C`show_streams\*(C'\fR, \f(CW\*(C`show_packets\*(C'\fR, etc.).
yading@10: .Sp
yading@10: For example to show only audio streams, you can use the command:
yading@10: .Sp
yading@10: .Vb 1
yading@10: \&        ffprobe \-show_streams \-select_streams a INPUT
yading@10: .Ve
yading@10: .Sp
yading@10: To show only video packets belonging to the video stream with index 1:
yading@10: .Sp
yading@10: .Vb 1
yading@10: \&        ffprobe \-show_packets \-select_streams v:1 INPUT
yading@10: .Ve
yading@10: .IP "\fB\-show_data\fR" 4
yading@10: .IX Item "-show_data"
yading@10: Show payload data, as an hexadecimal and \s-1ASCII\s0 dump. Coupled with
yading@10: \&\fB\-show_packets\fR, it will dump the packets' data. Coupled with
yading@10: \&\fB\-show_streams\fR, it will dump the codec extradata.
yading@10: .Sp
yading@10: The dump is printed as the \*(L"data\*(R" field. It may contain newlines.
yading@10: .IP "\fB\-show_error\fR" 4
yading@10: .IX Item "-show_error"
yading@10: Show information about the error found when trying to probe the input.
yading@10: .Sp
yading@10: The error information is printed within a section with name \*(L"\s-1ERROR\s0\*(R".
yading@10: .IP "\fB\-show_format\fR" 4
yading@10: .IX Item "-show_format"
yading@10: Show information about the container format of the input multimedia
yading@10: stream.
yading@10: .Sp
yading@10: All the container format information is printed within a section with
yading@10: name \*(L"\s-1FORMAT\s0\*(R".
yading@10: .IP "\fB\-show_format_entry\fR \fIname\fR" 4
yading@10: .IX Item "-show_format_entry name"
yading@10: Like \fB\-show_format\fR, but only prints the specified entry of the
yading@10: container format information, rather than all. This option may be given more
yading@10: than once, then all specified entries will be shown.
yading@10: .Sp
yading@10: This option is deprecated, use \f(CW\*(C`show_entries\*(C'\fR instead.
yading@10: .IP "\fB\-show_entries\fR \fIsection_entries\fR" 4
yading@10: .IX Item "-show_entries section_entries"
yading@10: Set list of entries to show.
yading@10: .Sp
yading@10: Entries are specified according to the following
yading@10: syntax. \fIsection_entries\fR contains a list of section entries
yading@10: separated by \f(CW\*(C`:\*(C'\fR. Each section entry is composed by a section
yading@10: name (or unique name), optionally followed by a list of entries local
yading@10: to that section, separated by \f(CW\*(C`,\*(C'\fR.
yading@10: .Sp
yading@10: If section name is specified but is followed by no \f(CW\*(C`=\*(C'\fR, all
yading@10: entries are printed to output, together with all the contained
yading@10: sections. Otherwise only the entries specified in the local section
yading@10: entries list are printed. In particular, if \f(CW\*(C`=\*(C'\fR is specified but
yading@10: the list of local entries is empty, then no entries will be shown for
yading@10: that section.
yading@10: .Sp
yading@10: Note that the order of specification of the local section entries is
yading@10: not honored in the output, and the usual display order will be
yading@10: retained.
yading@10: .Sp
yading@10: The formal syntax is given by:
yading@10: .Sp
yading@10: .Vb 3
yading@10: \&        <LOCAL_SECTION_ENTRIES> ::= <SECTION_ENTRY_NAME>[,<LOCAL_SECTION_ENTRIES>]
yading@10: \&        <SECTION_ENTRY>         ::= <SECTION_NAME>[=[<LOCAL_SECTION_ENTRIES>]]
yading@10: \&        <SECTION_ENTRIES>       ::= <SECTION_ENTRY>[:<SECTION_ENTRIES>]
yading@10: .Ve
yading@10: .Sp
yading@10: For example, to show only the index and type of each stream, and the \s-1PTS\s0
yading@10: time, duration time, and stream index of the packets, you can specify
yading@10: the argument:
yading@10: .Sp
yading@10: .Vb 1
yading@10: \&        packet=pts_time,duration_time,stream_index : stream=index,codec_type
yading@10: .Ve
yading@10: .Sp
yading@10: To show all the entries in the section \*(L"format\*(R", but only the codec
yading@10: type in the section \*(L"stream\*(R", specify the argument:
yading@10: .Sp
yading@10: .Vb 1
yading@10: \&        format : stream=codec_type
yading@10: .Ve
yading@10: .Sp
yading@10: To show all the tags in the stream and format sections:
yading@10: .Sp
yading@10: .Vb 1
yading@10: \&        format_tags : format_tags
yading@10: .Ve
yading@10: .Sp
yading@10: To show only the \f(CW\*(C`title\*(C'\fR tag (if available) in the stream
yading@10: sections:
yading@10: .Sp
yading@10: .Vb 1
yading@10: \&        stream_tags=title
yading@10: .Ve
yading@10: .IP "\fB\-show_packets\fR" 4
yading@10: .IX Item "-show_packets"
yading@10: Show information about each packet contained in the input multimedia
yading@10: stream.
yading@10: .Sp
yading@10: The information for each single packet is printed within a dedicated
yading@10: section with name \*(L"\s-1PACKET\s0\*(R".
yading@10: .IP "\fB\-show_frames\fR" 4
yading@10: .IX Item "-show_frames"
yading@10: Show information about each frame contained in the input multimedia
yading@10: stream.
yading@10: .Sp
yading@10: The information for each single frame is printed within a dedicated
yading@10: section with name \*(L"\s-1FRAME\s0\*(R".
yading@10: .IP "\fB\-show_streams\fR" 4
yading@10: .IX Item "-show_streams"
yading@10: Show information about each media stream contained in the input
yading@10: multimedia stream.
yading@10: .Sp
yading@10: Each media stream information is printed within a dedicated section
yading@10: with name \*(L"\s-1STREAM\s0\*(R".
yading@10: .IP "\fB\-count_frames\fR" 4
yading@10: .IX Item "-count_frames"
yading@10: Count the number of frames per stream and report it in the
yading@10: corresponding stream section.
yading@10: .IP "\fB\-count_packets\fR" 4
yading@10: .IX Item "-count_packets"
yading@10: Count the number of packets per stream and report it in the
yading@10: corresponding stream section.
yading@10: .IP "\fB\-show_private_data, \-private\fR" 4
yading@10: .IX Item "-show_private_data, -private"
yading@10: Show private data, that is data depending on the format of the
yading@10: particular shown element.
yading@10: This option is enabled by default, but you may need to disable it
yading@10: for specific uses, for example when creating XSD-compliant \s-1XML\s0 output.
yading@10: .IP "\fB\-show_program_version\fR" 4
yading@10: .IX Item "-show_program_version"
yading@10: Show information related to program version.
yading@10: .Sp
yading@10: Version information is printed within a section with name
yading@10: \&\*(L"\s-1PROGRAM_VERSION\s0\*(R".
yading@10: .IP "\fB\-show_library_versions\fR" 4
yading@10: .IX Item "-show_library_versions"
yading@10: Show information related to library versions.
yading@10: .Sp
yading@10: Version information for each library is printed within a section with
yading@10: name \*(L"\s-1LIBRARY_VERSION\s0\*(R".
yading@10: .IP "\fB\-show_versions\fR" 4
yading@10: .IX Item "-show_versions"
yading@10: Show information related to program and library versions. This is the
yading@10: equivalent of setting both \fB\-show_program_version\fR and
yading@10: \&\fB\-show_library_versions\fR options.
yading@10: .IP "\fB\-bitexact\fR" 4
yading@10: .IX Item "-bitexact"
yading@10: Force bitexact output, useful to produce output which is not dependent
yading@10: on the specific build.
yading@10: .IP "\fB\-i\fR \fIinput_file\fR" 4
yading@10: .IX Item "-i input_file"
yading@10: Read \fIinput_file\fR.
yading@10: .SH "WRITERS"
yading@10: .IX Header "WRITERS"
yading@10: A writer defines the output format adopted by \fBffprobe\fR, and will be
yading@10: used for printing all the parts of the output.
yading@10: .PP
yading@10: A writer may accept one or more arguments, which specify the options
yading@10: to adopt. The options are specified as a list of \fIkey\fR=\fIvalue\fR
yading@10: pairs, separated by \*(L":\*(R".
yading@10: .PP
yading@10: A description of the currently available writers follows.
yading@10: .SS "default"
yading@10: .IX Subsection "default"
yading@10: Default format.
yading@10: .PP
yading@10: Print each section in the form:
yading@10: .PP
yading@10: .Vb 5
yading@10: \&        [SECTION]
yading@10: \&        key1=val1
yading@10: \&        ...
yading@10: \&        keyN=valN
yading@10: \&        [/SECTION]
yading@10: .Ve
yading@10: .PP
yading@10: Metadata tags are printed as a line in the corresponding \s-1FORMAT\s0 or
yading@10: \&\s-1STREAM\s0 section, and are prefixed by the string \*(L"\s-1TAG:\s0\*(R".
yading@10: .PP
yading@10: A description of the accepted options follows.
yading@10: .IP "\fBnokey, nk\fR" 4
yading@10: .IX Item "nokey, nk"
yading@10: If set to 1 specify not to print the key of each field. Default value
yading@10: is 0.
yading@10: .IP "\fBnoprint_wrappers, nw\fR" 4
yading@10: .IX Item "noprint_wrappers, nw"
yading@10: If set to 1 specify not to print the section header and footer.
yading@10: Default value is 0.
yading@10: .SS "compact, csv"
yading@10: .IX Subsection "compact, csv"
yading@10: Compact and \s-1CSV\s0 format.
yading@10: .PP
yading@10: The \f(CW\*(C`csv\*(C'\fR writer is equivalent to \f(CW\*(C`compact\*(C'\fR, but supports
yading@10: different defaults.
yading@10: .PP
yading@10: Each section is printed on a single line.
yading@10: If no option is specifid, the output has the form:
yading@10: .PP
yading@10: .Vb 1
yading@10: \&        section|key1=val1| ... |keyN=valN
yading@10: .Ve
yading@10: .PP
yading@10: Metadata tags are printed in the corresponding \*(L"format\*(R" or \*(L"stream\*(R"
yading@10: section. A metadata tag key, if printed, is prefixed by the string
yading@10: \&\*(L"tag:\*(R".
yading@10: .PP
yading@10: The description of the accepted options follows.
yading@10: .IP "\fBitem_sep, s\fR" 4
yading@10: .IX Item "item_sep, s"
yading@10: Specify the character to use for separating fields in the output line.
yading@10: It must be a single printable character, it is \*(L"|\*(R" by default (\*(L",\*(R" for
yading@10: the \f(CW\*(C`csv\*(C'\fR writer).
yading@10: .IP "\fBnokey, nk\fR" 4
yading@10: .IX Item "nokey, nk"
yading@10: If set to 1 specify not to print the key of each field. Its default
yading@10: value is 0 (1 for the \f(CW\*(C`csv\*(C'\fR writer).
yading@10: .IP "\fBescape, e\fR" 4
yading@10: .IX Item "escape, e"
yading@10: Set the escape mode to use, default to \*(L"c\*(R" (\*(L"csv\*(R" for the \f(CW\*(C`csv\*(C'\fR
yading@10: writer).
yading@10: .Sp
yading@10: It can assume one of the following values:
yading@10: .RS 4
yading@10: .IP "\fBc\fR" 4
yading@10: .IX Item "c"
yading@10: Perform C\-like escaping. Strings containing a newline ('\en'), carriage
yading@10: return ('\er'), a tab ('\et'), a form feed ('\ef'), the escaping
yading@10: character ('\e') or the item separator character \fI\s-1SEP\s0\fR are escaped using C\-like fashioned
yading@10: escaping, so that a newline is converted to the sequence \*(L"\en\*(R", a
yading@10: carriage return to \*(L"\er\*(R", '\e' to \*(L"\e\e\*(R" and the separator \fI\s-1SEP\s0\fR is
yading@10: converted to "\e\fI\s-1SEP\s0\fR".
yading@10: .IP "\fBcsv\fR" 4
yading@10: .IX Item "csv"
yading@10: Perform CSV-like escaping, as described in \s-1RFC4180\s0.  Strings
yading@10: containing a newline ('\en'), a carriage return ('\er'), a double quote
yading@10: ('"'), or \fI\s-1SEP\s0\fR are enclosed in double-quotes.
yading@10: .IP "\fBnone\fR" 4
yading@10: .IX Item "none"
yading@10: Perform no escaping.
yading@10: .RE
yading@10: .RS 4
yading@10: .RE
yading@10: .IP "\fBprint_section, p\fR" 4
yading@10: .IX Item "print_section, p"
yading@10: Print the section name at the begin of each line if the value is
yading@10: \&\f(CW1\fR, disable it with value set to \f(CW0\fR. Default value is
yading@10: \&\f(CW1\fR.
yading@10: .SS "flat"
yading@10: .IX Subsection "flat"
yading@10: Flat format.
yading@10: .PP
yading@10: A free-form output where each line contains an explicit key=value, such as
yading@10: \&\*(L"streams.stream.3.tags.foo=bar\*(R". The output is shell escaped, so it can be
yading@10: directly embedded in sh scripts as long as the separator character is an
yading@10: alphanumeric character or an underscore (see \fIsep_char\fR option).
yading@10: .PP
yading@10: The description of the accepted options follows.
yading@10: .IP "\fBsep_char, s\fR" 4
yading@10: .IX Item "sep_char, s"
yading@10: Separator character used to separate the chapter, the section name, IDs and
yading@10: potential tags in the printed field key.
yading@10: .Sp
yading@10: Default value is '.'.
yading@10: .IP "\fBhierarchical, h\fR" 4
yading@10: .IX Item "hierarchical, h"
yading@10: Specify if the section name specification should be hierarchical. If
yading@10: set to 1, and if there is more than one section in the current
yading@10: chapter, the section name will be prefixed by the name of the
yading@10: chapter. A value of 0 will disable this behavior.
yading@10: .Sp
yading@10: Default value is 1.
yading@10: .SS "ini"
yading@10: .IX Subsection "ini"
yading@10: \&\s-1INI\s0 format output.
yading@10: .PP
yading@10: Print output in an \s-1INI\s0 based format.
yading@10: .PP
yading@10: The following conventions are adopted:
yading@10: .IP "\(bu" 4
yading@10: all key and values are \s-1UTF\-8\s0
yading@10: .IP "\(bu" 4
yading@10: \&'.' is the subgroup separator
yading@10: .IP "\(bu" 4
yading@10: newline, '\et', '\ef', '\eb' and the following characters are escaped
yading@10: .IP "\(bu" 4
yading@10: \&'\e' is the escape character
yading@10: .IP "\(bu" 4
yading@10: \&'#' is the comment indicator
yading@10: .IP "\(bu" 4
yading@10: \&'=' is the key/value separator
yading@10: .IP "\(bu" 4
yading@10: \&':' is not used but usually parsed as key/value separator
yading@10: .PP
yading@10: This writer accepts options as a list of \fIkey\fR=\fIvalue\fR pairs,
yading@10: separated by \*(L":\*(R".
yading@10: .PP
yading@10: The description of the accepted options follows.
yading@10: .IP "\fBhierarchical, h\fR" 4
yading@10: .IX Item "hierarchical, h"
yading@10: Specify if the section name specification should be hierarchical. If
yading@10: set to 1, and if there is more than one section in the current
yading@10: chapter, the section name will be prefixed by the name of the
yading@10: chapter. A value of 0 will disable this behavior.
yading@10: .Sp
yading@10: Default value is 1.
yading@10: .SS "json"
yading@10: .IX Subsection "json"
yading@10: \&\s-1JSON\s0 based format.
yading@10: .PP
yading@10: Each section is printed using \s-1JSON\s0 notation.
yading@10: .PP
yading@10: The description of the accepted options follows.
yading@10: .IP "\fBcompact, c\fR" 4
yading@10: .IX Item "compact, c"
yading@10: If set to 1 enable compact output, that is each section will be
yading@10: printed on a single line. Default value is 0.
yading@10: .PP
yading@10: For more information about \s-1JSON\s0, see <\fBhttp://www.json.org/\fR>.
yading@10: .SS "xml"
yading@10: .IX Subsection "xml"
yading@10: \&\s-1XML\s0 based format.
yading@10: .PP
yading@10: The \s-1XML\s0 output is described in the \s-1XML\s0 schema description file
yading@10: \&\fIffprobe.xsd\fR installed in the FFmpeg datadir.
yading@10: .PP
yading@10: An updated version of the schema can be retrieved at the url
yading@10: <\fBhttp://www.ffmpeg.org/schema/ffprobe.xsd\fR>, which redirects to the
yading@10: latest schema committed into the FFmpeg development source code tree.
yading@10: .PP
yading@10: Note that the output issued will be compliant to the
yading@10: \&\fIffprobe.xsd\fR schema only when no special global output options
yading@10: (\fBunit\fR, \fBprefix\fR, \fBbyte_binary_prefix\fR,
yading@10: \&\fBsexagesimal\fR etc.) are specified.
yading@10: .PP
yading@10: The description of the accepted options follows.
yading@10: .IP "\fBfully_qualified, q\fR" 4
yading@10: .IX Item "fully_qualified, q"
yading@10: If set to 1 specify if the output should be fully qualified. Default
yading@10: value is 0.
yading@10: This is required for generating an \s-1XML\s0 file which can be validated
yading@10: through an \s-1XSD\s0 file.
yading@10: .IP "\fBxsd_compliant, x\fR" 4
yading@10: .IX Item "xsd_compliant, x"
yading@10: If set to 1 perform more checks for ensuring that the output is \s-1XSD\s0
yading@10: compliant. Default value is 0.
yading@10: This option automatically sets \fBfully_qualified\fR to 1.
yading@10: .PP
yading@10: For more information about the \s-1XML\s0 format, see
yading@10: <\fBhttp://www.w3.org/XML/\fR>.
yading@10: .SH "TIMECODE"
yading@10: .IX Header "TIMECODE"
yading@10: \&\fBffprobe\fR supports Timecode extraction:
yading@10: .IP "\(bu" 4
yading@10: \&\s-1MPEG1/2\s0 timecode is extracted from the \s-1GOP\s0, and is available in the video
yading@10: stream details (\fB\-show_streams\fR, see \fItimecode\fR).
yading@10: .IP "\(bu" 4
yading@10: \&\s-1MOV\s0 timecode is extracted from tmcd track, so is available in the tmcd
yading@10: stream metadata (\fB\-show_streams\fR, see \fITAG:timecode\fR).
yading@10: .IP "\(bu" 4
yading@10: \&\s-1DV\s0, \s-1GXF\s0 and \s-1AVI\s0 timecodes are available in format metadata
yading@10: (\fB\-show_format\fR, see \fITAG:timecode\fR).
yading@10: .SH "SEE ALSO"
yading@10: .IX Header "SEE ALSO"
yading@10: \&\fIffprobe\-all\fR\|(1),
yading@10: \&\fIffmpeg\fR\|(1), \fIffplay\fR\|(1), \fIffserver\fR\|(1),
yading@10: \&\fIffmpeg\-utils\fR\|(1), \fIffmpeg\-scaler\fR\|(1), \fIffmpeg\-resampler\fR\|(1),
yading@10: \&\fIffmpeg\-codecs\fR\|(1), \fIffmpeg\-bitstream\-filters\fR\|(1), \fIffmpeg\-formats\fR\|(1),
yading@10: \&\fIffmpeg\-devices\fR\|(1), \fIffmpeg\-protocols\fR\|(1), \fIffmpeg\-filters\fR\|(1)
yading@10: .SH "AUTHORS"
yading@10: .IX Header "AUTHORS"
yading@10: The FFmpeg developers.
yading@10: .PP
yading@10: For details about the authorship, see the Git history of the project
yading@10: (git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
yading@10: \&\fBgit log\fR in the FFmpeg source directory, or browsing the
yading@10: online repository at <\fBhttp://source.ffmpeg.org\fR>.
yading@10: .PP
yading@10: Maintainers for the specific components are listed in the file
yading@10: \&\fI\s-1MAINTAINERS\s0\fR in the source code tree.