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https://gitee.com/openharmony/third_party_ffmpeg
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135 lines
3.0 KiB
Plaintext
135 lines
3.0 KiB
Plaintext
\input texinfo @c -*- texinfo -*-
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@settitle avprobe Documentation
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@titlepage
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@center @titlefont{avprobe Documentation}
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@end titlepage
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@top
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@contents
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@chapter Synopsis
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The generic syntax is:
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@example
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@c man begin SYNOPSIS
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avprobe [options] [@file{input_file}]
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@c man end
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@end example
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@chapter Description
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@c man begin DESCRIPTION
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avprobe gathers information from multimedia streams and prints it in
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human- and machine-readable fashion.
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For example it can be used to check the format of the container used
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by a multimedia stream and the format and type of each media stream
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contained in it.
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If a filename is specified in input, avprobe will try to open and
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probe the file content. If the file cannot be opened or recognized as
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a multimedia file, a positive exit code is returned.
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avprobe may be employed both as a standalone application or in
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combination with a textual filter, which may perform more
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sophisticated processing, e.g. statistical processing or plotting.
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Options are used to list some of the formats supported by avprobe or
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for specifying which information to display, and for setting how
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avprobe will show it.
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avprobe output is designed to be easily parsable by a textual filter,
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and consists of one or more sections of the form:
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@example
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[SECTION]
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key1=val1
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...
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keyN=valN
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[/SECTION]
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@end example
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Metadata tags stored in the container or in the streams are recognized
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and printed in the corresponding "FORMAT" or "STREAM" section, and
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are prefixed by the string "TAG:".
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@c man end
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@chapter Options
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@c man begin OPTIONS
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@include avtools-common-opts.texi
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@section Main options
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@table @option
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@item -f @var{format}
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Force format to use.
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@item -unit
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Show the unit of the displayed values.
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@item -prefix
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Use SI prefixes for the displayed values.
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Unless the "-byte_binary_prefix" option is used all the prefixes
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are decimal.
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@item -byte_binary_prefix
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Force the use of binary prefixes for byte values.
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@item -sexagesimal
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Use sexagesimal format HH:MM:SS.MICROSECONDS for time values.
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@item -pretty
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Prettify the format of the displayed values, it corresponds to the
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options "-unit -prefix -byte_binary_prefix -sexagesimal".
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@item -show_format
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Show information about the container format of the input multimedia
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stream.
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All the container format information is printed within a section with
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name "FORMAT".
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@item -show_packets
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Show information about each packet contained in the input multimedia
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stream.
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The information for each single packet is printed within a dedicated
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section with name "PACKET".
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@item -show_streams
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Show information about each media stream contained in the input
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multimedia stream.
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Each media stream information is printed within a dedicated section
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with name "STREAM".
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@end table
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@c man end
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@include demuxers.texi
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@include muxers.texi
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@include protocols.texi
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@include indevs.texi
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@ignore
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@setfilename avprobe
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@settitle avprobe media prober
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@c man begin SEEALSO
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avconv(1), avplay(1) and the Libav HTML documentation
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@c man end
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@c man begin AUTHORS
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The Libav developers
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@c man end
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@end ignore
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@bye
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