Remove avconv

All features have been merged into ffmpeg.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 0 insertions, 1063 deletions

diff --git a/doc/avconv.texi b/doc/avconv.texi
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-\input texinfo @c -*- texinfo -*-
-
-@settitle avconv Documentation
-@titlepage
-@center @titlefont{avconv Documentation}
-@end titlepage
-
-@top
-
-@contents
-
-@chapter Synopsis
-
-The generic syntax is:
-
-@example
-@c man begin SYNOPSIS
-avconv [global options] [[infile options][@option{-i} @var{infile}]]... @{[outfile options] @var{outfile}@}...
-@c man end
-@end example
-
-@chapter Description
-@c man begin DESCRIPTION
-
-avconv is a very fast video and audio converter that can also grab from
-a live audio/video source. It can also convert between arbitrary sample
-rates and resize video on the fly with a high quality polyphase filter.
-
-avconv reads from an arbitrary number of input "files" (which can be regular
-files, pipes, network streams, grabbing devices, etc.), specified by the
-@code{-i} option, and writes to an arbitrary number of output "files", which are
-specified by a plain output filename. Anything found on the command line which
-cannot be interpreted as an option is considered to be an output filename.
-
-Each input or output file can in principle contain any number of streams of
-different types (video/audio/subtitle/attachment/data). Allowed number and/or
-types of streams can be limited by the container format. Selecting, which
-streams from which inputs go into output, is done either automatically or with
-the @code{-map} option (see the Stream selection chapter).
-
-To refer to input files in options, you must use their indices (0-based). E.g.
-the first input file is @code{0}, the second is @code{1} etc. Similarly, streams
-within a file are referred to by their indices. E.g. @code{2:3} refers to the
-fourth stream in the third input file. See also the Stream specifiers chapter.
-
-As a general rule, options are applied to the next specified
-file. Therefore, order is important, and you can have the same
-option on the command line multiple times. Each occurrence is
-then applied to the next input or output file.
-Exceptions from this rule are the global options (e.g. verbosity level),
-which should be specified first.
-
-Do not mix input and output files -- first specify all input files, then all
-output files. Also do not mix options which belong to different files. All
-options apply ONLY to the next input or output file and are reset between files.
-
-@itemize
-@item
-To set the video bitrate of the output file to 64kbit/s:
-@example
-avconv -i input.avi -b 64k output.avi
-@end example
-
-@item
-To force the frame rate of the output file to 24 fps:
-@example
-avconv -i input.avi -r 24 output.avi
-@end example
-
-@item
-To force the frame rate of the input file (valid for raw formats only)
-to 1 fps and the frame rate of the output file to 24 fps:
-@example
-avconv -r 1 -i input.m2v -r 24 output.avi
-@end example
-@end itemize
-
-The format option may be needed for raw input files.
-
-@c man end DESCRIPTION
-
-@chapter Stream selection
-@c man begin STREAM SELECTION
-
-By default avconv tries to pick the "best" stream of each type present in input
-files and add them to each output file. For video, this means the highest
-resolution, for audio the highest channel count. For subtitle it's simply the
-first subtitle stream.
-
-You can disable some of those defaults by using @code{-vn/-an/-sn} options. For
-full manual control, use the @code{-map} option, which disables the defaults just
-described.
-
-@c man end STREAM SELECTION
-
-@chapter Options
-@c man begin OPTIONS
-
-@include avtools-common-opts.texi
-
-@section Main options
-
-@table @option
-
-@item -f @var{fmt} (@emph{input/output})
-Force input or output file format. The format is normally autodetected for input
-files and guessed from file extension for output files, so this option is not
-needed in most cases.
-
-@item -i @var{filename} (@emph{input})
-input file name
-
-@item -y (@emph{global})
-Overwrite output files without asking.
-
-@item -n (@emph{global})
-Do not overwrite output files but exit if file exists.
-
-@item -c[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream})
-@itemx -codec[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream})
-Select an encoder (when used before an output file) or a decoder (when used
-before an input file) for one or more streams. @var{codec} is the name of a
-decoder/encoder or a special value @code{copy} (output only) to indicate that
-the stream is not to be reencoded.
-
-For example
-@example
-avconv -i INPUT -map 0 -c:v libx264 -c:a copy OUTPUT
-@end example
-encodes all video streams with libx264 and copies all audio streams.
-
-For each stream, the last matching @code{c} option is applied, so
-@example
-avconv -i INPUT -map 0 -c copy -c:v:1 libx264 -c:a:137 libvorbis OUTPUT
-@end example
-will copy all the streams except the second video, which will be encoded with
-libx264, and the 138th audio, which will be encoded with libvorbis.
-
-@item -t @var{duration} (@emph{output})
-Stop writing the output after its duration reaches @var{duration}.
-@var{duration} may be a number in seconds, or in @code{hh:mm:ss[.xxx]} form.
-
-@item -fs @var{limit_size} (@emph{output})
-Set the file size limit.
-
-@item -ss @var{position} (@emph{input/output})
-When used as an input option (before @code{-i}), seeks in this input file to
-@var{position}. When used as an output option (before an output filename),
-decodes but discards input until the timestamps reach @var{position}. This is
-slower, but more accurate.
-
-@var{position} may be either in seconds or in @code{hh:mm:ss[.xxx]} form.
-
-@item -itsoffset @var{offset} (@emph{input})
-Set the input time offset in seconds.
-@code{[-]hh:mm:ss[.xxx]} syntax is also supported.
-The offset is added to the timestamps of the input files.
-Specifying a positive offset means that the corresponding
-streams are delayed by @var{offset} seconds.
-
-@item -metadata[:metadata_specifier] @var{key}=@var{value} (@emph{output,per-metadata})
-Set a metadata key/value pair.
-
-An optional @var{metadata_specifier} may be given to set metadata
-on streams or chapters. See @code{-map_metadata} documentation for
-details.
-
-This option overrides metadata set with @code{-map_metadata}. It is
-also possible to delete metadata by using an empty value.
-
-For example, for setting the title in the output file:
-@example
-avconv -i in.avi -metadata title="my title" out.flv
-@end example
-
-To set the language of the first audio stream:
-@example
-avconv -i INPUT -metadata:s:a:0 language=eng OUTPUT
-@end example
-
-@item -target @var{type} (@emph{output})
-Specify target file type (@code{vcd}, @code{svcd}, @code{dvd}, @code{dv},
-@code{dv50}). @var{type} may be prefixed with @code{pal-}, @code{ntsc-} or
-@code{film-} to use the corresponding standard. All the format options
-(bitrate, codecs, buffer sizes) are then set automatically. You can just type:
-
-@example
-avconv -i myfile.avi -target vcd /tmp/vcd.mpg
-@end example
-
-Nevertheless you can specify additional options as long as you know
-they do not conflict with the standard, as in:
-
-@example
-avconv -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg
-@end example
-
-@item -dframes @var{number} (@emph{output})
-Set the number of data frames to record. This is an alias for @code{-frames:d}.
-
-@item -frames[:@var{stream_specifier}] @var{framecount} (@emph{output,per-stream})
-Stop writing to the stream after @var{framecount} frames.
-
-@item -q[:@var{stream_specifier}] @var{q} (@emph{output,per-stream})
-@itemx -qscale[:@var{stream_specifier}] @var{q} (@emph{output,per-stream})
-Use fixed quality scale (VBR). The meaning of @var{q} is
-codec-dependent.
-
-@item -filter[:@var{stream_specifier}] @var{filter_graph} (@emph{output,per-stream})
-@var{filter_graph} is a description of the filter graph to apply to
-the stream. Use @code{-filters} to show all the available filters
-(including also sources and sinks).
-@item -pre[:@var{stream_specifier}] @var{preset_name} (@emph{output,per-stream})
-Specify the preset for matching stream(s).
-
-@item -stats (@emph{global})
-Print encoding progress/statistics. On by default.
-
-@item -attach @var{filename} (@emph{output})
-Add an attachment to the output file. This is supported by a few formats
-like Matroska for e.g. fonts used in rendering subtitles. Attachments
-are implemented as a specific type of stream, so this option will add
-a new stream to the file. It is then possible to use per-stream options
-on this stream in the usual way. Attachment streams created with this
-option will be created after all the other streams (i.e. those created
-with @code{-map} or automatic mappings).
-
-Note that for Matroska you also have to set the mimetype metadata tag:
-@example
-avconv -i INPUT -attach DejaVuSans.ttf -metadata:s:2 mimetype=application/x-truetype-font out.mkv
-@end example
-(assuming that the attachment stream will be third in the output file).
-
-@item -dump_attachment[:@var{stream_specifier}] @var{filename} (@emph{input,per-stream})
-Extract the matching attachment stream into a file named @var{filename}. If
-@var{filename} is empty, then the value of the @code{filename} metadata tag
-will be used.
-
-E.g. to extract the first attachment to a file named 'out.ttf':
-@example
-avconv -dump_attachment:t:0 out.ttf INPUT
-@end example
-To extract all attachments to files determined by the @code{filename} tag:
-@example
-avconv -dump_attachment:t "" INPUT
-@end example
-
-Technical note -- attachments are implemented as codec extradata, so this
-option can actually be used to extract extradata from any stream, not just
-attachments.
-
-@end table
-
-@section Video Options
-
-@table @option
-@item -vframes @var{number} (@emph{output})
-Set the number of video frames to record. This is an alias for @code{-frames:v}.
-@item -r[:@var{stream_specifier}] @var{fps} (@emph{input/output,per-stream})
-Set frame rate (Hz value, fraction or abbreviation), (default = 25).
-@item -s[:@var{stream_specifier}] @var{size} (@emph{input/output,per-stream})
-Set frame size. The format is @samp{wxh} (default - same as source).
-The following abbreviations are recognized:
-@table @samp
-@item sqcif
-128x96
-@item qcif
-176x144
-@item cif
-352x288
-@item 4cif
-704x576
-@item 16cif
-1408x1152
-@item qqvga
-160x120
-@item qvga
-320x240
-@item vga
-640x480
-@item svga
-800x600
-@item xga
-1024x768
-@item uxga
-1600x1200
-@item qxga
-2048x1536
-@item sxga
-1280x1024
-@item qsxga
-2560x2048
-@item hsxga
-5120x4096
-@item wvga
-852x480
-@item wxga
-1366x768
-@item wsxga
-1600x1024
-@item wuxga
-1920x1200
-@item woxga
-2560x1600
-@item wqsxga
-3200x2048
-@item wquxga
-3840x2400
-@item whsxga
-6400x4096
-@item whuxga
-7680x4800
-@item cga
-320x200
-@item ega
-640x350
-@item hd480
-852x480
-@item hd720
-1280x720
-@item hd1080
-1920x1080
-@end table
-
-@item -aspect[:@var{stream_specifier}] @var{aspect} (@emph{output,per-stream})
-Set the video display aspect ratio specified by @var{aspect}.
-
-@var{aspect} can be a floating point number string, or a string of the
-form @var{num}:@var{den}, where @var{num} and @var{den} are the
-numerator and denominator of the aspect ratio. For example "4:3",
-"16:9", "1.3333", and "1.7777" are valid argument values.
-
-@item -vn (@emph{output})
-Disable video recording.
-@item -bt @var{tolerance}
-Set video bitrate tolerance (in bits, default 4000k).
-Has a minimum value of: (target_bitrate/target_framerate).
-In 1-pass mode, bitrate tolerance specifies how far ratecontrol is
-willing to deviate from the target average bitrate value. This is
-not related to min/max bitrate. Lowering tolerance too much has
-an adverse effect on quality.
-@item -maxrate @var{bitrate}
-Set max video bitrate (in bit/s).
-Requires -bufsize to be set.
-@item -minrate @var{bitrate}
-Set min video bitrate (in bit/s).
-Most useful in setting up a CBR encode:
-@example
-avconv -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v
-@end example
-It is of little use elsewise.
-@item -bufsize @var{size}
-Set video buffer verifier buffer size (in bits).
-@item -vcodec @var{codec} (@emph{output})
-Set the video codec. This is an alias for @code{-codec:v}.
-@item -same_quant
-Use same quantizer as source (implies VBR).
-
-Note that this is NOT SAME QUALITY. Do not use this option unless you know you
-need it.
-
-@item -pass @var{n}
-Select the pass number (1 or 2). It is used to do two-pass
-video encoding. The statistics of the video are recorded in the first
-pass into a log file (see also the option -passlogfile),
-and in the second pass that log file is used to generate the video
-at the exact requested bitrate.
-On pass 1, you may just deactivate audio and set output to null,
-examples for Windows and Unix:
-@example
-avconv -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y NUL
-avconv -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y /dev/null
-@end example
-
-@item -passlogfile @var{prefix} (@emph{global})
-Set two-pass log file name prefix to @var{prefix}, the default file name
-prefix is ``av2pass''. The complete file name will be
-@file{PREFIX-N.log}, where N is a number specific to the output
-stream.
-
-@item -vf @var{filter_graph} (@emph{output})
-@var{filter_graph} is a description of the filter graph to apply to
-the input video.
-Use the option "-filters" to show all the available filters (including
-also sources and sinks).  This is an alias for @code{-filter:v}.
-
-@end table
-
-@section Advanced Video Options
-
-@table @option
-@item -pix_fmt[:@var{stream_specifier}] @var{format} (@emph{input/output,per-stream})
-Set pixel format. Use @code{-pix_fmts} to show all the supported
-pixel formats.
-@item -sws_flags @var{flags} (@emph{input/output})
-Set SwScaler flags.
-@item -g @var{gop_size}
-Set the group of pictures size.
-@item -vdt @var{n}
-Discard threshold.
-@item -qmin @var{q}
-minimum video quantizer scale (VBR)
-@item -qmax @var{q}
-maximum video quantizer scale (VBR)
-@item -qdiff @var{q}
-maximum difference between the quantizer scales (VBR)
-@item -qblur @var{blur}
-video quantizer scale blur (VBR) (range 0.0 - 1.0)
-@item -qcomp @var{compression}
-video quantizer scale compression (VBR) (default 0.5).
-Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
-
-@item -lmin @var{lambda}
-minimum video lagrange factor (VBR)
-@item -lmax @var{lambda}
-max video lagrange factor (VBR)
-@item -mblmin @var{lambda}
-minimum macroblock quantizer scale (VBR)
-@item -mblmax @var{lambda}
-maximum macroblock quantizer scale (VBR)
-
-These four options (lmin, lmax, mblmin, mblmax) use 'lambda' units,
-but you may use the QP2LAMBDA constant to easily convert from 'q' units:
-@example
-avconv -i src.ext -lmax 21*QP2LAMBDA dst.ext
-@end example
-
-@item -rc_init_cplx @var{complexity}
-initial complexity for single pass encoding
-@item -b_qfactor @var{factor}
-qp factor between P- and B-frames
-@item -i_qfactor @var{factor}
-qp factor between P- and I-frames
-@item -b_qoffset @var{offset}
-qp offset between P- and B-frames
-@item -i_qoffset @var{offset}
-qp offset between P- and I-frames
-@item -rc_eq @var{equation}
-Set rate control equation (see section "Expression Evaluation")
-(default = @code{tex^qComp}).
-
-When computing the rate control equation expression, besides the
-standard functions defined in the section "Expression Evaluation", the
-following functions are available:
-@table @var
-@item bits2qp(bits)
-@item qp2bits(qp)
-@end table
-
-and the following constants are available:
-@table @var
-@item iTex
-@item pTex
-@item tex
-@item mv
-@item fCode
-@item iCount
-@item mcVar
-@item var
-@item isI
-@item isP
-@item isB
-@item avgQP
-@item qComp
-@item avgIITex
-@item avgPITex
-@item avgPPTex
-@item avgBPTex
-@item avgTex
-@end table
-
-@item -rc_override[:@var{stream_specifier}] @var{override} (@emph{output,per-stream})
-rate control override for specific intervals
-@item -me_method @var{method}
-Set motion estimation method to @var{method}.
-Available methods are (from lowest to best quality):
-@table @samp
-@item zero
-Try just the (0, 0) vector.
-@item phods
-@item log
-@item x1
-@item hex
-@item umh
-@item epzs
-(default method)
-@item full
-exhaustive search (slow and marginally better than epzs)
-@end table
-
-@item -er @var{n}
-Set error resilience to @var{n}.
-@table @samp
-@item 1
-FF_ER_CAREFUL (default)
-@item 2
-FF_ER_COMPLIANT
-@item 3
-FF_ER_AGGRESSIVE
-@item 4
-FF_ER_VERY_AGGRESSIVE
-@end table
-
-@item -ec @var{bit_mask}
-Set error concealment to @var{bit_mask}. @var{bit_mask} is a bit mask of
-the following values:
-@table @samp
-@item 1
-FF_EC_GUESS_MVS (default = enabled)
-@item 2
-FF_EC_DEBLOCK (default = enabled)
-@end table
-
-@item -bf @var{frames}
-Use 'frames' B-frames (supported for MPEG-1, MPEG-2 and MPEG-4).
-@item -mbd @var{mode}
-macroblock decision
-@table @samp
-@item 0
-FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in avconv).
-@item 1
-FF_MB_DECISION_BITS: Choose the one which needs the fewest bits.
-@item 2
-FF_MB_DECISION_RD: rate distortion
-@end table
-
-@item -bug @var{param}
-Work around encoder bugs that are not auto-detected.
-@item -strict @var{strictness}
-How strictly to follow the standards.
-
-@item -deinterlace
-Deinterlace pictures.
-@item -vstats
-Dump video coding statistics to @file{vstats_HHMMSS.log}.
-@item -vstats_file @var{file}
-Dump video coding statistics to @var{file}.
-@item -top[:@var{stream_specifier}] @var{n} (@emph{output,per-stream})
-top=1/bottom=0/auto=-1 field first
-@item -dc @var{precision}
-Intra_dc_precision.
-@item -vtag @var{fourcc/tag} (@emph{output})
-Force video tag/fourcc. This is an alias for @code{-tag:v}.
-@item -qphist (@emph{global})
-Show QP histogram.
-@item -force_key_frames[:@var{stream_specifier}] @var{time}[,@var{time}...] (@emph{output,per-stream})
-Force key frames at the specified timestamps, more precisely at the first
-frames after each specified time.
-This option can be useful to ensure that a seek point is present at a
-chapter mark or any other designated place in the output file.
-The timestamps must be specified in ascending order.
-
-@item -copyinkf[:@var{stream_specifier}] (@emph{output,per-stream})
-When doing stream copy, copy also non-key frames found at the
-beginning.
-@end table
-
-@section Audio Options
-
-@table @option
-@item -aframes @var{number} (@emph{output})
-Set the number of audio frames to record. This is an alias for @code{-frames:a}.
-@item -ar[:@var{stream_specifier}] @var{freq} (@emph{input/output,per-stream})
-Set the audio sampling frequency. For output streams it is set by
-default to the frequency of the corresponding input stream. For input
-streams this option only makes sense for audio grabbing devices and raw
-demuxers and is mapped to the corresponding demuxer options.
-@item -aq @var{q} (@emph{output})
-Set the audio quality (codec-specific, VBR). This is an alias for -q:a.
-@item -ac[:@var{stream_specifier}] @var{channels} (@emph{input/output,per-stream})
-Set the number of audio channels. For output streams it is set by
-default to the number of input audio channels. For input streams
-this option only makes sense for audio grabbing devices and raw demuxers
-and is mapped to the corresponding demuxer options.
-@item -an (@emph{output})
-Disable audio recording.
-@item -acodec @var{codec} (@emph{input/output})
-Set the audio codec. This is an alias for @code{-codec:a}.
-@item -sample_fmt[:@var{stream_specifier}] @var{sample_fmt} (@emph{output,per-stream})
-Set the audio sample format. Use @code{-sample_fmts} to get a list
-of supported sample formats.
-@end table
-
-@section Advanced Audio options:
-
-@table @option
-@item -atag @var{fourcc/tag} (@emph{output})
-Force audio tag/fourcc. This is an alias for @code{-tag:a}.
-@item -audio_service_type @var{type}
-Set the type of service that the audio stream contains.
-@table @option
-@item ma
-Main Audio Service (default)
-@item ef
-Effects
-@item vi
-Visually Impaired
-@item hi
-Hearing Impaired
-@item di
-Dialogue
-@item co
-Commentary
-@item em
-Emergency
-@item vo
-Voice Over
-@item ka
-Karaoke
-@end table
-@end table
-
-@section Subtitle options:
-
-@table @option
-@item -scodec @var{codec} (@emph{input/output})
-Set the subtitle codec. This is an alias for @code{-codec:s}.
-@item -sn (@emph{output})
-Disable subtitle recording.
-@end table
-
-@section Audio/Video grab options
-
-@table @option
-@item -isync (@emph{global})
-Synchronize read on input.
-@end table
-
-@section Advanced options
-
-@table @option
-@item -map [-]@var{input_file_id}[:@var{stream_specifier}][,@var{sync_file_id}[:@var{stream_specifier}]] (@emph{output})
-
-Designate one or more input streams as a source for the output file. Each input
-stream is identified by the input file index @var{input_file_id} and
-the input stream index @var{input_stream_id} within the input
-file. Both indices start at 0. If specified,
-@var{sync_file_id}:@var{stream_specifier} sets which input stream
-is used as a presentation sync reference.
-
-The first @code{-map} option on the command line specifies the
-source for output stream 0, the second @code{-map} option specifies
-the source for output stream 1, etc.
-
-A @code{-} character before the stream identifier creates a "negative" mapping.
-It disables matching streams from already created mappings.
-
-For example, to map ALL streams from the first input file to output
-@example
-avconv -i INPUT -map 0 output
-@end example
-
-For example, if you have two audio streams in the first input file,
-these streams are identified by "0:0" and "0:1". You can use
-@code{-map} to select which streams to place in an output file. For
-example:
-@example
-avconv -i INPUT -map 0:1 out.wav
-@end example
-will map the input stream in @file{INPUT} identified by "0:1" to
-the (single) output stream in @file{out.wav}.
-
-For example, to select the stream with index 2 from input file
-@file{a.mov} (specified by the identifier "0:2"), and stream with
-index 6 from input @file{b.mov} (specified by the identifier "1:6"),
-and copy them to the output file @file{out.mov}:
-@example
-avconv -i a.mov -i b.mov -c copy -map 0:2 -map 1:6 out.mov
-@end example
-
-To select all video and the third audio stream from an input file:
-@example
-avconv -i INPUT -map 0:v -map 0:a:2 OUTPUT
-@end example
-
-To map all the streams except the second audio, use negative mappings
-@example
-avconv -i INPUT -map 0 -map -0:a:1 OUTPUT
-@end example
-
-Note that using this option disables the default mappings for this output file.
-
-@item -map_metadata[:@var{metadata_spec_out}] @var{infile}[:@var{metadata_spec_in}] (@emph{output,per-metadata})
-Set metadata information of the next output file from @var{infile}. Note that
-those are file indices (zero-based), not filenames.
-Optional @var{metadata_spec_in/out} parameters specify, which metadata to copy.
-A metadata specifier can have the following forms:
-@table @option
-@item @var{g}
-global metadata, i.e. metadata that applies to the whole file
-
-@item @var{s}[:@var{stream_spec}]
-per-stream metadata. @var{stream_spec} is a stream specifier as described
-in the @ref{Stream specifiers} chapter. In an input metadata specifier, the first
-matching stream is copied from. In an output metadata specifier, all matching
-streams are copied to.
-
-@item @var{c}:@var{chapter_index}
-per-chapter metadata. @var{chapter_index} is the zero-based chapter index.
-
-@item @var{p}:@var{program_index}
-per-program metadata. @var{program_index} is the zero-based program index.
-@end table
-If metadata specifier is omitted, it defaults to global.
-
-By default, global metadata is copied from the first input file,
-per-stream and per-chapter metadata is copied along with streams/chapters. These
-default mappings are disabled by creating any mapping of the relevant type. A negative
-file index can be used to create a dummy mapping that just disables automatic copying.
-
-For example to copy metadata from the first stream of the input file to global metadata
-of the output file:
-@example
-avconv -i in.ogg -map_metadata 0:s:0 out.mp3
-@end example
-
-To do the reverse, i.e. copy global metadata to all audio streams:
-@example
-avconv -i in.mkv -map_metadata:s:a 0:g out.mkv
-@end example
-Note that simple @code{0} would work as well in this example, since global
-metadata is assumed by default.
-
-@item -map_chapters @var{input_file_index} (@emph{output})
-Copy chapters from input file with index @var{input_file_index} to the next
-output file. If no chapter mapping is specified, then chapters are copied from
-the first input file with at least one chapter. Use a negative file index to
-disable any chapter copying.
-@item -debug
-Print specific debug info.
-@item -benchmark (@emph{global})
-Show benchmarking information at the end of an encode.
-Shows CPU time used and maximum memory consumption.
-Maximum memory consumption is not supported on all systems,
-it will usually display as 0 if not supported.
-@item -timelimit @var{duration} (@emph{global})
-Exit after avconv has been running for @var{duration} seconds.
-@item -dump (@emph{global})
-Dump each input packet to stderr.
-@item -hex (@emph{global})
-When dumping packets, also dump the payload.
-@item -ps @var{size}
-Set RTP payload size in bytes.
-@item -re (@emph{input})
-Read input at native frame rate. Mainly used to simulate a grab device.
-@item -threads @var{count}
-Thread count.
-@item -vsync @var{parameter}
-Video sync method.
-
-@table @option
-@item passthrough
-Each frame is passed with its timestamp from the demuxer to the muxer.
-@item cfr
-Frames will be duplicated and dropped to achieve exactly the requested
-constant framerate.
-@item vfr
-Frames are passed through with their timestamp or dropped so as to
-prevent 2 frames from having the same timestamp.
-@item auto
-Chooses between 1 and 2 depending on muxer capabilities. This is the
-default method.
-@end table
-
-With -map you can select from which stream the timestamps should be
-taken. You can leave either video or audio unchanged and sync the
-remaining stream(s) to the unchanged one.
-
-@item -async @var{samples_per_second}
-Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps,
-the parameter is the maximum samples per second by which the audio is changed.
--async 1 is a special case where only the start of the audio stream is corrected
-without any later correction.
-@item -copyts
-Copy timestamps from input to output.
-@item -copytb
-Copy input stream time base from input to output when stream copying.
-@item -shortest
-Finish encoding when the shortest input stream ends.
-@item -dts_delta_threshold
-Timestamp discontinuity delta threshold.
-@item -muxdelay @var{seconds} (@emph{input})
-Set the maximum demux-decode delay.
-@item -muxpreload @var{seconds} (@emph{input})
-Set the initial demux-decode delay.
-@item -streamid @var{output-stream-index}:@var{new-value} (@emph{output})
-Assign a new stream-id value to an output stream. This option should be
-specified prior to the output filename to which it applies.
-For the situation where multiple output files exist, a streamid
-may be reassigned to a different value.
-
-For example, to set the stream 0 PID to 33 and the stream 1 PID to 36 for
-an output mpegts file:
-@example
-avconv -i infile -streamid 0:33 -streamid 1:36 out.ts
-@end example
-
-@item -bsf[:@var{stream_specifier}] @var{bitstream_filters} (@emph{output,per-stream})
-Set bitstream filters for matching streams. @var{bistream_filters} is
-a comma-separated list of bitstream filters. Use the @code{-bsfs} option
-to get the list of bitstream filters.
-@example
-avconv -i h264.mp4 -c:v copy -vbsf h264_mp4toannexb -an out.h264
-@end example
-@example
-avconv -i file.mov -an -vn -sbsf mov2textsub -c:s copy -f rawvideo sub.txt
-@end example
-
-@item -tag[:@var{stream_specifier}] @var{codec_tag} (@emph{output,per-stream})
-Force a tag/fourcc for matching streams.
-@end table
-@c man end OPTIONS
-
-@chapter Tips
-@c man begin TIPS
-
-@itemize
-@item
-For streaming at very low bitrate application, use a low frame rate
-and a small GOP size. This is especially true for RealVideo where
-the Linux player does not seem to be very fast, so it can miss
-frames. An example is:
-
-@example
-avconv -g 3 -r 3 -t 10 -b 50k -s qcif -f rv10 /tmp/b.rm
-@end example
-
-@item
-The parameter 'q' which is displayed while encoding is the current
-quantizer. The value 1 indicates that a very good quality could
-be achieved. The value 31 indicates the worst quality. If q=31 appears
-too often, it means that the encoder cannot compress enough to meet
-your bitrate. You must either increase the bitrate, decrease the
-frame rate or decrease the frame size.
-
-@item
-If your computer is not fast enough, you can speed up the
-compression at the expense of the compression ratio. You can use
-'-me zero' to speed up motion estimation, and '-intra' to disable
-motion estimation completely (you have only I-frames, which means it
-is about as good as JPEG compression).
-
-@item
-To have very low audio bitrates, reduce the sampling frequency
-(down to 22050 Hz for MPEG audio, 22050 or 11025 for AC-3).
-
-@item
-To have a constant quality (but a variable bitrate), use the option
-'-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst
-quality).
-
-@end itemize
-@c man end TIPS
-
-@chapter Examples
-@c man begin EXAMPLES
-
-@section Preset files
-
-A preset file contains a sequence of @var{option=value} pairs, one for
-each line, specifying a sequence of options which can be specified also on
-the command line. Lines starting with the hash ('#') character are ignored and
-are used to provide comments. Empty lines are also ignored. Check the
-@file{presets} directory in the Libav source tree for examples.
-
-Preset files are specified with the @code{pre} option, this option takes a
-preset name as input.  Avconv searches for a file named @var{preset_name}.avpreset in
-the directories @file{$AVCONV_DATADIR} (if set), and @file{$HOME/.avconv}, and in
-the data directory defined at configuration time (usually @file{$PREFIX/share/avconv})
-in that order.  For example, if the argument is @code{libx264-max}, it will
-search for the file @file{libx264-max.avpreset}.
-
-@section Video and Audio grabbing
-
-If you specify the input format and device then avconv can grab video
-and audio directly.
-
-@example
-avconv -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg
-@end example
-
-Note that you must activate the right video source and channel before
-launching avconv with any TV viewer such as
-@uref{http://linux.bytesex.org/xawtv/, xawtv} by Gerd Knorr. You also
-have to set the audio recording levels correctly with a
-standard mixer.
-
-@section X11 grabbing
-
-Grab the X11 display with avconv via
-
-@example
-avconv -f x11grab -s cif -r 25 -i :0.0 /tmp/out.mpg
-@end example
-
-0.0 is display.screen number of your X11 server, same as
-the DISPLAY environment variable.
-
-@example
-avconv -f x11grab -s cif -r 25 -i :0.0+10,20 /tmp/out.mpg
-@end example
-
-0.0 is display.screen number of your X11 server, same as the DISPLAY environment
-variable. 10 is the x-offset and 20 the y-offset for the grabbing.
-
-@section Video and Audio file format conversion
-
-Any supported file format and protocol can serve as input to avconv:
-
-Examples:
-@itemize
-@item
-You can use YUV files as input:
-
-@example
-avconv -i /tmp/test%d.Y /tmp/out.mpg
-@end example
-
-It will use the files:
-@example
-/tmp/test0.Y, /tmp/test0.U, /tmp/test0.V,
-/tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc...
-@end example
-
-The Y files use twice the resolution of the U and V files. They are
-raw files, without header. They can be generated by all decent video
-decoders. You must specify the size of the image with the @option{-s} option
-if avconv cannot guess it.
-
-@item
-You can input from a raw YUV420P file:
-
-@example
-avconv -i /tmp/test.yuv /tmp/out.avi
-@end example
-
-test.yuv is a file containing raw YUV planar data. Each frame is composed
-of the Y plane followed by the U and V planes at half vertical and
-horizontal resolution.
-
-@item
-You can output to a raw YUV420P file:
-
-@example
-avconv -i mydivx.avi hugefile.yuv
-@end example
-
-@item
-You can set several input files and output files:
-
-@example
-avconv -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg
-@end example
-
-Converts the audio file a.wav and the raw YUV video file a.yuv
-to MPEG file a.mpg.
-
-@item
-You can also do audio and video conversions at the same time:
-
-@example
-avconv -i /tmp/a.wav -ar 22050 /tmp/a.mp2
-@end example
-
-Converts a.wav to MPEG audio at 22050 Hz sample rate.
-
-@item
-You can encode to several formats at the same time and define a
-mapping from input stream to output streams:
-
-@example
-avconv -i /tmp/a.wav -map 0:a -b 64k /tmp/a.mp2 -map 0:a -b 128k /tmp/b.mp2
-@end example
-
-Converts a.wav to a.mp2 at 64 kbits and to b.mp2 at 128 kbits. '-map
-file:index' specifies which input stream is used for each output
-stream, in the order of the definition of output streams.
-
-@item
-You can transcode decrypted VOBs:
-
-@example
-avconv -i snatch_1.vob -f avi -c:v mpeg4 -b:v 800k -g 300 -bf 2 -c:a libmp3lame -b:a 128k snatch.avi
-@end example
-
-This is a typical DVD ripping example; the input is a VOB file, the
-output an AVI file with MPEG-4 video and MP3 audio. Note that in this
-command we use B-frames so the MPEG-4 stream is DivX5 compatible, and
-GOP size is 300 which means one intra frame every 10 seconds for 29.97fps
-input video. Furthermore, the audio stream is MP3-encoded so you need
-to enable LAME support by passing @code{--enable-libmp3lame} to configure.
-The mapping is particularly useful for DVD transcoding
-to get the desired audio language.
-
-NOTE: To see the supported input formats, use @code{avconv -formats}.
-
-@item
-You can extract images from a video, or create a video from many images:
-
-For extracting images from a video:
-@example
-avconv -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
-@end example
-
-This will extract one video frame per second from the video and will
-output them in files named @file{foo-001.jpeg}, @file{foo-002.jpeg},
-etc. Images will be rescaled to fit the new WxH values.
-
-If you want to extract just a limited number of frames, you can use the
-above command in combination with the -vframes or -t option, or in
-combination with -ss to start extracting from a certain point in time.
-
-For creating a video from many images:
-@example
-avconv -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi
-@end example
-
-The syntax @code{foo-%03d.jpeg} specifies to use a decimal number
-composed of three digits padded with zeroes to express the sequence
-number. It is the same syntax supported by the C printf function, but
-only formats accepting a normal integer are suitable.
-
-@item
-You can put many streams of the same type in the output:
-
-@example
-avconv -i test1.avi -i test2.avi -map 0.3 -map 0.2 -map 0.1 -map 0.0 -c copy test12.nut
-@end example
-
-The resulting output file @file{test12.avi} will contain first four streams from
-the input file in reverse order.
-
-@end itemize
-@c man end EXAMPLES
-
-@include eval.texi
-@include encoders.texi
-@include demuxers.texi
-@include muxers.texi
-@include indevs.texi
-@include outdevs.texi
-@include protocols.texi
-@include bitstream_filters.texi
-@include filters.texi
-@include metadata.texi
-
-@ignore
-
-@setfilename avconv
-@settitle avconv video converter
-
-@c man begin SEEALSO
-ffplay(1), ffprobe(1), ffserver(1) and the FFmpeg HTML documentation
-
-@c man end
-
-@c man begin AUTHORS
-The Libav developers
-@c man end
-
-@end ignore
-
-@bye