@@ -11,7 +11,6 @@ doc/*.1

 doc/*.html

 doc/*.pod

 doxy

-ffmpeg

 avconv

 avplay

 avprobe

@@ -52,7 +52,6 @@ COMPILE_S = $(call COMPILE,AS)

 %.c %.h: TAG = GEN

-PROGS-$(CONFIG_FFMPEG)   += ffmpeg

 PROGS-$(CONFIG_AVCONV)   += avconv

 PROGS-$(CONFIG_AVPLAY)   += avplay

 PROGS-$(CONFIG_AVPROBE)  += avprobe

@@ -65,7 +64,7 @@ HOSTPROGS  := $(TESTTOOLS:%=tests/%)

 TOOLS       = qt-faststart trasher

 TOOLS-$(CONFIG_ZLIB) += cws2fws

-BASENAMES   = ffmpeg avconv avplay avprobe avserver

+BASENAMES   = avconv avplay avprobe avserver

 ALLPROGS    = $(BASENAMES:%=%$(EXESUF))

 ALLMANPAGES = $(BASENAMES:%=%.1)

@@ -80,7 +80,6 @@ Configuration options:

   --enable-nonfree         allow use of nonfree code, the resulting libs

                            and binaries will be unredistributable [no]

   --disable-doc            do not build documentation

-  --disable-ffmpeg         disable ffmpeg build

   --disable-avconv         disable avconv build

   --disable-avplay         disable avplay build

   --disable-avprobe        disable avprobe build

@@ -911,7 +910,6 @@ PROGRAM_LIST="

     avplay

     avprobe

     avserver

-    ffmpeg

 "

 CONFIG_LIST="

@@ -1536,7 +1534,6 @@ avplay_select="rdft"

 avprobe_deps="avcodec avformat"

 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"

 avserver_extralibs='$ldl'

-ffmpeg_deps="avcodec avformat swscale"

 doc_deps="texi2html"

deleted file mode 100644

@@ -1,1091 +0,0 @@

-\input texinfo @c -*- texinfo -*-

-

-@settitle ffmpeg Documentation

-@titlepage

-@center @titlefont{ffmpeg Documentation}

-@end titlepage

-

-@top

-

-@contents

-

-@chapter Synopsis

-

-The generic syntax is:

-

-@example

-@c man begin SYNOPSIS

-ffmpeg [[infile options][@option{-i} @var{infile}]]... @{[outfile options] @var{outfile}@}...

-@c man end

-@end example

-

-@chapter Description

-@c man begin DESCRIPTION

-

-ffmpeg 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.

-

-The command line interface is designed to be intuitive, in the sense

-that ffmpeg tries to figure out all parameters that can possibly be

-derived automatically. You usually only have to specify the target

-bitrate you want.

-

-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.

-

-@itemize

-@item

-To set the video bitrate of the output file to 64kbit/s:

-@example

-ffmpeg -i input.avi -b 64k output.avi

-@end example

-

-@item

-To force the frame rate of the output file to 24 fps:

-@example

-ffmpeg -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

-ffmpeg -r 1 -i input.m2v -r 24 output.avi

-@end example

-@end itemize

-

-The format option may be needed for raw input files.

-

-By default ffmpeg tries to convert as losslessly as possible: It

-uses the same audio and video parameters for the outputs as the one

-specified for the inputs.

-

-@c man end DESCRIPTION

-

-@chapter Options

-@c man begin OPTIONS

-

-@include avtools-common-opts.texi

-

-@section Main options

-

-@table @option

-

-@item -f @var{fmt}

-Force format.

-

-@item -i @var{filename}

-input file name

-

-@item -y

-Overwrite output files.

-

-@item -t @var{duration}

-Restrict the transcoded/captured video sequence

-to the duration specified in seconds.

-@code{hh:mm:ss[.xxx]} syntax is also supported.

-

-@item -fs @var{limit_size}

-Set the file size limit.

-

-@item -ss @var{position}

-Seek to given time position in seconds.

-@code{hh:mm:ss[.xxx]} syntax is also supported.

-

-@item -itsoffset @var{offset}

-Set the input time offset in seconds.

-@code{[-]hh:mm:ss[.xxx]} syntax is also supported.

-This option affects all the input files that follow it.

-The offset is added to the timestamps of the input files.

-Specifying a positive offset means that the corresponding

-streams are delayed by 'offset' seconds.

-

-@item -timestamp @var{time}

-Set the recording timestamp in the container.

-The syntax for @var{time} is:

-@example

-now|([(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH[:MM[:SS[.m...]]])|(HH[MM[SS[.m...]]]))[Z|z])

-@end example

-If the value is "now" it takes the current time.

-Time is local time unless 'Z' or 'z' is appended, in which case it is

-interpreted as UTC.

-If the year-month-day part is not specified it takes the current

-year-month-day.

-

-@item -metadata @var{key}=@var{value}

-Set a metadata key/value pair.

-

-For example, for setting the title in the output file:

-@example

-ffmpeg -i in.avi -metadata title="my title" out.flv

-@end example

-

-@item -v @var{number}

-Set the logging verbosity level.

-

-@item -target @var{type}

-Specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd",

-"ntsc-svcd", ... ). All the format options (bitrate, codecs,

-buffer sizes) are then set automatically. You can just type:

-

-@example

-ffmpeg -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

-ffmpeg -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg

-@end example

-

-@item -dframes @var{number}

-Set the number of data frames to record.

-

-@item -scodec @var{codec}

-Force subtitle codec ('copy' to copy stream).

-

-@item -newsubtitle

-Add a new subtitle stream to the current output stream.

-

-@item -slang @var{code}

-Set the ISO 639 language code (3 letters) of the current subtitle stream.

-

-@end table

-

-@section Video Options

-

-@table @option

-@item -vframes @var{number}

-Set the number of video frames to record.

-@item -r @var{fps}

-Set frame rate (Hz value, fraction or abbreviation), (default = 25).

-@item -s @var{size}

-Set frame size. The format is @samp{wxh} (avserver default = 160x128, ffmpeg 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{aspect}

-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 -croptop @var{size}

-@item -cropbottom @var{size}

-@item -cropleft @var{size}

-@item -cropright @var{size}

-All the crop options have been removed. Use -vf

-crop=width:height:x:y instead.

-

-@item -padtop @var{size}

-@item -padbottom @var{size}

-@item -padleft @var{size}

-@item -padright @var{size}

-@item -padcolor @var{hex_color}

-All the pad options have been removed. Use -vf

-pad=width:height:x:y:color instead.

-@item -vn

-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

-ffmpeg -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}

-Force video codec to @var{codec}. Use the @code{copy} special value to

-tell that the raw codec data must be copied as is.

-@item -sameq

-Use same quantizer as source (implies VBR).

-

-@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

-ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y NUL

-ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y /dev/null

-@end example

-

-@item -passlogfile @var{prefix}

-Set two-pass log file name prefix to @var{prefix}, the default file name

-prefix is ``ffmpeg2pass''. The complete file name will be

-@file{PREFIX-N.log}, where N is a number specific to the output

-stream.

-

-@item -newvideo

-Add a new video stream to the current output stream.

-

-@item -vlang @var{code}

-Set the ISO 639 language code (3 letters) of the current video stream.

-

-@item -vf @var{filter_graph}

-@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).

-

-@end table

-

-@section Advanced Video Options

-

-@table @option

-@item -pix_fmt @var{format}

-Set pixel format. Use 'list' as parameter to show all the supported

-pixel formats.

-@item -sws_flags @var{flags}

-Set SwScaler flags.

-@item -g @var{gop_size}

-Set the group of pictures size.

-@item -intra

-Use only intra frames.

-@item -vdt @var{n}

-Discard threshold.

-@item -qscale @var{q}

-Use fixed video quantizer scale (VBR).

-@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

-ffmpeg -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{override}

-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 -dct_algo @var{algo}

-Set DCT algorithm to @var{algo}. Available values are:

-@table @samp

-@item 0

-FF_DCT_AUTO (default)

-@item 1

-FF_DCT_FASTINT

-@item 2

-FF_DCT_INT

-@item 3

-FF_DCT_MMX

-@item 4

-FF_DCT_MLIB

-@item 5

-FF_DCT_ALTIVEC

-@end table

-

-@item -idct_algo @var{algo}

-Set IDCT algorithm to @var{algo}. Available values are:

-@table @samp

-@item 0

-FF_IDCT_AUTO (default)

-@item 1

-FF_IDCT_INT

-@item 2

-FF_IDCT_SIMPLE

-@item 3

-FF_IDCT_SIMPLEMMX

-@item 4

-FF_IDCT_LIBMPEG2MMX

-@item 5

-FF_IDCT_PS2

-@item 6

-FF_IDCT_MLIB

-@item 7

-FF_IDCT_ARM

-@item 8

-FF_IDCT_ALTIVEC

-@item 9

-FF_IDCT_SH4

-@item 10

-FF_IDCT_SIMPLEARM

-@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_EXPLODE

-@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 ffmpeg).

-@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 -4mv

-Use four motion vector by macroblock (MPEG-4 only).

-@item -part

-Use data partitioning (MPEG-4 only).

-@item -bug @var{param}

-Work around encoder bugs that are not auto-detected.

-@item -strict @var{strictness}

-How strictly to follow the standards.

-@item -aic

-Enable Advanced intra coding (h263+).

-@item -umv

-Enable Unlimited Motion Vector (h263+)

-

-@item -deinterlace

-Deinterlace pictures.

-@item -ilme

-Force interlacing support in encoder (MPEG-2 and MPEG-4 only).

-Use this option if your input file is interlaced and you want

-to keep the interlaced format for minimum losses.

-The alternative is to deinterlace the input stream with

-@option{-deinterlace}, but deinterlacing introduces losses.

-@item -psnr

-Calculate PSNR of compressed frames.

-@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{n}

-top=1/bottom=0/auto=-1 field first

-@item -dc @var{precision}

-Intra_dc_precision.

-@item -vtag @var{fourcc/tag}

-Force video tag/fourcc.

-@item -qphist

-Show QP histogram.

-@item -vbsf @var{bitstream_filter}

-Bitstream filters available are "dump_extra", "remove_extra", "noise", "h264_mp4toannexb", "imxdump", "mjpegadump", "mjpeg2jpeg".

-@example

-ffmpeg -i h264.mp4 -vcodec copy -vbsf h264_mp4toannexb -an out.h264

-@end example

-@item -force_key_frames @var{time}[,@var{time}...]

-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.

-@end table

-

-@section Audio Options

-

-@table @option

-@item -aframes @var{number}

-Set the number of audio frames to record.

-@item -ar @var{freq}

-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}

-Set the audio quality (codec-specific, VBR).

-@item -ac @var{channels}

-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

-Disable audio recording.

-@item -acodec @var{codec}

-Force audio codec to @var{codec}. Use the @code{copy} special value to

-specify that the raw codec data must be copied as is.

-@item -newaudio

-Add a new audio track to the output file. If you want to specify parameters,

-do so before @code{-newaudio} (@code{-acodec}, @code{-ab}, etc..).

-

-Mapping will be done automatically, if the number of output streams is equal to

-the number of input streams, else it will pick the first one that matches. You

-can override the mapping using @code{-map} as usual.

-

-Example:

-@example

-ffmpeg -i file.mpg -vcodec copy -acodec ac3 -ab 384k test.mpg -acodec mp2 -ab 192k -newaudio

-@end example

-@item -alang @var{code}

-Set the ISO 639 language code (3 letters) of the current audio stream.

-@end table

-

-@section Advanced Audio options:

-

-@table @option

-@item -atag @var{fourcc/tag}

-Force audio tag/fourcc.

-@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

-@item -absf @var{bitstream_filter}

-Bitstream filters available are "dump_extra", "remove_extra", "noise", "mp3comp", "mp3decomp".

-@end table

-

-@section Subtitle options:

-

-@table @option

-@item -scodec @var{codec}

-Force subtitle codec ('copy' to copy stream).

-@item -newsubtitle

-Add a new subtitle stream to the current output stream.

-@item -slang @var{code}

-Set the ISO 639 language code (3 letters) of the current subtitle stream.

-@item -sn

-Disable subtitle recording.

-@item -sbsf @var{bitstream_filter}

-Bitstream filters available are "mov2textsub", "text2movsub".

-@example

-ffmpeg -i file.mov -an -vn -sbsf mov2textsub -scodec copy -f rawvideo sub.txt

-@end example

-@end table

-

-@section Audio/Video grab options

-

-@table @option

-@item -vc @var{channel}

-Set video grab channel (DV1394 only).

-@item -tvstd @var{standard}

-Set television standard (NTSC, PAL (SECAM)).

-@item -isync

-Synchronize read on input.

-@end table

-

-@section Advanced options

-

-@table @option

-@item -map @var{input_file_id}.@var{input_stream_id}[:@var{sync_file_id}.@var{sync_stream_id}]

-

-Designate an input stream 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 indexes start at 0. If specified,

-@var{sync_file_id}.@var{sync_stream_id} sets which input stream

-is used as a presentation sync reference.

-

-The @code{-map} options must be specified just after the output file.

-If any @code{-map} options are used, the number of @code{-map} options

-on the command line must match the number of streams in the output

-file. 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.

-

-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 stream to place in an output file. For

-example:

-@example

-ffmpeg -i INPUT out.wav -map 0.1

-@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

-ffmpeg -i a.mov -i b.mov -vcodec copy -acodec copy out.mov -map 0.2 -map 1.6

-@end example

-

-To add more streams to the output file, you can use the

-@code{-newaudio}, @code{-newvideo}, @code{-newsubtitle} options.

-

-@item -map_meta_data @var{outfile}[,@var{metadata}]:@var{infile}[,@var{metadata}]

-Deprecated, use @var{-map_metadata} instead.

-

-@item -map_metadata @var{outfile}[,@var{metadata}]:@var{infile}[,@var{metadata}]

-Set metadata information of @var{outfile} from @var{infile}. Note that those

-are file indices (zero-based), not filenames.

-Optional @var{metadata} parameters specify, which metadata to copy - (g)lobal

-(i.e. metadata that applies to the whole file), per-(s)tream, per-(c)hapter or

-per-(p)rogram. All metadata specifiers other than global must be followed by the

-stream/chapter/program number. If metadata specifier is omitted, it defaults to

-global.

-

-By default, global metadata is copied from the first input file to all output files,

-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

-ffmpeg -i in.ogg -map_metadata 0:0,s0 out.mp3

-@end example

-@item -map_chapters @var{outfile}:@var{infile}

-Copy chapters from @var{infile} to @var{outfile}. If no chapter mapping is specified,

-then chapters are copied from the first input file with at least one chapter to all

-output files. Use a negative file index to disable any chapter copying.

-@item -debug

-Print specific debug info.

-@item -benchmark

-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 -dump

-Dump each input packet.

-@item -hex

-When dumping packets, also dump the payload.

-@item -bitexact

-Only use bit exact algorithms (for codec testing).

-@item -ps @var{size}

-Set RTP payload size in bytes.

-@item -re

-Read input at native frame rate. Mainly used to simulate a grab device.

-@item -loop_input

-Loop over the input stream. Currently it works only for image

-streams. This option is used for automatic AVserver testing.

-This option is deprecated, use -loop.

-@item -loop_output @var{number_of_times}

-Repeatedly loop output for formats that support looping such as animated GIF

-(0 will loop the output infinitely).

-This option is deprecated, use -loop.

-@item -threads @var{count}

-Thread count.

-@item -vsync @var{parameter}

-Video sync method.

-

-@table @option

-@item 0

-Each frame is passed with its timestamp from the demuxer to the muxer.

-@item 1

-Frames will be duplicated and dropped to achieve exactly the requested

-constant framerate.

-@item 2

-Frames are passed through with their timestamp or dropped so as to

-prevent 2 frames from having the same timestamp.

-@item -1

-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}

-Set the maximum demux-decode delay.

-@item -muxpreload @var{seconds}

-Set the initial demux-decode delay.

-@item -streamid @var{output-stream-index}:@var{new-value}

-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

-ffmpeg -i infile -streamid 0:33 -streamid 1:36 out.ts

-@end example

-@end table

-

-@section Preset files

-

-A preset file contains a sequence of @var{option}=@var{value} pairs,

-one for each line, specifying a sequence of options which would be

-awkward to specify on the command line. Lines starting with the hash

-('#') character are ignored and are used to provide comments. Check

-the @file{presets} directory in the Libav source tree for examples.

-

-Preset files are specified with the @code{vpre}, @code{apre},

-@code{spre}, and @code{fpre} options. The @code{fpre} option takes the

-filename of the preset instead of a preset name as input and can be

-used for any kind of codec. For the @code{vpre}, @code{apre}, and

-@code{spre} options, the options specified in a preset file are

-applied to the currently selected codec of the same type as the preset

-option.

-

-The argument passed to the @code{vpre}, @code{apre}, and @code{spre}

-preset options identifies the preset file to use according to the

-following rules:

-

-First ffmpeg searches for a file named @var{arg}.ffpreset in the

-directories @file{$AVCONV_DATADIR} (if set), and @file{$HOME/.avconv}, and in

-the datadir 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.ffpreset}.

-

-If no such file is found, then ffmpeg will search for a file named

-@var{codec_name}-@var{arg}.ffpreset in the above-mentioned

-directories, where @var{codec_name} is the name of the codec to which

-the preset file options will be applied. For example, if you select

-the video codec with @code{-vcodec libx264} and use @code{-vpre max},

-then it will search for the file @file{libx264-max.ffpreset}.

-@c man end

-

-@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