For example full key look like this @code{lavfi.astats.1.DC_offset} or
this @code{lavfi.astats.Overall.Peak_count}.
-For description what each key means read bellow.
+For description what each key means read below.
@item reset
Set number of frame after which stats are going to be recalculated.
Convert the audio sample format, sample rate and channel layout. It is
not meant to be used directly.
+@section rubberband
+Apply time-stretching and pitch-shifting with librubberband.
+
+The filter accepts the following options:
+
+@table @option
+@item tempo
+Set tempo scale factor.
+
+@item pitch
+Set pitch scale factor.
+
+@item transients
+Set transients detector.
+Possible values are:
+@table @var
+@item crisp
+@item mixed
+@item smooth
+@end table
+
+@item detector
+Set detector.
+Possible values are:
+@table @var
+@item compound
+@item percussive
+@item soft
+@end table
+
+@item phase
+Set phase.
+Possible values are:
+@table @var
+@item laminar
+@item independent
+@end table
+
+@item window
+Set processing window size.
+Possible values are:
+@table @var
+@item standard
+@item short
+@item long
+@end table
+
+@item smoothing
+Set smoothing.
+Possible values are:
+@table @var
+@item off
+@item on
+@end table
+
+@item formant
+Enable formant preservation when shift pitching.
+Possible values are:
+@table @var
+@item shifted
+@item preserved
+@end table
+
+@item pitchq
+Set pitch quality.
+Possible values are:
+@table @var
+@item quality
+@item speed
+@item consistency
+@end table
+
+@item channels
+Set channels.
+Possible values are:
+@table @var
+@item apart
+@item together
+@end table
+@end table
+
@section sidechaincompress
This filter acts like normal compressor but has the ability to compress
reduction starts. Default is 20. Range is between 0.01 and 2000.
@item release
-Amount of milliseconds the signal has to fall bellow the threshold before
+Amount of milliseconds the signal has to fall below the threshold before
reduction is decreased again. Default is 250. Range is between 0.01 and 9000.
@item makeup
Available values for component modes are:
@table @samp
@item addition
+@item addition128
@item and
@item average
@item burn
@end example
@end itemize
+@section chromakey
+YUV colorspace color/chroma keying.
+
+The filter accepts the following options:
+
+@table @option
+@item color
+The color which will be replaced with transparency.
+
+@item similarity
+Similarity percentage with the key color.
+
+0.01 matches only the exact key color, while 1.0 matches everything.
+
+@item blend
+Blend percentage.
+
+0.0 makes pixels either fully transparent, or not transparent at all.
+
+Higher values result in semi-transparent pixels, with a higher transparency
+the more similar the pixels color is to the key color.
+
+@item yuv
+Signals that the color passed is already in YUV instead of RGB.
+
+Litteral colors like "green" or "red" don't make sense with this enabled anymore.
+This can be used to pass exact YUV values as hexadecimal numbers.
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Make every green pixel in the input image transparent:
+@example
+ffmpeg -i input.png -vf chromakey=green out.png
+@end example
+
+@item
+Overlay a greenscreen-video on top of a static black background.
+@example
+ffmpeg -f lavfi -i color=c=black:s=1280x720 -i video.mp4 -shortest -filter_complex "[1:v]chromakey=0x70de77:0.1:0.2[ckout];[0:v][ckout]overlay[out]" -map "[out]" output.mkv
+@end example
+@end itemize
+
@section codecview
Visualize information exported by some codecs.
@item threshold1
@item threshold2
@item threshold3
-Allows to limit the maximum change for each plane, default is 65535.
+Limit the maximum change for each plane, default is 65535.
If 0, plane will remain unchanged.
@end table
@item band, t
Specify the thickness of the fuzzy edge of the rectangle (added to
-@var{w} and @var{h}). The default value is 4.
+@var{w} and @var{h}). The default value is 1. This option is
+deprecated, setting higher values should no longer be necessary and
+is not recommended.
@item show
When set to 1, a green rectangle is drawn on the screen to simplify
@item threshold1
@item threshold2
@item threshold3
-Allows to limit the maximum change for each plane, default is 65535.
+Limit the maximum change for each plane, default is 65535.
If 0, plane will remain unchanged.
@item coordinates
6 7 8
@end table
+@section displace
+
+Displace pixels as indicated by second and third input stream.
+
+It takes three input streams and outputs one stream, the first input is the
+source, and second and third input are displacement maps.
+
+The second input specifies how much to displace pixels along the
+x-axis, while the third input specifies how much to displace pixels
+along the y-axis.
+If one of displacement map streams terminates, last frame from that
+displacement map will be used.
+
+Note that once generated, displacements maps can be reused over and over again.
+
+A description of the accepted options follows.
+
+@table @option
+@item edge
+Set displace behavior for pixels that are out of range.
+
+Available values are:
+@table @samp
+@item blank
+Missing pixels are replaced by black pixels.
+
+@item smear
+Adjacent pixels will spread out to replace missing pixels.
+
+@item wrap
+Out of range pixels are wrapped so they point to pixels of other side.
+@end table
+Default is @samp{smear}.
+
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Add ripple effect to rgb input of video size hd720:
+@example
+ffmpeg -i INPUT -f lavfi -i nullsrc=s=hd720,lutrgb=128:128:128 -f lavfi -i nullsrc=s=hd720,geq='r=128+30*sin(2*PI*X/400+T):g=128+30*sin(2*PI*X/400+T):b=128+30*sin(2*PI*X/400+T)' -lavfi '[0][1][2]displace' OUTPUT
+@end example
+
+@item
+Add wave effect to rgb input of video size hd720:
+@example
+ffmpeg -i INPUT -f lavfi -i nullsrc=hd720,geq='r=128+80*(sin(sqrt((X-W/2)*(X-W/2)+(Y-H/2)*(Y-H/2))/220*2*PI+T)):g=128+80*(sin(sqrt((X-W/2)*(X-W/2)+(Y-H/2)*(Y-H/2))/220*2*PI+T)):b=128+80*(sin(sqrt((X-W/2)*(X-W/2)+(Y-H/2)*(Y-H/2))/220*2*PI+T))' -lavfi '[1]split[x][y],[0][x][y]displace' OUTPUT
+@end example
+@end itemize
+
@section drawbox
Draw a colored box on the input image.
@item threshold1
@item threshold2
@item threshold3
-Allows to limit the maximum change for each plane, default is 65535.
+Limit the maximum change for each plane, default is 65535.
If 0, plane will remain unchanged.
@item coordinates
@item threshold1
@item threshold2
@item threshold3
-Allows to limit the maximum change for each plane, default is 65535.
+Limit the maximum change for each plane, default is 65535.
If 0, plane will remain unchanged.
@end table
@end example
@end itemize
+@section maskedmerge
+
+Merge the first input stream with the second input stream using per pixel
+weights in the third input stream.
+
+A value of 0 in the third stream pixel component means that pixel component
+from first stream is returned unchanged, while maximum value (eg. 255 for
+8-bit videos) means that pixel component from second stream is returned
+unchanged. Intermediate values define the amount of merging between both
+input stream's pixel components.
+
+This filter accepts the following options:
+@table @option
+@item planes
+Set which planes will be processed as bitmap, unprocessed planes will be
+copied from first stream.
+By default value 0xf, all planes will be processed.
+@end table
+
+@section mcdeint
+
+Apply motion-compensation deinterlacing.
+
+It needs one field per frame as input and must thus be used together
+with yadif=1/3 or equivalent.
+
+This filter accepts the following options:
+@table @option
+@item mode
+Set the deinterlacing mode.
+
+It accepts one of the following values:
+@table @samp
+@item fast
+@item medium
+@item slow
+use iterative motion estimation
+@item extra_slow
+like @samp{slow}, but use multiple reference frames.
+@end table
+Default value is @samp{fast}.
+
+@item parity
+Set the picture field parity assumed for the input video. It must be
+one of the following values:
+
+@table @samp
+@item 0, tff
+assume top field first
+@item 1, bff
+assume bottom field first
+@end table
+
+Default value is @samp{bff}.
+
+@item qp
+Set per-block quantization parameter (QP) used by the internal
+encoder.
+
+Higher values should result in a smoother motion vector field but less
+optimal individual vectors. Default value is 1.
+@end table
+
@section mergeplanes
Merge color channel components from several video streams.
@end example
@end itemize
-@section mcdeint
-
-Apply motion-compensation deinterlacing.
-
-It needs one field per frame as input and must thus be used together
-with yadif=1/3 or equivalent.
-
-This filter accepts the following options:
-@table @option
-@item mode
-Set the deinterlacing mode.
-
-It accepts one of the following values:
-@table @samp
-@item fast
-@item medium
-@item slow
-use iterative motion estimation
-@item extra_slow
-like @samp{slow}, but use multiple reference frames.
-@end table
-Default value is @samp{fast}.
-
-@item parity
-Set the picture field parity assumed for the input video. It must be
-one of the following values:
-
-@table @samp
-@item 0, tff
-assume top field first
-@item 1, bff
-assume bottom field first
-@end table
-
-Default value is @samp{bff}.
-
-@item qp
-Set per-block quantization parameter (QP) used by the internal
-encoder.
-
-Higher values should result in a smoother motion vector field but less
-optimal individual vectors. Default value is 1.
-@end table
-
@section mpdecimate
Drop frames that do not differ greatly from the previous frame in
@end example
@item
-Convert input video from above bellow (left eye above, right eye below) to side by side crosseye.
+Convert input video from above below (left eye above, right eye below) to side by side crosseye.
@example
stereo3d=abl:sbsr
@end example
11111 11111 22222 22222 33333 33333 44444
@end example
+@item mergex2, 7
+Move odd frames into the upper field, even into the lower field,
+generating a double height frame at same frame rate.
+@example
+ ------> time
+Input:
+Frame 1 Frame 2 Frame 3 Frame 4
+
+11111 22222 33333 44444
+11111 22222 33333 44444
+11111 22222 33333 44444
+11111 22222 33333 44444
+
+Output:
+11111 33333 33333 55555
+22222 22222 44444 44444
+11111 33333 33333 55555
+22222 22222 44444 44444
+11111 33333 33333 55555
+22222 22222 44444 44444
+11111 33333 33333 55555
+22222 22222 44444 44444
+@end example
@end table
This mode requires a build with @code{libswresample}.
@end table
+@item dualmono
+Treat mono input files as "dual mono". If a mono file is intended for playback
+on a stereo system, its EBU R128 measurement will be perceptually incorrect.
+If set to @code{true}, this option will compensate for this effect.
+Multi-channel input files are not effected by this option.
+
+@item panlaw
+Set a specific pan law to be used for the measurement of dual mono files.
+This parameter is optional, and has a default value of -3.01dB.
@end table
@subsection Examples
projects / ffmpeg / blobdiff