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.
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
@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
@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