pipeline drops frames. If you're trying to apply an image as an
overlay to a video stream, consider the @var{overlay} filter instead.
+@section amplify
+
+Amplify differences between current pixel and pixels of adjacent frames in
+same pixel location.
+
+This filter accepts the following options:
+
+@table @option
+@item radius
+Set frame radius. Default is 2. Allowed range is from 1 to 63.
+For example radius of 3 will instruct filter to calculate average of 7 frames.
+
+@item factor
+Set factor to amplify difference. Default is 2. Allowed range is from 0 to 65535.
+
+@item threshold
+Set threshold for difference amplification. Any differrence greater or equal to
+this value will not alter source pixel. Default is 10.
+Allowed range is from 0 to 65535.
+
+@item low
+Set lower limit for changing source pixel. Default is 65535. Allowed range is from 0 to 65535.
+This option controls maximum possible value that will decrease source pixel value.
+
+@item high
+Set high limit for changing source pixel. Default is 65535. Allowed range is from 0 to 65535.
+This option controls maximum possible value that will increase source pixel value.
+
+@item planes
+Set which planes to filter. Default is all. Allowed range is from 0 to 15.
+@end table
+
@section ass
Same as the @ref{subtitles} filter, except that it doesn't require libavcodec
threshold B is designed to react on continuous changes in the input signal.
@item s
-Set number of frames filter will use for averaging. Default is 33. Must be odd
+Set number of frames filter will use for averaging. Default is 9. Must be odd
number in range [5, 129].
@item p
@section convolution
-Apply convolution 3x3, 5x5 or 7x7 filter.
+Apply convolution of 3x3, 5x5, 7x7 or horizontal/vertical up to 49 elements.
The filter accepts the following options:
@item 2m
@item 3m
Set matrix for each plane.
-Matrix is sequence of 9, 25 or 49 signed integers.
+Matrix is sequence of 9, 25 or 49 signed integers in @var{square} mode,
+and from 1 to 49 odd number of signed integers in @var{row} mode.
@item 0rdiv
@item 1rdiv
@item 2rdiv
@item 3rdiv
Set multiplier for calculated value for each plane.
+If unset or 0, it will be sum of all matrix elements.
@item 0bias
@item 1bias
@item 3bias
Set bias for each plane. This value is added to the result of the multiplication.
Useful for making the overall image brighter or darker. Default is 0.0.
+
+@item 0mode
+@item 1mode
+@item 2mode
+@item 3mode
+Set matrix mode for each plane. Can be @var{square}, @var{row} or @var{column}.
+Default is @var{square}.
@end table
@subsection Examples
The default is disabled.
@end table
+@section deblock
+
+Remove blocking artifacts from input video.
+
+The filter accepts the following options:
+
+@table @option
+@item filter
+Set filter type, can be @var{weak} or @var{strong}. Default is @var{strong}.
+This controls what kind of deblocking is applied.
+
+@item block
+Set size of block, allowed range is from 4 to 512. Default is @var{8}.
+
+@item alpha
+@item beta
+@item gamma
+@item delta
+Set blocking detection thresholds. Allowed range is 0 to 1.
+Defaults are: @var{0.098} for @var{alpha} and @var{0.05} for the rest.
+Using higher threshold gives more deblocking strength.
+Setting @var{alpha} controls threshold detection at exact edge of block.
+Remaining options controls threshold detection near the edge. Each one for
+below/above or left/right. Setting any of those to @var{0} disables
+deblocking.
+
+@item planes
+Set planes to filter. Default is to filter all available planes.
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Deblock using weak filter and block size of 4 pixels.
+@example
+deblock=filter=weak:block=4
+@end example
+
+@item
+Deblock using strong filter, block size of 4 pixels and custom thresholds for
+deblocking more edges.
+@example
+deblock=filter=strong:block=4:alpha=0.12:beta=0.07:gamma=0.06:delta=0.05
+@end example
+
+@item
+Similar as above, but filter only first plane.
+@example
+deblock=filter=strong:block=4:alpha=0.12:beta=0.07:gamma=0.06:delta=0.05:planes=1
+@end example
+
+@item
+Similar as above, but filter only second and third plane.
+@example
+deblock=filter=strong:block=4:alpha=0.12:beta=0.07:gamma=0.06:delta=0.05:planes=6
+@end example
+@end itemize
+
@anchor{decimate}
@section decimate
@item colormix
Mix the colors to create a paint/cartoon effect.
-@end table
+@item canny
+Apply Canny edge detector on all selected planes.
+@end table
Default value is @var{wires}.
+
+@item planes
+Select planes for filtering. By default all available planes are filtered.
@end table
@subsection Examples
@item weights
Specify weight of each input video stream as sequence.
-Each weight is separated by space.
+Each weight is separated by space. If number of weights
+is smaller than number of @var{frames} last specified
+weight will be used for all remaining unset weights.
+
+@item scale
+Specify scale, if it is set it will be multiplied with sum
+of each weight multiplied with pixel values to give final destination
+pixel value. By default @var{scale} is auto scaled to sum of weights.
@item duration
Specify how end of stream is determined.
@end table
+@section tmix
+
+Mix successive video frames.
+
+A description of the accepted options follows.
+
+@table @option
+@item frames
+The number of successive frames to mix. If unspecified, it defaults to 3.
+
+@item weights
+Specify weight of each input video frame.
+Each weight is separated by space. If number of weights is smaller than
+number of @var{frames} last specified weight will be used for all remaining
+unset weights.
+
+@item scale
+Specify scale, if it is set it will be multiplied with sum
+of each weight multiplied with pixel values to give final destination
+pixel value. By default @var{scale} is auto scaled to sum of weights.
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Average 7 successive frames:
+@example
+tmix=frames=7:weights="1 1 1 1 1 1 1"
+@end example
+
+@item
+Apply simple temporal convolution:
+@example
+tmix=frames=3:weights="-1 3 -1"
+@end example
+
+@item
+Similar as above but only showing temporal differences:
+@example
+tmix=frames=3:weights="-1 2 -1":scale=1
+@end example
+@end itemize
+
@section tonemap
Tone map colors from different dynamic ranges.
projects / ffmpeg / blobdiff