FaceArt: Filters for Pictures Apps on Google Play | United Bluerise

This option is dangerous – it may break the preceding filter in undefined
ways if there are any additional constraints on that filter’s output. Do not use it without fully understanding the implications of its use. In a hardware to hardware mapping, map in reverse – create frames in the sink
and map them back to the source. This may be necessary in some cases where
a mapping in one direction is required but only the opposite direction is
supported by the devices being used. Set what color components to display.

• An intensity
  value greater to the set value is considered non-black.
• This option works only if the input frame has a supported color tag.
• Mute the original signal and output only added harmonics.
• Set what kind of colorspace to use when drawing graticule.
• Adjust cyan, magenta, yellow and black (CMYK) to certain ranges of colors (such
  as “reds”, “yellows”, “greens”, “cyans”, …).

Allowed range is from 1 to 200. Enable inverted filtering, by default is disabled. This inverts interpretation of threshold
option. When enabled any half-cycle of samples with their local peak value below or same as
threshold option will be expanded otherwise it will be compressed. Set the target threshold value.

39 colormap

Instruct libqrencode to use case sensitive encoding. This is enabled by
default. This can be disabled to reduce the QR encoding size. Mean Square Error pixel-by-pixel average difference of the compared
frames for the component specified by the suffix. Do not require 2nd input for processing, instead use alpha plane from input stream. The horizontal and vertical deblocking filters share the difference and
flatness values so you cannot set different horizontal and vertical
thresholds.

35 colorize

These options control the overall output mode. Depending on options, output
colors can be changed to be gray or not. In addition to the various configuration options, fieldmatch can take an
optional second stream, activated through the ppsrc option. If
enabled, the frames reconstruction will be based on the fields and frames from
this second stream. Typically, a field-aware denoiser,
or brightness/contrast adjustments can help. Set the minimum duration of the sourced audio.

Filtergraph description

This allows for
padding/trimming at the start of stream. By default, no assumption is made
about the first frame’s expected PTS, so no padding or trimming is done. Respectively set the x-axis and y-axis size of the window used during combed
frame detection. This has to do with the size of the area in which
combpel pixels are required to be detected as combed for a frame to be
declared combed. See the combpel parameter description for more info.