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TurnsTile

A mosaic and palette effects plugin for Avisynth.

Build Status

Requirements

  1. Avisynth 2.6 or greater, or Avisynth+
  2. [Windows] Microsoft's Visual C++ 2019 Redistributable - x64 - x86

http://www.gyroshot.com/turnstile.htm
robert.martens@gmail.com
@ItEndsWithTens

TurnsTile

TurnsTile(clip c, clip "tilesheet", int "tilew", int "tileh", int "res",
          int "mode", string "levels", int "lotile", int "hitile",
          bool "interlaced")

c clip

  • The input clip, which can be RGB32, RGB24, YUY2, or YV12.

tilesheet clip

  • Optional; if supplied, tiles will be pulled from this clip, which must be in
    the same colorspace as 'c'. Your tilesheet can be a still image or a video.
    In the latter case, tiles for a given frame of 'c' will be clipped from the
    corresponding frame of 'tilesheet'.

    The tiles are numbered left to right, then top to bottom. Using the provided
    tilesheets as examples, with 16x16 pixel tiles in a 256x256 pixel image, the
    top left tile is number 0, top right is 15, bottom left is 240, and bottom
    right is 255. Design your own custom images accordingly, with dark tones at
    the top left fading up to lighter ones at the bottom right (first left to
    right across a row, then top to bottom one row at a time).

tilew, tileh int, default largest size <= 16x16 that fits your input

  • If your tiles aren't sixteen by sixteen, define custom values here. Each
    must be a factor of the respective clip dimension.

res int, default 8

  • This acts as the effective bit depth of your output. The range of possible
    output values is broken up into 2 ** res steps, and each tile index or pixel
    component is rounded accordingly. This is quite an effective technique for
    RGB footage, but thanks to the way color is represented in YUV spaces, you
    won't be able to lower this too much with YUY2 or YV12 input before things
    begin to look strange.

mode integer, default 0

  • Only works when tilesheet is supplied. This option chooses the component
    that will serve as the tile index for a given tile. The possible values are
    as follows:

    0:
      RGB:   Average of red, green, and blue values
      YUY2:  Average of Y1 and Y2 in the current pixel pair
      YV12:  Average of all four Y values in the 2x2 block
    
    1:
      RGB:   Blue
      YUY2:  Y1
      YV12:  Top left
    
    2:
      RGB:   Green
      YUY2:  U
      YV12:  Top right
    
    3:
      RGB:   Red
      YUY2:  Y2
      YV12:  Bottom left
    
    4:
      RGB32: Alpha
      RGB24: N/A
      YUY2:  V
      YV12:  Bottom right
    
    5:
      RGB32: N/A
      RGB24: N/A
      YUY2:  N/A
      YV12:  U
    
    6:
      RGB32: N/A
      RGB24: N/A
      YUY2:  N/A
      YV12:  V
    

levels string, "pc" or "tv", default "pc"

  • Which range to use when selecting tiles. If you'd like to map TV black and
    white to the lowest and highest tiles in your tilesheet, respectively, use
    "tv" instead of the default "pc".

lotile, hitile default 0 and tilecount - 1

  • A quick way to limit the tile selection to a given portion of your
    tilesheet; if for example you have a sheet with an odd number of tiles, and
    some spaces are blank, or if you just want to use a smaller range of values
    without having to rebuild your tilesheet by hand, use these. If you don't
    use a tilesheet, these will instead control the maximum and minimum
    component values.

interlaced bool, default false

  • Enable for interlaced input. For those unaware, "interlaced" and "field
    based" are not the same thing. If a clip is field based, it's more than
    likely interlaced, but the reverse isn't true, and there's currently no
    completely fool proof way to auto-detect interlaced input.

CLUTer

CLUTer(clip c, clip palette, int "paletteframe", bool "interlaced")

c clip

  • No special restrictions, beyond ensuring that this clip's colorspace
    matches that of your palette. RGB32, RGB24, YUY2, and YV12 are supported.

palette clip

  • Must be the same colorspace as the input clip. Progressive chroma siting is
    assumed for YV12 palettes; although 'c' will be treated as interlaced if the
    appropriate option is enabled, the palette itself will always be read as if
    progressive.

    CAUTION! It is very, very easy to dramatically slow down the operation
    of CLUTer, to such a degree that it may appear to be frozen. The short
    version: stick with ~100 or fewer unique colors per palette, or you're in
    for a long wait. If you want to use an image as your palette, run it through
    TurnsTile first, with big tiles and/or a lowered 'res'.

paletteframe int, default 0

  • Only one frame is used from any clip you pass in as your palette, so if you
    don't want to use the colors of frame 0, set paletteframe accordingly.

interlaced bool, default false

  • As explained above, the terms "field based" and "interlaced" are not
    necessarily synonymous. Reading the proper luma values for a given chroma
    sample requires knowing the nature of the input clip, and a user-defined
    parameter is the most reliable way to achieve that.

Extras

Included in the 'extras' directory is a set of tilesheets meant to serve as a
jumping off point for your own experimentation, along with the AviSynth script
used to generate them. It needs Gavino's GScript to make it work in Avisynth
2.6, but there are no other requirements.

CGApalette.avs was introduced along with CLUTer() in version 0.3.0, and as
stated in the comments is meant to be loaded by AVISource as a sample palette
for that function. Open up the script to find more details.

Lastly, also in the extras folder is a copy of the script version of TurnsTile
0.1.0. Use in Aviysnth 2.6 requires GScript, along with GRunT, also by Gavino,
and doesn't run very quickly, to say the least. That barely measurable speed
was the motivation to develop this plugin, and the script is only included
here for educational purposes.

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A mosaic and palette effects plugin for Avisynth.

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