IT

Latest revision as of 15:22, 5 June 2020

[edit] Description

IT is an inverse Telecine plugin, its official name is IT_YV12, it's the continued development of IT v0.051 by thejam79.

[edit] Requirements

• AviSynth 2.5.8 or greater
• Supported color formats: YUY2, YV12
• MMX2 capable CPU is required.
• Width must be a multiple of 16, height must be a multiple of 8.

[edit] Syntax and Parameters

IT (clip, int "fps", int "threshold", int "pthreshold", string "ref", bool "blend", bool "debug", string "read", string "write", string "log", int "dimode")

clip   =

Input clip.

int  fps = 24

• 24 : frame-matching and decimation to 24FPS (IVTC)
• 30 : frame-matching only, leaves the frame rate unchanged

int  threshold = 20

int  pthreshold = 75

Undocumented parameters.

string  ref = "TOP"

Field order:

• "ALL"
• "AUTO" : automatic
• "TOP" : top field first (default)
• "BOTTOM" : bottom field first
• "NONE"

bool  blend = false

Set blend to true or false depending on whether you want any remaining interlaced frames to be deinterlaced by blending or interpolation. This parametter is only valid when fps=24.

bool  debug = false

Set to true to show debug information.

string  read = NULL

string  write = NULL

string  log = NULL

Read and write logs.

int  dimode = 1

Deinterlace mode:

• 0 : none (leaves frames combed)
• 1 : deinterlace (may produce some jagged lines in animation)
• 2 : simple blur (simply blend; may produce some slight ghosting in high motion areas)
• 3 : one field (compensate fields; very similar to mode 1 but less jagged edges)
• 4 : end
• 5 : deinterlace b

[edit] Examples

IT with default values:

MPEG2Source("telecine source.d2v")
IT(fps=24, threshold=20, pthreshold=75, ref="TOP", blend=false, debug=false, dimode=1)

[edit] Changelog

Version              Date            Changes

v0.1.03_width8K      2013/11/30      - change max width to 8192
                                     - x64 version compiled with Intel C++ Composer.
v0.1.03              2003/07/12      - diMode: mode 2 and 3; change internal processing.
v0.1.02              2003/05/05      - diMode: add mode 3
v0.1.01              2003/05/04      - add diMode parameter
                                     - Support AviSynth 2.5 and YV12 colorspace
v0.051               2002/09/06      - Last release by thejam79 (AviSynth 2.0 plugin)

[edit] Archived Downloads

[edit] External Links

• Doom9 Forum - Is (IT) the IVTC plugin available for 2.5?
• Doom9 Forun - Explanation of blend and diMode parameters.
• avisynth.org - IT English documentation.
• Niiyan - Extensive IT documentation in Japanese.
• GitHub - IT VapourSynth port.

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