Decomb/FieldDeinterlace

From Avisynth

Form Decomb Plugin for Avisynth 2.5 (Version 5.2.3) Reference Manual

FieldDeinterlace(): This filter provides functionality similar to the postprocessing function of Telecide. You can use it for pure interlaced streams (that is, those not containing telecined progressive frames). (The name refers to the fact that field mode differencing is used.) Do not use FieldDeinterlace after Telecide because the same functionality is built into Telecide.

FieldDeinterlace provides an option that allows you to specify whether all frames are to be deinterlaced or whether just frames detected to be combed are deinterlaced.

FieldDeinterlace(parameter_list)

• full (true/false, default true) chooses whether to process all frames or just the frames that are detected as combed. Use full=true to process all frames.

• threshold (0-255, default 20) sets the combed frame detection threshold. When running with full=false, you may want to increase this value if too many good frames are being deinterlaced, or reduce it if small combed areas are not getting caught. The default is a good general purpose value. Note that this threshold determines whether a frame is considered combed and needs to be deinterlaced; it is not the threshold you might be familiar with in Smart Deinterlacer. That threshold is determined by dthreshold (below); it is the threshold for deinterlacing the frames detected as combed. When full=true, threshold is ignored, but dthreshold remains functional.

• dthreshold (0-255, default 7) sets the threshold for deinterlacing frames detected as combed. Note that this threshold is the threshold you might be familiar with in Smart Deinterlacer.

• blend (true/false, default true) enables blending instead of interpolating in combed areas.

• map (true/false, default false) enables display of the combing detection map (motion map). If full=true, the map is shown for all frames. If full=false, the map is shown only for frames detected as combed; non-combed frames are displayed normally. The map shows combed areas as bright cyan; non-combed areas are copied from the source frame and blended with gray.

• chroma (true/false, default false) determines whether chroma combing is included in the decision made during postprocessing as to whether a frame is combed or not. If chroma=true, then chroma combing is included, otherwise it is not included. Note that chroma is always deinterlaced; this parameter affects only the decision about whether a frame is combed. It is useful for clips which have a large amount of luma/chroma interference, as might result from a poor comb filter. The interference can cause frames that are not combed to be detected as combed when chroma=true. By setting chroma=false, the effect of the interference can be eliminated. This option has no effect when full=true because all frames are considered combed.

• ovr (string, default "") enables specification of an overrides file (see the section above called "Overriding Decomb Decisions"). The file must be in the same directory as the script file (the Avisynth current directory) and the filename must be enclosed in quotation marks, e.g., ovr="tango.fd".

• show (true/false, default false) enables metrics to be displayed on the frame to assist with tweaking of thresholds. Also displays the software version.

debug is the same as described for Telecide.