Deinterlace the input video ("estdif" stands for "Edge Slope Tracing Deinterlacing Filter").

Spatial only filter that uses edge slope tracing algorithm to interpolate missing lines. It accepts the following parameters:

mode

The interlacing mode to adopt. It accepts one of the following values:

frame

Output one frame for each frame.

field

Output one frame for each field.

The default value is field.

parity

The picture field parity assumed for the input interlaced video. It accepts one of the following values:

tff

Assume the top field is first.

bff

Assume the bottom field is first.

auto

Enable automatic detection of field parity.

The default value is auto. If the interlacing is unknown or the decoder does not export this information, top field first will be assumed.

deint

Specify which frames to deinterlace. Accepts one of the following values:

all

Deinterlace all frames.

interlaced

Only deinterlace frames marked as interlaced.

The default value is all.

rslope

Specify the search radius for edge slope tracing. Default value is 1. Allowed range is from 1 to 15.

redge

Specify the search radius for best edge matching. Default value is 2. Allowed range is from 0 to 15.

interp

Specify the interpolation used. Default is 4-point interpolation. It accepts one of the following values:

2p

Two-point interpolation.

4p

Four-point interpolation.

6p

Six-point interpolation.