zoneplate

Generate a zoneplate test video pattern.

This source accepts the following options:

size, s

Set frame size. For the syntax of this option, check the (ffmpeg-utils)"Video size" section in the ffmpeg-utils manual. Default value is "320x240".

rate, r

Set frame rate, expressed as number of frames per second. Default value is "25".

duration, d

If not specified, or the expressed duration is negative, the video is supposed to be generated forever.

sar

Set the sample aspect ratio of the sourced video.

precision

Set precision in bits for look-up table for sine calculations. Default value is 10. Allowed range is from 4 to 16.

xo

Set horizontal axis offset for output signal. Default value is 0.

yo

Set vertical axis offset for output signal. Default value is 0.

to

Set time axis offset for output signal. Default value is 0.

k0

Set 0-order, constant added to signal phase. Default value is 0.

kx

Set 1-order, phase factor multiplier for horizontal axis. Default value is 0.

ky

Set 1-order, phase factor multiplier for vertical axis. Default value is 0.

kt

Set 1-order, phase factor multiplier for time axis. Default value is 0.

kxt, kyt, kxy

Set phase factor multipliers for combination of spatial and temporal axis. Default value is 0.

kx2

Set 2-order, phase factor multiplier for horizontal axis. Default value is 0.

ky2

Set 2-order, phase factor multiplier for vertical axis. Default value is 0.

kt2

Set 2-order, phase factor multiplier for time axis. Default value is 0.

ku

Set the constant added to final phase to produce chroma-blue component of signal. Default value is 0.

kv

Set the constant added to final phase to produce chroma-red component of signal. Default value is 0.