SelectEvery¶
SelectEvery returns a clip with only some of the frames in every step_size selected. SelectEvery is a generalization of filters like SelectEven and Pulldown.
Syntax and Parameters¶
SelectEvery (clip, int step_size, int offset1 [, int offset2 [, ...]])
- clip
Source clip.
- step_size
The number of frames in the pattern.
- offset
The offset(s) into the step to select a frame. If omitted it defaults to 0.
Examples¶
Return even numbered frames, starting with 0:
SelectEvery(clip, 2, 0) # identical to SelectEven(clip)
Return odd numbered frames, starting with 1:
SelectEvery(clip, 2, 1) # identical to SelectOdd(clip)
Select frames 3, 6, 7, 13, 16, 17, ... from source clip:
SelectEvery(clip, 10, 3, 6, 7)
Select frames 0, 9, 18, ... from source clip:
SelectEvery(clip, 9, 0)
Fixed pattern 1 in 5 decimation, first frame in every step_size removed:
SelectEvery(clip, 5, 1, 2, 3, 4)
Duplicate every fourth frame:
SelectEvery(clip, 4, 0, 1, 2, 3, 3)
Take a 24fps progressive input clip and apply 3:2 pulldown, yielding a 30fps interlaced output clip:
AssumeFrameBased()
SeparateFields()
SelectEvery(8, 0, 1, 2, 3, 2, 5, 4, 7, 6, 7) # standard NTSC-Film telecine pattern
Weave()
$Date: 2022/02/06 21:28:07 $
