Select
"Select" redirects here. For the switch-like control function, see Internal Functions: Select
Contents |
[edit] SelectEven/SelectOdd
AviSynth+
Up-to-date documentation: https://avisynthplus.readthedocs.io
SelectEven(clip clip)
SelectOdd(clip clip)
SelectEven makes an output video stream using only the even-numbered frames from the input. SelectOdd is its odd counterpart.
Since frames are numbered starting from zero, by human counting conventions SelectEven actually selects the first, third, fifth, etc, frames.
[edit] SelectEvery
AviSynth+
Up-to-date documentation: https://avisynthplus.readthedocs.io
SelectEvery(clip clip, int step-size, int offset1 [, int offset2, ...])
A generalization of filters like SelectEven and Pulldown. The easiest way to describe it is by example:
SelectEvery(clip, 2, 0) # identical to SelectEven(clip) SelectEvery(clip, 2, 1) # identical to SelectOdd(clip) SelectEvery(clip, 10, 3, 6, 7) # select frames 3, 6, 7, 13, 16, 17, 23, 26, 27, ... SelectEvery(clip, 9, 0) # select frames 0, 9, 18, 27, ...
And how about this:
# 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) Weave
[edit] SelectRangeEvery
AviSynth+
Up-to-date documentation: https://avisynthplus.readthedocs.io
SelectRangeEvery(clip clip [, int every] [, int length] [, int offset] [, bool audio])
Selects length number of frames every n frames, starting from frame offset.
int every = 1500
int length = 50
int offset = 0
bool audio = true
By default, select 50 frames every 1500 frames, starting with frame 0.
SelectRangeEvery will normally process audio. To keep the original audio, use audio=false.
Examples:
# Selects the frames 0 to 13, 280 to 293, 560 to 573, etc. SelectRangeEvery(clip, 280, 14)
# Selects the frames 2 to 15, 282 to 295, 562 to 575, etc. SelectRangeEvery(clip, 280, 14, 2)
[edit] External Links
- Deinterlacing BFF/TFF - which SelectEvery setting? (Doom9 Forum)