Since*
3.2
The weave takes a field-based video input and join
each two sequential fields into single frame, producing a new double
height clip with half the frame rate and half the frame count.
It accepts the following option:
- first_field
-
Set first field. Available values are:
- top, t
-
Set the frame as top-field-first.
- bottom, b
-
Set the frame as bottom-field-first.
Examples
-
Interlace video using select and separatefields filter:
separatefields,select=eq(mod(n,4),0)+eq(mod(n,4),3),weave