Since*
3.4
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.
The doubleweave works same as weave but without
halving frame rate and 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