Weave
(clip)
Weave
is the opposite of SeparateFields
:
it takes pairs of fields from the input video clip and combines them together
to produce interlaced frames. The new clip has half the frame rate and frame
count. Weave uses the frame-parity information in the source clip to
decide which field to put on top. If it gets it wrong, use
ComplementParity
beforehand or
SwapFields afterwards.
All AviSynth filters keep track of field parity, so Weave
will always
join the fields together in the proper order. If you want the other order, you'll
have to use ComplementParity
,
AssumeTFF
or
AssumeBFF
beforehand or
SwapFields
afterwards.
From verions 2.5.6 this filter raises an exception if the clip is already frame-based.
You may want to use AssumeFieldBased
to force weave a second time. Prior versions did a no-op for materials that was
already frame-based.
WeaveColumns
(clip, int period)
WeaveRows
(clip, int period)
WeaveColumns
is the opposite of SeparateColumns
:
it weaves the columns of period frames into a single output frame.
The number of frames of the new clip is the ceiling of the number of frames of
the input clip divided by period. WeaveColumns is a relatively slow
filter due to the sparse pixel placing required by the algorithm. In some
applications it may be faster to use TurnLeft/Right with WeaveRows.
WeaveRows
is the opposite of SeparateRows
:
it weaves the rows of period frames into a single output frame.
The number of frames of the new clip is the ceiling of the number of frames of
the input clip divided by period. WeaveRows is a relatively quick
filter, typically costing 1 output frame blit.
$Date: 2013/01/06 13:38:34 $