Time Scale compositing node

Stretches or compresses a sequence in time.

All

Parameters

Local variables

This operation stretches or compresses a sequence in time. Frames are either dropped, doubled or interpolated. If interpolation is not used, this operation will not use any cache memory.

Parameters

Scale Method

Select a method for changing the timing.

Modify Sequence Length Only	Changes the length of the sequence without changing the frame rate; the sequence will be longer or shorter in time.
Modify Sequence Length, Same	Changes the length of the sequence Time Span and adjusts the frame rate so the sequence is the same time length.
Modify Frame Rate Only	Only changes the frame rate. The sequence becomes longer or shorter, but the number of frames stays the same.
Modify Frame Rate, Same Time	Changes the frame rate and increases Span or decreases the number of frames to keep the sequence the same time length.

Interpolation

When increasing or decreasing the number of frames in the sequence, this parameter determines the frame(s) to use for the output frames.

Previous Frame	Uses the input frame exactly at or before the time of the output frame.
Closest Frame	Uses the input frame exactly at or closest to the time of the output frame.
Next Frame	Uses the input frame exactly at or after the time of the output frame.
Blend Nearest Frames	Picks the 2 closest frames and linearly blends them together, weighting them with how close each input frames' time is to the output frame.

Frame Rate

The frame rate, for methods that require it.

Length Method

Specifies how to changes the length of the sequence, for Scale Methods that require it (see below).

Length Scale

Changes the length of the sequence by a scale factor. Scales greater than 1 increase the length, scales less than 1 decrease it.

Sequence Length

Specifies the new length of the sequence, in frames.

Length Difference

Specifies how many frames to add or subtract from the input sequence length.

Local variables

L	Sequence length
S	Start of sequence
E	End of sequence
IL	Input sequence length
SR	Sequence frame rate
NP	Number of planes in sequence
W,H	Width and height of image
I	Image index (0 at start frame)
IT	Image time (0 at start frame)
AI	Current plane array index
PI	Current plane index
PC	Num of channels in current plane
CXRES	Composite Project X resolution
CYRES	Composite Project Y resolution
CPIXA	Composite Project pixel aspect ratio
CDEPTH	Composite Project raster depth
CBP	Composite Project black point
CWP	Composite Project white point

Usages in other examples

Example name	Example for