TimeX

Function

This applies a rule to change timing on the input clip. By default, the value is time, which means that at the current frame, it uses the current frame, or no change. However, by modifying the formula, you can get interesting effects.

Like Lookup and ColorX, you can duplicate most other Time functions with TimeX. These other functions are, generally, just macros with TimeX in them. The other functions were made becomes sometimes TimeX is counter-intuitive. Here are some examples mimicing the other functions.

Time function
TimeX equivalent
time-10
101-time
time%10+1
time>10?10:time
Explanation This shifts the clip 10 frames forward. While processing frame 50, it will read input frame 40. This assumes frame 100 is the last frame. At frame 1, 100 used. Loops every 10 frames. This takes the remainder of time/10, and adds 1 (otherwise frame 10 = 0). Freezes the clip at frame 10. Any frame before that is processed normally.

other functions
Do nothing
Pick 1 frame
double the rate
Speed the clip up and down.
TimeX equivalent
time
100
time*2
"CSpline(0,
1@1,
30@25,
40@50,
90@75,
100@100
)"
Explanation   At every frame, the node returns 100, so only input frame 100 is used. At frame 10, frame 20 is used. This arbitrary curve returns different frame values. You can use any spline type, with as many keyframes as you want.

Another more complex example would be to animate 360 3D frames with an animated light. The light is from the right at frame 0, from the top at frame 90, from the left at frame 180, etc. You then position a fake light source in the composite. By figuring out the angle of the light to the 3D element (using trigonometry), you can pick one of the 360 input frames to fake the lighting change.

Parameters
Type
Default
Function
newTime
float
time
These set the first and last frames to be taken as the clip length
newInPoint int inPoint These apparently do nothing at the moment...
newOutPoint int outPoint  

Synopsis

image TimeX(image, float time );

Script

image = TimeX( image, time );

Command Line

shake -timex time

See Also
Repeat, Cycle, Freeze, TimeShift