Premiere Pro scripting keyframe interpolation

[MrDruz]

Hi to all.
I'm struggling with adding keyframe interpolation in PP.

here is simplyfied code below, I want to interpolate a keyfreme, there are several types of interpolation, but I can't make it work with any of them.

var position = app.project.activeSequence.getSelection()[1].components[1].properties[0];
var currentTime = app.project.activeSequence.getPlayerPosition();
position.setTimeVarying(true);
position.addKey(currentTime);
position.setValueAtKey(currentTime, [0.5,0.5]);
position.setInterpolationTypeAtKey(currentTime, kfInterpMode_Bezier,1);

this script adding a keyframe but at last line it gives me an error.
HELP!!!

[Bruce Bullis]

Probably a documentation bug. [Mea culpa.]

In the PProPanel sample, I see:

var KF_Interp_Mode_Bezier = 5;

Try passing '5' instead of "kfInterpMode_Bezier".

[MrDruz · Accepted solution]

Thank you, Brusce, that helped.
Here is code which gave me eased key:

var position = app.project.activeSequence.getSelection()[0].components[1].properties[0];
var currentTime = app.project.activeSequence.getPlayerPosition();
position.setTimeVarying(true);
position.addKey(currentTime);
position.setValueAtKey(currentTime, [0.5,0.5]);
var interpol = 5;
position.setInterpolationTypeAtKey(currentTime, interpol,1);

Also if I set var interpol = 4; it give me hold keyframe.
interpolation 1, 2, 3, marked as obsolete didn't work for me.

[Bruce Bullis]

Here are valid values, defined in PProPanel (I also cheated, and looked at our source; these are used):

[MrDruz]

Amazing, thank you!
Can you tell what #6 (time mode) is doing? When I tried it, my PP crashed)

[Bruce Bullis]

6 = Auto crash mode? 😉 

I'll have a look...

[Plugin Play]

Hey @Bruce Bullis ! Just following up here. Is there a way to provide a custom bezier curve instead of just setting the interp mode?

[Bruce Bullis]

No.