How to Add Mosaic Effect and Adjust Ellipse Mask Position Using ExtendScript in Premiere Pro?

[skilled_Star6150]

Hi everyone,

I’m developing an ExtendScript for Adobe Premiere Pro and I need help with the following:

1. Adding the Mosaic effect to a selected clip in the timeline.
2. Creating an ellipse mask inside the Mosaic effect (like manually clicking "Create Ellipse Mask").
3. Changing the position of the ellipse mask programmatically.

I’ve been able to access effects using clip.components, but I’m struggling to programmatically create a mask and modify its position.

• Is it possible to create an ellipse mask via ExtendScript?
• How can I change the position of the mask after adding it?
• Are there specific properties I should look for under the effect’s parameters?

Any guidance, sample code, or documentation references would be greatly appreciated.

Thanks in advance!

[bbb_999 · Accepted solution]

There is no supported ExtendScript API to either apply effects, or modify masks. You can likely change the position of a mask, via component parameter manipulation. 

[skilled_Star6150]

I couldn't find properties related to mask position or size under the Mosaic effect's parameters. How can I retrieve (get) or modify (set) the mask position and size?

[bbb_999]

As stated above: There is no supported ExtendScript API to either apply effects, or modify masks.