Video overlay on a video

[Umity]

Hi, I know how to use MultilayerCompositingFilter and adding images over a video, with a preferred blend mode.

My question is, how can i use a video file as an overlay, with blending mode option, over a video. Lets say, I have a few seconds of snow overlay video file and I'd like to use it over a selected video file. Which method would be more appropriate?

Checklist

• I've read the README
• I've searched for existing GitHub issues

[YuAo]

• Create an AVComposition with two video tracks, one for the background, one for snowflakes.
• Create a MTIVideoComposition with that two-track asset, you can access the two tracks' images using request.sourceImages in the filter block.

[Umity]

Thank you, will try it on weekend