Is it posible to mask a video on a mockup like this?

[Geo1212]

I would like to add a video inside a mockup. To make the effect of a live iPhone video playback.

Something like this:

This is my project. What I have done so far is creating a container, adding the mockup and the video. I need the video to be below the mockup, so it takes the iPhone shape.:

Hope you can help me!

Thanks,

---

Here is my site Read-Only: [LINK]1
(how to share your site Read-Only link)