With such a short deadline, you might check the marketplace, there is some stuff, that deals with Camera mapping/Projection mapping.
Otherwise take a look at this thread here:
and scroll down to _Scribblers answer, that includes a download with a project for projection mapping. maybe this can help you.
A little bit further down is another solution, that seems to be an improved version, made by Dementium4ever. (his version on Github: https://github.com/ChristopherRemde/Projection_shadow )
Edit: Do Lightfunctions work with videos? A light with a video acting as a beamer should do it too. Because i saw this video here, where someone modified the light function blueprint to work with flipbooks. So maybe this might work with videos too:
