Hi this is for a personal project and would like to achieve a filter similar to the filter shown in this video but not exactly the same just using the same technique of blending something over the top but I'll use a different image to the film frame....
Please help, any advice could be extremely helpful
That's achieved using the blending modes. You lay one image/video over another and choose one of the blending modes to get them to mix together. If you don't see the blending modes, press F4, and they should come up. Also pressing shift+ (plus/minus key) lets you toggle through them quickly. Using multiple modes and changine the opacity of the modes can dramatically change the look completely.
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.