Premium Multimedia theme vs. photo theme

HI

I am thinking of purchasing a theme for a website that will showcase videos.

I plan to use a clean layout photographic-type theme where you can click on the image to open the video clip.

Would the process of embedding videos be the same as embedding images and would such a theme normally lend itself well to the task of being used as a video site rather than photo-based site? i.e would there be technical or loading speed issues I should be aware of?

any feedback appreciated.