Maybe downloaded content as an extra metric to track views. Also it is harder to fake thousands of views if you have to download it every time. Managing cache

Maybe downloaded content as an extra metric to track views. Also it is harder to fake thousands of views if you have to download it every time. Managing cache in my opinion is also complicated. For how long will should it last? Will you delete it on finish/page close? Or will ppl accept watching yt will take a big chunk of space, and disk performance? What if the browser crash? In mobile it would not be possible.