I don't know how often recorded videos are viewed--conference committees have to wade through a lot of applications.
But conference presentations are basically public events and if that bothers you, you should probably reconsider doing one. (Yes, per parent, if there's a real disaster--and those happen--they may be deep-sixed but I wouldn't count on it.)
How common is that (outside of academia maybe -- which I have little familiarity with)?
Certainly when I've been on conference committees we tended to know a lot of the presenters and wouldn't have wanted to just rely on submissions. We knew who were experts on specific topics or were just good presenters.
But conference presentations are basically public events and if that bothers you, you should probably reconsider doing one. (Yes, per parent, if there's a real disaster--and those happen--they may be deep-sixed but I wouldn't count on it.)