The hook in the first second, the loop you want to share.
For the multi-platform account that cross-posts the same cut to Reels, Shorts, and TikTok. You do not have a "channel format" — you have a hook that has to work everywhere. AutoAE is the 10-second motion snippet you stack in front of your camera roll: thumb-stop in second one, payoff before the bounce. If you only post on YouTube long-form or only on TikTok, there is a sharper page for you.