Due to the iOS issues with stream, ie asking to sign in again or being told browser is not configured properly. Will reverting to using Office 365 instead be a viable solution in the short-term until Microsoft solves this issue.
I don't believe telling our users to turn off cross-site tracking is a viable solution for us.
Unless MS cannot address your iOS issues in support AND you have a strong/urgent need for video today I would not recommend using O365 Video. Stream is the future! Might as well be riding the go-forward horse.