Video time

I have a video that is 31 minutes in length that I would like to put up on my squarespace site. An error pops up that says video can only be 30 minutes even though it says I have 5 hours of video space left.

Does each video have a 30 minute time limit?

I prefer not to use youtube as they made some changes and you can't effectively get rid of recommended videos/playlists currently.

Yes it does !

https://support.squarespace.com/hc/en-us/articles/206542397-Adding-videos-to-your-site