Is there any limit on video length on iPhone?

Is there any limit on video length on iPhone?
I want to shoot some plant growing for 24 hrs, but it means leaving my phone in my room all day… I really don't want to do is and then find out something like "Video reached limit" or something lke that.
Assuming I'm putting it on airplane mode and shut off all communications (Wi-Fi), would it work?

Apparently the limit is 49m:51s. Don't know if that has changed on later generations of the iPhone though.