I cannot send a video via messenger it is 4 minutes long

Hello and welcome to Apple Support Communities, ImageOpus!

I understand you're having trouble sending a video via Messages. I'd be happy to provide information to help you address this.

Try the steps in the following article: If you can't send or receive messages on your iPhone, iPad, or iPod touch

If the issue continues, please let us know if you see any error messages.

However, if you mean the issue is with Facebook Messenger, you'll want to work with them to solve the issue:

How to contact an app developer

Have a great day!

Messenger or Messages?

There is a difference.

Messenger is a Facebook product / service.

Again, Messenger or Messages?

"Message" is not one of the options.