Recovering Deleted Video from Full iPhone Storage

If your iPhone is out of space and you made a video, you likely can't recover it as it wouldn't have anywhere to be saved to. You can open your Photos App and look in the Recently Deleted folder, but if it's not there, it didn't save as it couldn't save. You need to remove things on your phone to free up space, such as Photos, Videos, Apps, Music, Files, Messages, Email, etc. Phones which are out of memory, often don't work well, can freeze and even shut down on you.

Maybe it's time to consider a new iPhone with more memory as clearly the phone you own doesn't meet your memory needs.