Change your Video Recording Settings

In iOS you can change the quality of the video your device records, which is essential if you're planning on uploading to an online platform, as many if not most have a maximum file size of 500 MB, at 1080p you'll easily exceed that just a few minutes of video, you can resize it afterwards, but... that's a hassle, why not reduce the size of the videos you record, as you record them?

At the default recording setting of 1080p you can eat up a load of storage space, and struggle when trying to share it online, when even 10 seconds of video could be 100MB- that's HUGE.

My advice? Change it to 720p, that's more than enough; here's how:

Settings > Camera > 720p