Working with HD video, even in seconds, adds up.
A lot of factors go into play with the total amount of free space needed. Like longer snippets, two snippets a day, etc., but a good rule of thumb is that for a year of 1SE you need to have around 3Gb of free space on your device. The final file will be smaller, but our app needs space to build that file.
Here's a handful of tips from the 1SE community:
You don't need to keep all your original videos you grabbed a second from. Delete those bad boys and a bunch of space will free up!
Be mindful of keeping a bunch of projects. Like Freestyles of trips or weddings. Mash those to have the keepsake and delete the projects to save space.
Consider using Apple's clean-up unused apps options in your settings to remove old bloated apps you've forgotten about