I can't save videos due to insufficient storage space

When saving videos, you can check the "Estimated video size" on the [Share or Save] page.

To save videos successfully, the device needs enough storage space to hold the estimated video size. Therefore, please try saving videos after freeing up enough storage space.

How to Free up Storage Space

1. Clear the cache from the [Settings] > [Clear Cache] menu in the VDIT app to free up space.
2. Delete the unnecessary apps from the Settings > General > iPhone Storage menu.