First try and copy files from your camera roll to the cloud or other external storage to free up space.

Next free up memory used by Vaptur by sharing to iCloud.  If iCloud is not available for sharing from Vaptur, try sharing to the Camera roll so you can then save the videos from the camera roll to your computer or other external storage.

Once the video is shared to the Camera roll (confirm this by playing it from the Camera roll), you can then delete the video from Vaptur by swiping from right to left over the video name as it is listed in the file list then select delete.

You need at least 5% of your device memory available for recording with Vaptur .