On Android, iOS, and Windows Phone, you can choose to enable the Camera Upload feature. Camera Upload will sync your device's photo library, in almost real-time, as you capture picture and video.
When enabled, photo and video from your device will be uploaded to a Camera Uploads folder in Vault.
To activate Camera Upload, open the Nimbox app, click Settings > Camera Upload > then Enable camera upload.
You can now choose to sync videos, and upload files in the background. Selecting this option will allow the Nimbox app to upload files from your photo library, even when the app is closed: