You can download videos directly from Dropbox to Camera Roll on iPhone or iPad, so you can play the videos offline anytime you like. Dropbox is changing fast, you may have to use different ways to export videos from Dropbox to your iPhone or iPad devices.
Download Videos from Dropbox to Camera Roll
If you are using the latest version of Dropbox for iOS, you can download any videos from Dropbox to Camera roll on iPhone or iPad in just three easy steps.
Run the Dropbox app on your iPhone or iPad. Sign in your Dropbox account if not yet. Then browse to your video folder. Once you see the video list, tap the Menu(three dots icon) besides the video name to show more options.
The menu options will display at the bottom half of your phone screen. To download videos from Dropbox to Camera Roll, click the Save video button to instantly export video from Dropbox and save to your iPhone Camera Roll or photo library. If you are prompted to grant Dropbox the access to your Photos, make sure to allow it.