Dropbox provides online backups automatically for photos, videos and files in the Dropbox account. Dropbox has a "File Sync" feature which allows you to sync all your devices with your Dropbox account. Once you added photos and videos, they will sync with your Dropbox account on your computer and all other devices. Dropbox allows you to add other types of files by using the iOS 'Open In' menu. To do this, open iOS email app, go to the email and then tap the file name. Tap arrow icon located at the top right corner on the screen. Select 'Open in Dropbox' option. When you tap this option your file will open in Dropbox. Tap 'Save' button and rename the file and then select a specific location to save it.
You can install PicBackMan's Dropbox uploader for Mac from the website and start backing up photos and videos.