How do I download videos from my iPhone onto my computer?

-My computer's a mac desktop if ever the type if computer affects the way to dowload them.1. Connect the iPhone, iPad, or iPod touch to your computer. iPhoto should automatically launch into its import window with your device's images and videos listed.

2. Select the images and videos you would like to import into iPhoto, then select the "Import Selected" option.
is ur iphone jailbroken? because then you could ssh it in. or if its not you might be able to use iPhoneExplorer. idk where the videos are stored in your iphone tho, try looking it up on google.
i usually use imedia transfer for Mac.