Kevin Systrom (born December 30, 1983) is an American computer programmer and entrepreneur. He co-founded Instagram, the world's largest photo sharing website, along with Mike Krieger.

From the Instagram feed, click on the video you want to save in the phone's camera roll. Click on the three dots at the bottom of the video and click on “Save to Camera Roll” from the pop-up menu. The video will be saved in the camera roll.