While Chromecast users still have to rely on third party apps to stream photos from their smartphone to the TV, today Google released an iOS app called Photowall for Chromecast that allows one or a group of friends found in the same room to beam their photos to the big screen TV. The photos are arranged and animated on the same screen. User can annotate, doodle with colors before sending to the wall.
Upon completion, optionally users can have the app automatically create a YouTube video from the Photowall with music background (you can swap it out if you want. Preview some tracks from a selection the team has chosen just for your Photowall.. The video will be set private first and uploaded to user Google+ account. Follow these quick steps to make it public.