AP Photo

The camera is some of the most valuable real estate on your smartphone. Take Instagram, which became the dominant photo app on iPhone, thanks to its combination of ease-of-use, stimulating filters, and passionate community. That victory was worth close to a billion dollars. A similar battle is now being waged to own the video-shooting functionality in your smartphone, but as it turns out, mastering video-sharing is a little trickier. Files are gargantuan in size compared to photos, and audio — a key feature of video — can’t be polished up easily by an Earlybird filter. While Instagram can make your subpar photos look chic, market-leading video sharing apps Socialcam and Viddy have trouble rescuing your clips from amateurish cinematography skills.