Video works just fine if you use Camera Zoom FX, cannot comment on other cam apps. One thing that does NOT work with any camera app I've tried Is automatic flash. It works to focus the scene, but fails to flash when the pic is taken. Workaround is to use flashlight mode for the flash when taking pics in the dark.
I couldn't get Camera Zoom FX to work, it says that it can't access the camera just like the factory app does.