I want to make a short clip to introduce my app on the web and need to make the scene to show how the app works on your real device.
If you only need the pure digital image on the screen you can screen-capture the emulator window with certain kind of freeware, but to show how to operate by your finger and how the accelerometer works you have to shoot the real device by video camera.
It's not easy to hold the device steadily (to use accelerometer you have to hold it floating from the ground) and cast the light without undesirable reflection.
Hmm...