Most of the settings here are self-explanatory. It is worth mentioning that not every combination of encoder and resolution works properly on all devices. If you have at least Android 2.2 installed, the default parameters are automatically determined, and you can choose between high, low and custom quality settings.
Video retention - what g-force is necessary to trigger the app to retain the latest video sequence. It is recommended to leave this setting at the lowest g-force (3 or 4) which doesn't cause repeated retain operations on bumpy roads. Only sudden stops and accelerations (indicating a possible crash) should trigger this, but the accelerometer sensitivity might be different in various devices.
Only retain - besides automatic retain (as triggered by the accelerometer), you can also touch the screen during video recording to indicate that something interesting happened. In both cases, the latest video sequence is saved into a safe zone, away from automatic cleanup. It is recommended to retain at least the latest 2 files, because the latest file may have reached only to a few seconds when you stopped recording.
Settings: General
Settings: Photo