It looks like your usbtv stick is not the only device with video capturing capabilities. That might be confused for Raspbian OS. Did you enable builtin Camera hardware input (it is not necessary for USB capturing devices)?
There is a config option in openauto_system.ini file called [RearCamera] DeviceIndex where you can select default capture device. Please try to set value from 0 to 3 (OpenAuto Pro needs to be restarted after change) and see if that helps.
There is a config option in openauto_system.ini file called [RearCamera] DeviceIndex where you can select default capture device. Please try to set value from 0 to 3 (OpenAuto Pro needs to be restarted after change) and see if that helps.