if the device provider couldn't be created
DeviceProviderFactory.get
gst.device_provider.DeviceProvider get() nothrowReturns the device provider of the type defined by the given device providerfactory.
Returns
the #GstDeviceProvider or null
gst.device_provider.DeviceProvider get() nothrowReturns the device provider of the type defined by the given device providerfactory.
if the device provider couldn't be created