The File Driver Sample demonstrates how to implement a Driver which uses the External Camera features that provides frame data to Vuforia Engine. The File Driver sample can be downloaded from the Developer Portal. The sample loads a sequence of pre-recorded camera frames from device storage and feeds the frame data into Vuforia Engine one frame at a time. The package includes two sets of frame sequences. One set with the Stones Image Target and another set with the Astronaut Image Target. Native developers should use the sequence containing the Stones Image Target while Unity developers should use the Astronaut Image Target sequence.