The present disclosure provides methods and systems for synchronizing motion data with an audio/video stream. An audio/video stream, which comprises at least one timing marker, is obtained. The audio/video stream is processed to detect the at least one timing marker. Motion data associated with the audio/video stream and timing information for the motion data are obtained, the timing information including timing information regarding the at least one timing marker. The audio/video stream, with the at least one timing marker detected, and the motion data, are output with the timing information.