A stereoscopic video imaging system includes a first imaging apparatus and a second imaging apparatus coupled to the first imaging apparatus and arranged to take a 3D image. A single cable connects the first imaging apparatus to the second imaging apparatus. A switching device selects one of the first and second imaging apparatuses to be a main imaging apparatus and the remaining imaging apparatus to be a sub imaging apparatus. The main imaging apparatus is enabled to generate a synchronization signal, the synchronization signal being communicated to the sub imaging apparatus through the single cable.