Coship's CRM-9004D is a multistream mobile DVR that offers four-channel video input, real-time D1 recording, H.264 and MPEG-4 dual encoding. It also has three-stream output with independent recording and networking; this enhances mobile network transmission. Overlapping information includes vehicle ID, time, GPS and channel ID. It comes with multi-channel simultaneous playback,and each channel is controlled independently by powerful tools for video analysis and evidence collection.