Two-channel coding for packet video transmission

A method is described which uses a form of subband coding which is efficient and simple, satisfies some of the most likely constraints of packet networks, and exploits some of their features. Results are reported on the application of the method to broadcast-quality moving pictures and to videoconference or videophone pictures. Simulation results have shown the method to be very attractive both for high bit rate (a few tens of megabits per second) and low bit rate (some hundreds of kilobits per second) in terms of performance. The method has some features that recommend it in case interworking between different networks is required (e.g. between LANs and ISDN), and it is well matched to the current standardization plans of the CCITT.<>