EXPERIMENTS WITH VIDEO TRANSMISSION OVER AN ASYNCHRONOUS TRANSFER MODE (ATM) NETWORK

We present end-to-end performance of digital coded video (JPEG, MPEG-1 , and MPEG-2) over a local asynchronuous transfer mode (ATM) network. We discuss performance in terms of both delay (jitter) and frame loss as a function of load. The experimental data reveal that the burstines s of the variable bit-rate-coded video streams degrades the performanc e significantly when the hosts and the network are stressed. Our resul ts show that traffic smoothing decreases frame loss significantly whil e maintaining acceptable jitter and loss bounds. We also discuss requi rements for system components, such as the network interface and switc h, which are necessary to support video services efficiently.