1. A method of transmitting video information over a network comprising: temporarily storing a full resolution video signal in a frame buffer; filtering the full resolution video signal by passing said full resolution video signal from the frame buffer through a filter bank to a series of buffers containing sub-banded video signals, said filter bank including pairs of high pass and low pass filters arranged in a cascaded arrangement, each pair of filters being followed by a downsampler, said filter bank being configured such that at least one of the sub-bands constitutes a base sub-band representing a video image of reduced resolution and additional sub-bands carry higher resolution information; passing the sub-band video signals through respective separate code operating independently of each other to encode the sub-bands in parallel into a series of encoded sub-bands for transmission as separate video streams over the network; and transmitting at least the encoded base sub-band to a far end endpoint to permit video reconstruction at the far end endpoint at a degree of resolution dependent on the number of sub-bands used to reconstruct the video image.