What Is Compressed Interactive Video?
A compressed interactive video system uses a CODEC device or card to digitally compress a standard video and audio signal so that it takes less bandwidth to transmit it. CODEC stands for Compression/Decompression. While this process has improved over the years, it still produces some noticeable effects upon the finished signal: • Delay A compressed video conference will have a delay of up to two seconds. This is caused by the compression and the transmission. Most instructors notice the delay when they tell a joke. The laughter of participants at the instructors site will be immediate, but laughter from the other sites will be delayed. Participants must keep the delay in mind, so that everyone can interact equally. • Reduced video and audio quality While the compressed video signal is a good one, there are still small differences in quality between compressed and standard video. For this reason, any video or audio presentations in the class should be easy to see and hear.
