TrueCircuit Technology
An increasing number of broadcasters, production, and post-production houses are planning to use standard internet protocol (IP) networks to distribute video, audio, control, and metadata in realtime. Standard ethernet networks suffer from such problems as nondeterministic bandwidth, latency, and excessive jitter for reliable realtime transport of video and audio. Ethernet (IEEE 802.3) and packet switching have long been the underlying technology for computer networks, but are now barely used for voice and video communications. This is due to the unreliable and unpredictable nature of the so-called “best effort” service provided by IP networks, which results in a high degree of uncertainty in how quickly a packet will be delivered to its destination. New realtime internet protocols are being developed to guarantee a requested quality of service over an internet connection. However, even where implemented, they do not guarantee end-to-end delay or latency, only bandwidth. Without latency guarantees, IP networks will not truly be able to distribute realtime video and audio content.
- Print ISSN
- 0036-1682
- Published
- 2001-02
- Content type
- Original Research
- DOI
- 10.5594/J16491