Broadcast Applications of 4:2:2 MPEG
Professional broadcasting applications of digital processing technology have been proceeding well for the last decade. The agreement of the fundamental standard for the so-called “4:2:2” studio signal coding—ITU-R Recommendation 601—began a continuing process of development within studios and in contribution and distribution. During the late 1980s, high-performance video and audio compression systems based on the 4:2:2 standard were developed for use in contribution and distribution. Some of these were standardized by ITU-T and in Europe by the European Telecommunication Standards Institute (ETSI). These systems were based on high bit rates, typically 140 Mbits/sec or 34 to 45 Mbytes/sec, required by the compression algorithms available at the time. Technology has moved on, and the MPEG standard can achieve remarkable results at lower bit rates, typically in the range of 5 to 20 Mbits/sec, which is sufficient to support the needs of contribution and distribution applications.
- Print ISSN
- 0036-1682
- Published
- 1998-07
- Content type
- Original Research
- DOI
- 10.5594/J04439