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¿µ¹®Ç¥Áظí H.323 - Annex B: Procedures for layered video codecs
Çѱ۳»¿ë¿ä¾à º» Ç¥ÁØÀº H.323 Ç¥Áر԰ÝÀÇ ÇÁ·¹ÀÓ¿öÅ© ³»¿¡¼­ °èÃþÀûÀÎ ºñµð¿À ÄÚµ¦À» Áö¿øÇϱâ À§ÇÑ °³¼± »çÇ×À» ±â¼úÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à This Annex describes enhancements within the framework of the H.323 specification, to incorporate layered video codecs. The described procedure is scalable for multipoint conferences.
Layered video coding is a technique that allows the video information to be transmitted in multiple data streams in order to achieve scalability. These may provide bandwidth scalability, temporal scalability, SNR scalability, and/or spatial scalability. Annex O/H.263 describes the use of layered coding within H.263. Conferences can take advantage of this feature to service connected endpoints that have different capabilities, using one bitstream. This will allow more efficient use of network bandwidth.
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