Sunell Technology, a leading surveillance camera supplier in China, focuses on developing network transmission technology. With more advanced and mature H.264 compression technology, Sunell launches its latest H.264-SVC product line, offering the market a top-notch solution.
Scalable video codec (SVC) is the name of an extension, Annex G, of the H.264/MPEG-4 AVC video compression standard. H.264/MPEG-4 AVC was developed jointly by ITU-T and ISO/IEC JTC 1. These two groups created a Joint Video Team to develop the H.264/MPEG-4 AVC standard.
"The objective of the H.264-SVC standardization was to encode a high-quality video bit stream," said Helios Ren, Technical Support Manager at Sunell. "It contains one or more subset bitstreams that can be decoded with a complexity and reconstruction quality similar to that achieved using the existing H.264/MPEG-4 AVC design with the same quantity of data as in the subset bitstream. The subset bitstream is derived by dropping packets from the larger bitstream."
Sunell's new H.264-SVC network camera features video streaming at 30 frames per second, and 1.3 megapixel resolution. The camera offers G.723.1audio codec as well as optional M-JPEG compression. It supports different options for output resolution and frames rate with its outstanding bit rate. Video analytics are embedded in the camera, along with wireless transmission and 10/100 Ethernet.
"It is a powerful platform. Encoding 30 frames D1/s to H.264-SVC stream only needs its 30 percent computing power," said Martin Yang, Technical Director at Sunell. "Besides H.264-SVC encoding, the platform can support video analysis simultaneously."
The best advantage of H.264-SVC is it can automatically adapt to various network environments, and different clients can retrieve the appropriate video stream they need. For example, NVRs in local LAN can get high resolution image up to 1,280 by 720 or lower resolution such as D1 or CIF to save storage spaces. And for narrow network bandwidth, such as 3G cell phone can get frequent CIF or QCIF videos.Ren said H.264-SVC is a solution to the problems posed by modern video transmission systems. The following video applications can benefit from SVC, including streaming, conferencing, surveillance, broadcast and storage.
Sunell, as one of the leading organizations in Chinese security, introduced the first network camera and hybrid DVR within-house H.264-SVC patented technology. "We foresee the potential of the H.264-SVC application in the near future," Yang said. "As an innovative surveillance camera supplier, we would like to keep our position ahead of the industry. The H.264-SVC network camera and hybrid DVR give Sunell an edge."