updated 03:40 am EDT, Fri April 13, 2001
Sorenson Media has quietly posted a beta of Sorenson 3 Pro b5, a new version of the company's codec that is expected to be "released approximately the same time that Apple Computer releases QuickTime 5." The company says the new codec, which expires at the end of the month, has substantial improvements over the previous Sorenson Video 2 codec, including...
- Sorenson Video 3 offers higher quality video than Sorenson Video 2 at the same bit rate. In our analysis, Sorenson Video 3 has the same quality as Sorenson Video 2 at 50 to 66 percent of the rate of Sorenson Video 2.
- Sorenson Video 3 compresses video twice fast as Sorenson Video 2 and three times as fast when using the popular VBR (Variable Bit Rate) feature.
- Sorenson Video 3 provides enhanced watermarking for full color watermarks; Sorenson Video 2 only supports gray scale watermarks. Sorenson Video 3 also allows for an arbitrary alpha plane to be associated with the watermark so that any combination of opacity will be supported.
- The media key feature in Sorenson Video 3 has been enhanced for secure encryption.
- Sorenson Video 3 includes support for binary alpha channel and chroma key segmentation. This allows for weatherman-type video where the object is extracted from a background and blended with a new one.
- Sorenson Video 3 improves the quality of streaming video when there is packet loss.
- All of the other features of Sorenson Video 2 have been maintained. Thank you for your interest in reviewing the Sorenson Video 3 Professional Edition Beta!