Daniel S. Rice

Standard-based software-only video conferencing codec on Ultra SPARC

Even though CIF-resolution video decoding in software has become popular, as evidenced by the popularity of MPEG-1 software decoders, video encoding at CIF resolution still needs hardware solution, especially with motion estimation. In this paper, we report our work of a high-quality and high-performance software-only H.261 video codec, with real- time transport protocol packetization capability, for H.323 video conferencing over LAN. The codec is implemented entirely in software using Ultra SPARC multimedia instruction extension - visual instruction set or VIS. The encoder can perform in real time change detection, motion estimation, motion-compensated spatio-temporal pre-filtering for noise reduction and adaptive quantization. Thus high quality video can be obtained at rate of 128 Kbits per second or even at a lower rate. It is capable of performing simultaneous encoding and decoding of near CIF resolution video at 15 frames per second. The design of encoder structure, data layout, and various techniques and algorithms developed can be extended to H.263 codec.

OpenKODE: an open mobile media development environment

The Khronos Group has aggressively defined APIs and the supporting technology necessary to create an open, cross-platform, royalty-free development environment called OpenKODE. OpenKODE supports applications targeting mobile media devices. It includes APIs for 3D graphics, scalable vector graphics, video, and audio, as well as an open digital asset schema designed for interactive applications. This course provides an overview of the Khronos Groups efforts and how the technologies work together to create a cohesive environment for application development and deployment. This course features experts to provide technical overviews of each constituent technology: OpenGL ES 1.1, EGL, OpenGL ES Safety Critical, OpenGL ES 2.0, OpenVG, OpenMAX, OpenSL ES, and COLLADA. The session concludes with a developers perspective to the OpenKODE environment. Attendees will come away from this course with an understanding of the OpenKODE environment and each of its constituent technologies. They will be armed with information on how to obtain the latest specifications, tutorials, examples, and demos and they will be ready to begin developing applications for the exploding mobile media market.