The USB Implementers Forum released a new specification that defines USB interface for video streaming devices. According to the group, the USB Video Device Class Specification Revision 1.0 provides a standard to which hardware vendors can build USB video streaming devices, and operating system developers can create a single class driver.

According to the USB-IF's Device Working Group, which developed the spec, the new standard provides scalable device cost and complexity, and supports high-quality video and audio synchronization in addition to single and multiple function devices. It also is video format neutral, supporting steam-based video formats (MPEG2 and MPEG4) and those that are frame-based, including uncompressed, MJPEG and DV.

A large range of low- to high-complexity devices are targeted for this device class, ranging from simple webcams and full-featured digital video cameras to tape decks and TV Tuners — basically, anything that streams video, the group said. Initial device development is expected to include PC Cameras, digital still cameras, and digital camcorders.

Device prototypes from Canon and Sanyo will be demonstrated at the Intel Developer Forum in San Jose, CA next week, in the USB-IF booth (#701). Device prototypes were demonstrated at last spring's WinHEC conference, with the prototype video class driver planned for release in Microsoft's “Longhorn” OS and preceded by a solution for Windows XP.

The specification is available for download here, at the USB-IF Web site.

The non-profit USB Implementers Forum was formed to provide a support organization and forum for the advancement and adoption of USB technology. The USB-IF facilitates the development of high-quality, compatible USB devices, and promotes the benefits of USB and the quality of products that have passed compliance testing.

 
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