Sensoray has added features to its Model 2246, a USB 2.0 A/V processor that supports multiple video input formats, including SDI 1080i, 720p, and both SDI and analogue NTSC/PAL SD. It compresses A/V to MPEG-1, MPEG-2, or MPEG-4 and sends the resulting stream over USB, and can capture uncompressed full-frame snapshots while simultaneously generating live or freeze frame video outputs. Four video outputs (HD-SDI/SD-SDI, DVI, SVIDEO, and composite) function simultaneously regardless of the video source format.
Selected video is copied to three independent overlay generators, which produce three uncompressed, overlaid video streams. These three video streams are then processed in parallel by the compression engine (along with audio), video output generators, and frame capture subsystems.
Model 2246 supports text and graphic overlays at 16-bit colour resolution and displaying any true-type font. Eight hardware-managed regions are supported and graphics can be standard .bmp files or generated on the fly by Sensoray's 2246 API. Each overlay region may be applied to the compressed stream, the live video output stream, the freeze frame video, or any combination of these.
The 2246 has eight digital inputs and four digital outputs for general purpose use. Windows and Linix drivers are available for software developers. In addition, there is dedicated stand-by circuitry for composite and S-video signals which enables video inputs to pass directly to video outputs when power is lost.
