Sensoray 512 DOS - Manual (Page 5)

5
3. Introduction
The Sensoray Model 512 is an MPEG video encoder decoder board. Some of the feature include:
General
•
Real time MPEG-2 and MPEG-1 video encoder and decoder
•
Support for variable bit rate and constant bit rate
•
IPB pictures to 15Mbps for constant bit rate and 10Mbps for variable bit rate
•
Supports multiple resolutions (704x480, 640x480, 352x240, etc.)
•
Support for NTSC, PAL
•
Composite and Svideo inputs and outputs
•
During encoding and standby, video input is fed to output for easy adjustment
•
DOS, Linux, and Windows driver available
•
PC/104 form factor
•
Either BNC connectors or header for video input and output
•
Either mini phone jacks or header for audio input and output
•
3 digital TTL level digital inputs and/or outputs
•
Low power
Video encoder
•
Generates 13818 (MPEG-2) and 11172 (MPEG-1) compliant elementary streams (ES)
•
Operates up to 30 frames per second
•
Selectable bit rate
Video decoder
•
Decodes both MPEG-1 and MPEG-2 streams
•
Horizontal and vertical scaling
DOS Driver features
•
Low memory usage
•
All functions called through the i86 software interrupt mechanism for universal language support
•
Easy calls to functions that return or send blocks of compressed video to and from the 512
hardware
•
Easy calls to functions that return or send blocks of uncompressed audio to and from the 512
hardware
•
Status functions
•
Digital I/O functions
•
Command line utility to set up video parameters such as bit rate, resolution, etc.