SD MPEG-2 Video Encoding
Inputs
SDI Input via 75 ohm BNC connector.
Digital Audio Input via 15 way D-Type connector
Overview
The SD MPEG-2 VCM can encode one standard definition video input. It can also encode up to eight channel pairs of audio (with
appropriate licences), or pass through pre-encoded Dolby Digital encoded audio.
The video input signal is processed in to a compressed encoded bit-stream in accordance with the MPEG-2 main Profile @ Main Level
(MP@ML) specification (ISO/IEC 13818).
A constant bit rate (CBR) output can be produced and may be set to between 256 kbps and 15 Mbps. The card can also produce a
variable bit rate output when operating as part of a Reflex statistical multiplexing system.
The video signal can be subjected to spatial filtering and motion adaptive noise reduction prior to being MPEG-2 encoded.
Video Compression Functionality
The following is a summary of the Video Compression functionality available from the EN8100 SD MPEG-2 VCM.
Test Patterns
The video pre-processor has the facility to generate a
test pattern
.
Loss of Video Input
On loss of video input, the SD MPEG-2 VCM can be configured to select Black, Bars and Red (a test pattern) or a freeze frame as the
output. It is also possible to configure it to stop generating the compressed video component on loss of the video input.
Impairment Reduction
The video pre-processor provides spatial/temporal noise reduction which is motion adaptive (with appropriate licences).
Function
Comments
MPEG-2 Main Profile @ Main Level encoding
See
Transport Stream Output Overview
for transport stream rates.
Variable Seamless Mode
Support for a constant bit rate mode
Support for current reflex mode (look ahead
mode 4)
Video Input 720x576, 25 Hz
Video Input 720x480, 29.97 Hz
Output resolutions 720, 704, 640, 544, 528,
480, 352 X 576/480 352 X 288/240
Support for different resolutions including the standard set of video
picture resolutions for both 625 (576/288 PAL) and 525 (480/240
NTSC) line operation.
Impairment Reduction
Comments
Spatial Filtering
Noise Reduction (motion adaptive)
Only available if license VP/SWO/SDMP2/NR has
been purchased.
© Ericsson AB 2011. All rights reserved
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