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VNS104
Performance
The performance of the VNS104 depends on the bit rate of the PURE3 streams and the
capability of the PC hardware it resides on.
If hardware limitations are encountered, the image may update more slowly. The
VNS104 monitors its performance and makes adjustments in real time to ensure the
highest quality video. Decoding a source stream can be suspended when resource limits
mean decoding is no longer possible.
Image Quality and Motion
When the hardware hosting the VNS104 is unable to sustain performance at the bit rate
of the connected stream, image quality is maintained at the expense of motion. Where a
tradeoff must occur, the application throttles back to support a maximum 30Hz refresh
rate, independent of the encoded stream.
Host PC Resource Monitoring
The VNS104 monitors the host PC resources at all times. It can suspend decoding
of a single stream or all streams when resource limits in the host PC prevent normal
decoding.
The application monitors resources and protects against problems that may cause the
VNS104 application or the operating system to fail.
NOTE: Resource limitations can occur if the bit rate of the streams is such that the
packet density causes UDP frames to be dropped in the network (switch) or in the
PC network card. Resource problems can also occur on a PC platform that does
not meet the minimum requirements.
19VNS104 Multi‑Stream Decoder • Performance