Feature: Low Latency Video

All H.264 encoders in our product line offer a “low latency” mode on video encoding.

In order to achieve the best results in low latency mode, it is required that the video decoding endpoint, which can be a PC-based video player or a hardware video decoder such as the ION-R100, needs to ensure minimal latency on the video decoding and rendering side. Currently, VMS solutions such as Genetec© Omnicast / Security Center and Milestone Xprotect is compatible with this requirement as they provide acceptable results.

Note that a low latency point to point connection can easily be done by using the ION-R100 on the decoding side; IONODES has fully tested this point to point link for low latency mode.

How can “low latency” mode be enabled in IONODES’ encoders?

Our encoders can be configured for “low latency” video encoding via the device’s web-based user interface. The low latency mode is set individually per video input. There are no particular configuration settings to set on the decoder side when using the ION-R100. When using software video players, such as Videolan VLC, you may need to set the buffering to a minimum to ensure the best results.

What latency can I achieve in “low latency” mode?

Point-to-point testing of low latency mode was done by measuring latency of a video stream encoded by an ION Series encoder, streamed to an ION Series decoder and decoded to a video display device. Set test set-up is shown in the below diagram.

Point to Point Link

Mesurements of latency on the above set-up calculated an average end-to-end latency of 150ms. This includes around 90ms of latency on the video encoder side and the balance on the decoding side.

Conclusion

We hope this gave you a good overview of our low latency video encoding mode.

Should you have questions or need help in setting up your system, please contact us:

IONODES Support Team
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Tel: 450.696.1060