Videoconferencing – picture quality
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What picture quality does videoconferencing deliver?
The videoconferencing systems at JCU are set up with the ability to deliver two concurrent video streams, one of the presenter and one of the presentation while receiving one stream (far end view).
Bandwidth & Resolution
Click here for a table showing the relationship between bandwidth and resolution
Presenter
The presenter view is provided by a high definition camera pointed at the presenter. The quality of this video stream is dependent upon the camera hardware, videoconference codec compression techniques and available bandwidth, delivering a video quality of the presenter, ranging from very good to excellent.
Presentation
The source of the presentation can be a computer file (power point presentations are not uncommon), YouTube clip, or an object or document placed on a visualiser.. This video stream is referred to as the duo video or second video stream and in most cases at a resolution of 1280x720 with frame rate at 30 fps
Future Developments
Ongoing network improvements and the progressive replacement of out-dated codecs now effectively support videoconferencing rates of up to 6Mbits/sec in all the videoconference enabled JCU meeting rooms. Connecting two Cisco C-series endpoints equipped with high definition cameras, results in a picture quality of 1080p@30fps in other words, true high definition.