This message was authored by ChriseeThis message was authored by: Chrisee
Re: Does a higher broadband speed over 35MG improve the picture quality on Sky Glass?
30 Sep 202207:27 AM
Posted by a Superuser, not a Sky employee. Find out more
@BHS1952jitter is the measure of regulatrity of the data stream. The data required for a video stream is delivered in data packets pretty obviously these have to be received in order so the stream can be re-assembled. Where a packet is missing or arrives out of order that disrupts the process of assembling the stream for display. There is a limited buffer built into the system but where that is exceeded the stream is disrupted with stuttering, macro blocking etc and if limits are exceeded loss of the stream.
The biggest source of jitter is the wifi signal in your home which is liable to interference from other wifi networks but also from a range of other sources. Having excess bandwidth within a home network is far more important than faster external connection in my opinion.
We are talking about digital data where if 100% of what is sent is received then the stream plays at the quality intended. The average data rate for UHD is around 20Mb/s but can rise and fall which is why 25Mb/s is recommended but many people including myself go for a belt and braces 35Mb/s. That rate is determined by the level ofcompression at the headend that is something out of your control. Having 100Mb/s available isnt going to change the compression so as long as your connection can handle any peak bursts then having excess bandwidth is not going to improve quality.
In a trial I streamed 2 Sky Sports UHD events and 2 HD streams over my 80Mb/s FTTC connection all of ehich played wiithout issue and had around 20Mb/s capacity left for other network devices to access..
65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast+ Broadband with SR203 Hub
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