As a survey of content streamers suggests, application latency is affected by local loop issues, but primarily by encoding and transcoding. About 17 percent of latency issues were seen as caused by the access networks on either end of any streaming operation. Most of the latency issues are caused by launch or receive coding or transcoding in the core network.
As with anything related to the internet, end-to-end performance is affected by lots of things--not just the performance of access networks. These days, core networks add so little latency as to be almost negligible in most cases.
Also, use of content delivery networks (edge computing) also reduces the impact of core network transit issues. About 42 percent of streaming content providers say CDNs (“short segment lengths”) are a primary tool for controlling latency issues.
Streaming providers universally hope for improved performance in the future.
source: Wowza
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