OTT Archives – Page 25 of 45 – The Broadcast Knowledge

Video: A Subjective Comparison of Broadcast and Unicast Transmission Impairments

Posted on 24th June 2019 by Russell Trafford-Jones

Encoding at a high quality is only part of the equation for delivering a great experience to your viewers. When something goes wrong, the way viewers feel is just as important and then when it’s going right.

In this talk, Brahim Allan from British Telecom talks is through their experiment finding out how people felt about various different types of video impairment and the various sizes of screen now available on smart phones, tablets and, of course, TVs.

Brahim explains that they compared errors associated with broadcast and multicast delivery which appear as areas of extreme color or tearing of the image, with errors associated with Adaptive Bit Rate unicast, such as interruptions and quality variations. Interruptions were the most annoying impairment and interestingly young students have similar views to the adults.

Watch now for the full results!

Speakers

Brahim Allan
BT

Video: Reducing Stream Latency

Posted on 20th June 2019 by Russell Trafford-Jones

Latency seems to be the new battleground for streaming services. While optimising bandwidth and quality are still highly important, they are becoming mature parts of the business of streaming whereas latency, and technologies to minimise it – as Apple showed this month – are still developing and vying for position.

Here, the Streaming Video Alliance brings together people from large streaming services to explore this topic finding out what they’ve been doing to reduce it, the problems they’ve faced and the solutions which are on the table.

Watch now!
Speakers

	Kevin Johns Distinguished Network Architect, Content and Media CenturyLink
	Chris Sammoury Principal Engineer II, Charter Communications
	Richard Oesterreicher CEO Streaming Global/Hellastorm
	Patrick Gendron Director, Innovation Harmonic
	Johan Bolin Chief Product and Technology Officer, Edgeware
	Steve Miller-Jones Vice President of Product Strategy, Limelight Networks
	Jason Thibeault Executive Director, Streaming Video Alliance

Video: Low Latency and High QOE for Live Streaming

Posted on 16th June 2019 by Russell Trafford-Jones

Low latency streaming is always a compromise, but what can be done to keep QOE high?

This on-demand webinar looks at CMAF and presents some real-world data on this low latency technique. The webinar starts by explaining that CMAF is a low-latency streaming technology similar to HLS and other streaming protocols where the idea is to deliver the video as small files. Olivier and Alain from Harmonic explain how this is done and look at some of the trade-offs and compromises that are needed and introduce techniques to keep QOE high. They also look at deployment in cloud vs. on premise.

Pieter-Jan Speelmans talks about play tradeoffs and optimisations within the player. CMAF allows the buffer to be reduced and whilst a bad network may mean you buffer is similar to ‘normal’, but in good networks, this buffer can be brought down significantly. He also talks about how ABR switching is impacted by GOP length even in CMAF.

Viaccess-Orca explains how DRM works with CMAF and looks at some of the challenges including licences acquisition time and overloading licence servers at the beginning of events. Akamai’s Will Law explains some benefits of CMAF and the near-real-time of chunk-based transfer (HTTP 1.1) and how downloading chunks at full speed leads to problems when the same broadband link is used by several clients.

There are lots of good talks on CMAF, but this is one of the few which talks about CMAF not as theory, but as is deployable today.

Watch now!

Speakers

	Olivier Karra SaaS Business Development Director, Harmonic Inc.
	Alain Pellen Sr. Manager, OTT & IPTV Solutions, Harmonic Inc
	Will Law Chief Architect – Media Devision, Akamai
	Pieter-Jan Speelmans Founder & CTO, THEOplayer
	Nicolas Delahaye VP Engineering Player, Viaccess-Orca

Webinar: Low-Latency CMAF vs. WebRTC

Posted on 12th June 2019 by Russell Trafford-Jones

CMAF brings low latency streams of less than 4 seconds into the realms of possibility, WebRTC pushes that below a second – but which is the right technology for you?

Date: June 12th 2019 Time: 11am PST / 2pm EST / 19:00 BST

CMAF represents an evolution of the tried and tested technologies HLS and DASH. With massive scalability and built upon the well-worn tenants of HTTP, Netflix and a whole industry was born and is thriving on these still-evolving technologies. The push to reduce latency further and further has resulted in CMAF which can be used to deliver streams with five to ten times lower latencies.

WebRTC is a Google-backed streaming protocol with the traditional meaning of streaming; it pushes a stream to you a opposed to the HLS-style methods of making small files available for download and reassembly into a stream. One benefit of this is extremely low bitrates of 1 second or less. Used widely by Google Hangouts and Facebook messenger, WebRTC is increasingly an option for more broadcast-style streaming services from live sports & music to gaming and gambling.

Both have advantages and draw-backs so Wowza’s Barry Owen and Anne Balistreri are here to help navigate the ins and outs of both technologies plus answer your questions.

Register now!

Speakers

	Barry Owen VP, Professional Services, Wowza
	Anne Balistreri Product Marketing Manager, Wowza

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