Playready 4 will bring closure to the DASH dream: one single OTT format to rule them all

Editor’s note: the initial version mistakenly identified AES-CTR as “AES-CTB”, which doesn’t really exist. What got us here? 2017 was a weird year. It’s not often that the OTT video industry comes together to create simplify the industry player’s lives. It was tried before and failed. Then DASH appeared, it promised to rule on the OTT format wars, by proposing a single standard format, but at the end of the day, it failed to deliver its promise. DASH is a single standard, but as any other┬ábad standard, it allows for options, incompatible options. It’s these options which allows standard compliant …

Introduction to Multicast ABR (M-ABR) – Where it works and where it totally fails

Last year (2016), Cablelabs published a very interesting document entitled “IP Multicast Adaptive Bit Rate Architecture Technical Report“, describing how to bring together two fundamental and previously incompatible network concepts: Multicast and Adaptive Bitrate delivery, in what it call Multicast ABR (M-ABR). But, does it make sense? If it does, on which use cases it works? Let me spoil the surprise: It does make sense on one single use case. It spectacularly fails elsewhere. To start with, lets have a look at the generic M-ABR architecture:

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