A few weeks back we introduced a new encoder to Azure Media Services called Azure Media Encoder Premium. We’ve been very busy with new features for Media Services including faster encoding, new content protection services with PlayReady, and what everyone has been waiting for – Live Streaming.  But before we talk about the new features, the team has been updating the Azure blog with new details on our existing services.
We are unveiling several exciting updates to Microsoft Azure Media Services at the National Association of Broadcasters (NAB) convention today, all consistent with Media Service’s broader vision of helping media developers build end-to-end media workflows and reduce the costs associated with integrating multiple products and providers. With our most recent service updates from our origin server team, we have enabled a new feature in the server called “Dynamic Packaging” that allows you to encode to a single set of standard ISO MP4 files and then dynamically request multiple protocols by simply changing the URL that you use on your content This week we introduced a new “preview” feature of Dynamic Packaging to enable support for MPEG-DASH live profile streaming. I’ve been very busy traveling to the International Broadcaster’s Convention (IBC) in Amsterdam and delivering two fantastic Microsoft Media Platform Summits in both Amsterdam and Prague. It’s no secret that streaming media has more momentum now than at any previous point in our industry’s history. As a pioneer in the streaming media industry I have seen literally hundreds of different technologies come and go—and in some cases, come back.
This premature death caused a “man the lifeboats” response, which quickly pointed to plugins like Flash and Silverlight and QuickTime and RealPlayer as the bane of our streaming media experience. It has been written “Those who have the youth, have the future.” Many of you reading have served in this industry a long time. Since its inception, the core MPEG­DASH open standard has been a permissive one, allowing a virtually unlimited combination of video codecs and containers, audio codecs, and even transport vectors. DASH-IF has also established close relationships with DVB and HbbTV organizations, facilitated by a great collaboration with the EBU on many topics. Based on this foundation, DASH-IF’s Interoperability Working Group then expanded its efforts to cover the latest technology evolutions, and provided the version 3 of the Guidelines for community review in August 2014. On top of producing the core interoperability guidelines, DASH-IF has established specialized task forces that are working on complementary topics: Advertising Insertion, Live Streaming, and DRM Backend Interfaces. The scope of the Live Services Guidelines is to provide content authoring and client implementation requirements, recommendations, and guidelines for distributing live and linear TV services with MPEG­DASH. The Main IOP brings the ability to trigger manifest updates through in-band messages in segments, URL generation patterns based on manifests and segment information, and finally the signaling of timeline gaps at representation level.
The Ad Insertion Guidelines specify the reference architecture and interoperability points for a DASH-based ad insertion solution.
DASH-IF believes these Guidelines cover the majority of the Ad Insertion scenarios and thereby facilitate a safer migration from older adaptive streaming architectures to DASH. In order to ease the implementation of its recommendations as well as advance the DASH standard in general, DASH-IF has been working on several initiatives designed to help developers validate the compliance of their DASH-enabled solutions. Everybody might also be interested in the DASH Validator (outside link), which checks for MPD and segment conformance, and in the dash.js javascript framework which is designed to be a reference player implementation utilizing the latest Media Source Extensions (MSE) and Encrypted Media Extensions (EME) browser specifications. DASH-IF believes that once the DASH-IF Interoperability Points Guidelines version 3 are finalized, they will lay the ground for swift and stable deployments of HEVC-based OTT video services.
Finally, consider the guidelines that DASH-IF is producing and promoting, as they believe that the industry will be stronger if we adopt a common interoperable version of DASH wherever possible.
Formed in 2012, DASH-IF is the organization responsible for promoting market adoption of the MPEG-DASH standard for interoperable streaming of multimedia content over Internet. MPEG-DASH and H265: How do I use MPEG DASH, Part 2 MPEG-DASH and H265 – How do I use MPEG DASH?
Pokud se nikde mluvi o MPEGu, vitsinou zbystoi jen ti, kteoi se vinuji nataeeni nebo zpracovani pohyblivych obrazku. News, Tutorials, Reviews, and How-Tos related to Embedded Linux and Android, Arduino, ESP8266, Development Boards, TV Boxes, Mini PCs, etc.. The HbbTV (Hybrid Broadcast Broadband TV) consortium, an European initiative for web-based smart TV applications for TVs and set-top boxes, has recently released version 1.5 of the HbbTV specification.
This is a feature we shipped since Feb this year, which enables you to reuse your encoded video (Mp4 or Smooth streaming) to delivery multiple adaptive streaming formats such as Http-live-streaming or Smooth Streaming, by simply changing the streaming URL.
MPEG-DASH streaming format is what we just added as one of the output streaming format for dynamic packaging feature. Therefore, we are thrilled to announce that we the implementation of MPEG DASH comes to Windows Azure via Dynamic Packaging feature. I talked about Live streaming features and workflow in this presentation, BUT THE FEATURE IS NOT IN PREVIEW YET. MPEG-DASH works on any HTTP server and most mainstream media servers, which means that service providers are not required to invest in specialized MPEG-DASH-specific infrastructure. Moving Picture Expert Group (MPEG) has been responsible for developing many multimedia standards, including MPEG-2, MPEG-4, MPEG-7, MPEG-21 and others. MPEG developed the specification working with many specialists and other groups responsible for standards.
To receive the content from each server, a device must support its proprietary client protocol, because each platform uses different segment format. In the past, it was difficult to transmit live video, because of the irregularity of broadband, adverse firewall settings, and the lack of support on the network infrastructure, all of which produced obstacles for live streaming. To solve these problems, the MPEG-DASH was adopted as a standard for multimedia streaming over the Internet, which incorporates the best elements of the three proprietary solutions. The Internet has become an important channel for the delivery of multimedia; and since HTTP is comprehensively used on the Internet, it is widely used for the delivery of multimedia content. MPEG-DASH is set apart from other streaming technologies on the Internet because it can actually divide a video file in to smaller components before it is set to play through a stream.
MPEG-DASH is very storage efficient for streaming service providers like Netflix, which use a content delivery network to store and deliver their videos; but to accommodate different types of devices, these providers had to offer different video formats, which means that they had multiple copies of the same content in their CDN. Since MPEG-DASH encoders generate video segments on demand for the client, the client may be able to utilize that live stream faster and in segment sizes that are suitable to the current bitrate with fewer skips during video playback and a live stream that's closer to real time. The video lives on the server in several different bit-rates with 250 kbs being low quality, 500 kbs medium quality, and 1000 kbs high quality. Web video is encoded in common codec formats and stored in various streaming formats, depending on the media player. MPEG-DASH works seamlessly with various DRM solutions, thereby protecting the rights of movie and sports producers.
This standard is attractive to many companies because of key market benefits that results, such as an independent stable international standard, which is not owned by any single company, as MPEG-DASH is a finalized specification. One-time encryption and packaging of content allows for simultaneous use of multiple DRM technologies.
There are other aspects unique to the MPEG-DASH system, meaning that the system is very adaptable and can be utilized in a number of different formats. Get wired for sound throughout your home with a new state-of-the-art communications and entertainment system! High legal barriers in 10 states make it especially difficult to put solar panels on rooftops. This new encoder complements our existing encoding services by offering more advanced features for the media and entertainment industry.
Just a couple months off to re-charge the batteries, learn some new things I have put off for too long, and spend time with the family. This includes key new services like Live, Content Protection and Key Delivery, and enhancements to our encoder’s capabilities and support for popular streaming formats.
Now that I’m back in the office again, it’s time to get back to updating folks on what is new and upcoming in Windows Azure Media Services this Fall and into next year. That’s not to say that the road to today has been paved with more successes than failures but clearly we have cycled through quite a few workflows and deployment platforms over the years as a collective industry. The idea was that, using a readily available client like a browser, consumers could watch all the streaming video they wanted via a ubiquitous format like DASH. You have seen trends come and go and technologies rapidly adopted or alternatively, discarded.

It’s compatible with a variety of multi-channel audio codecs from industry leaders Dolby, DTS and Fraunhofer.
Now that the European Broadcast Union has endorsed HbbTV it has taken off in Europe with over twelve countries adopting it as a standard. While this flexibility has generated traction in the industry, as DASH can be leveraged to cover various use cases, too much flexibility raises the risk of incompatible deployments. The DASH Industry Forum (also known as DASH-IF) was officially incorporated in September 2012 as the successor to the previous DASH Promoters Group.
However, DASH-IF believes its interoperability points are well suited for the common OTT desktop & mobile use cases, and now works on facilitating convergence between the mentioned sectors.
In July 2014, DVB ratified its MPEG-DASH Profile for Transport of ISO BMFF Based DVB Services over IP Based Networks, aligning closely with DASH-IF’s implementation guidelines and adding a selection of appropriate video and audio codecs from the DVB toolbox, plus MPEG Common Encryption and EBU-TT-D subtitles. DASH-IF encourages companies and industry experts to submit their feedback through the available online tool.
The baseline reference architecture addresses both server-based (typically used with Apple HLS) and app-based (typically used with Microsoft Smooth Streaming and Adobe HDS) scenarios. This software package is open source, with an ever-increasing number of contributors (volunteers are always welcome). For the version 4 of its Guidelines, DASH-IF wishes to add new Interoperability Points dedicated to Ultra HD profiles. In 2014 the first DASH Roadshow was organized in Japan and will be replicated in other regions to bring DASH evangelists even closer to the local video ecosystems. Oada lidi si MPEG obvykle spojuje s formatem komprese, tedy se skuteenosti, ze jeho nove a vylepsene verze poinaseji lepsi kvalitu poi mensim datovem toku, coz je poipad i nedavno popisovaneho MPEG-HEVC. The HbbTV consortium has already started working on HbbTV specification version 2.0, but did not provide details at this time. I am preparing my Build presentation and started to realize how much progress our services made. Therefore, you no longer need to go through an intermediate step which packages video asset into various streaming format. This is available now for you to take for a test drive.  While the DASH feature is technically only at “preview” quality, you can access it from your on-demand streaming Origin server in Media Services. By using Microsoft Player Framework, you will be able to build a native store application in either HTML5 or XAML to enable DASH playback with DRM support. A standard for HTTP streaming of multimedia content would allow a standard-based client to stream content from any standard-based server, allowing cooperation between servers and clients manufactured by different vendors.
Consumers are now expecting content delivery to have the same high quality that they see on TV on every video enabled device that they own. Streaming protocols from Adobe, Apple and Microsoft are closed systems with their own format of different text file extensions, protocols and content formats.
By doing this, MPEG-DASH provides cooperation between different servers in the network and different consumer electronic devices. As a stream is playing, each of these components can be integrated into the stream, without causing disruption.
Under the MPEG-DASH standard all content can be encoded and encapsulated one way, and stored on CDN servers just once, leading to cost savings for storage space in addition to improved streaming performance.
Years ago, Web video was easy, as a 2, 4 or 10 MB file was downloaded to a device and then played.
The device determines and then commands the server to send the best quality given the current network conditions (see diagram).
Video delivery companies have their own streaming format and their own method of streaming, while MPEG-DASH defines openly published profiles.
It delivers the complex DVD or Blu-ray experience, with multiple synchronized video and audio options. MPEG-DASH is designed for fast start-up, and the segments accessed via byte-range requests can optionally be stored contiguously on the server. MPEG-DASH avoids having to provide multiple streaming solutions, each of which requires a separate ad insertion flow, content protection, and a different closed captioning format. There is a dedicated group of encoders, content packagers, delivery platforms, and player builders, which provide a wide range of MPEG-DASH solutions. Developers are starting to think about the benefits of incorporating this system into other streaming sites, because it has the capability to work with a number of different file formats, with just a few modified component parts. The I2000 Music Distribution and Intercom Systems provide a wide variety of features at an affordable price so you can enjoy the luxury of music throughout every room in your home without moving a muscle. This new encoder allows you to build out more professional cloud encoding workflows on our platform with support for more file formats and a new visual workflow designer tool. We have been in Preview release for about 4 months now across 6 data centers and things are going amazingly well.
You cannot pick up a phone or tablet or turn on the TV without being exposed to a variety of streaming media offerings. Before Steve Jobs left this mortal coil, he misguidedly convinced the world to put a stake into the heart of the most popular video playback platform, Flash. By eliminating the unique benefits of plugins and replacing them with more standardized playback elements in a browser, the concept of a universal playback platform and format was born. Based on a HTML browser experience in the TV, HbbTV enables for more standardized DASH-based experiences.
The recent addition of Google as a member brings a decisive acceleration in this convergence movement and strengthens the idea that DASH is deeply rooted in the ecosystem as the successor to proprietary adaptive streaming technologies like HLS, HDS, and Smooth Streaming.
The benefit of convergence in terms of reducing the cost of deployment for everybody in the chain is substantial, and thus the DASH-IF fills a crucial role in the industry as the coordination and interoperability hub between various standardization bodies integrating DASH into their specifications. The HbbTV consortium has chosen to integrate the DVB-DASH Profile in its next HbbTV v2 specifications, which are expected to be published in early 2015. In order to lower implementation complexity, some constraints were applied to the original ISO BMFF profiles: MPD playlist-based addressing, multiplexed media as well as open GoP switching were excluded from the scope. The tools that are used to handle ad insertion are XLink (dynamic referencing of external elements to a manifest), DASH events (messages embedded directly in a MPD or transported in media segments), and MPD Updates (refreshing the manifest at specific intervals).
Many DASH­IF members speak during webcasts and tradeshows worldwide all year long, and are appreciated as they share valuable knowledge and insights. When will Google, the ghost of Steve Jobs and Microsoft start a proxy war over MPEG DASH and VP9 ?
Ale Moving Picture Experts Group, expertni skupina, ktera za vyvojem tichto standardu stoji, se nezabyva jen kompresi obrazu a zvuku. And these streaming formats are usually preferred on certain platform, for e.g Apple supports HLS playback in Safari and iOS devices. And for client side, W3C also introduced two important extension APIs for HTML5: Media Source Extension (MSE) APIs (to enable DASH playback) and Encrypted Media Extension (EME) APIs (to enable DRM License Acquisition).
Our PM John Deutscher wrote a step-by-step blog to produce DASH content, please check out if you want to give it a try. This is a sample application our lead developer Tim Greenfield has built as a demo of DASH playback. Because of this, content producers and equipment manufacturers had to create diverse versions of their products to cover the entire range of products for streaming video. Multiplexed and non-multiplexed video and audio tracks can be mixed, providing for dynamic bandwidth adaptation, and support for multiple audio options such as language selection, surround sound, and bandwidth efficiency by sending only the requested tracks, as well as reduced production, storage, maintenance and delivery costs. It also improves scalability and fault tolerance by defining multiple-base URL, while signaling content descriptions such as accessibility, rating, and audio channel configuration.
Presently, it can work with MPEG-2 and MPEG-4 technologies because the MPEG-DASH program was created specifically to work with these file formats. From Amazon Prime Video to Netflix, from Pandora to Amazon Prime Radio, streaming has quickly become the de-facto model of distributing premium content to online viewers.

The Guidelines indicate how a DASH packager is expected to translate MPEG-2 transport SCTE 35 cue messages in both scenarios. DASH-IF also organized networking events like the IBC 2014 Networking Reception which recently gathered 280 DASH enthusiasts at the Heineken Brewery in Amsterdam.
Poikladem mohou byt standardy MPEG-7 a MPEG-21, pokryvajici i tak zdanlivi odlehle oblasti, jako jsou metadata a multimedialni aplikace.
However, this formats fragmentation increases cost for content providers since they have to encode videos into multiple formats in order to deliver them into multiple platforms.
Moreover, there is a JavaScript library called DASH.JS implemented these interface which enables DASH playback in HTML5.
To keep a stream of video flowing smoothly, the servers need to send these smaller segments when the device can accommodate them.
It can be deployed using standard web servers and it work with existing Internet infrastructures, including CDNs, caches, firewalls and NATs.On-demand, live and time-shift applications.
ATSC is currently considering DASH for its version 3 specifications, while DECE is working on the UltraViolet Common Streaming Format, which is based on Common File Format and aligned with MPEG-DASH and DASH-IF Implementation Guidelines to provide adaptive streaming over HTTP in the UltraViolet context. Therefore, DASH is very likely to become a cross-platform, cross-browser video streaming solution in the future, if everyone starts to converge to standard. We will deploy live streaming all over the globe and you can scale up, scale down as time as you want.
MPEG-DASH supports on-demand, live and time-shift applications and services with a single framework.Switching and selectable streams. Please refer to the presentation video if you want to know more about live streaming features.
The MPD provides adequate information to the client for selecting and switching between streams, for example, selecting one audio stream from different languages, selecting video between different camera angles, selecting the subtitles from provided languages, and dynamically switching between different bitrates of the same video camera.Ad insertion.
Below is a snapshot of my live streaming demo remote with Redmond and you can catch that at 38:00 of my presentation video.
With live streaming, the duration of the next segment can also be signaled with the delivery of the current segment.Multiple base URLs. The same content can be available at multiple URLs—that is, at different servers or CDNs—and the client can stream from any of them to maximize the available network bandwidth.Clock-drift control for live sessions. These describe content rating, components’ roles, accessibility features, camera views, frame packing, and audio channels’ configuration.Subsetting adaptation sets into groups. Grouping occurs according to the content author’s guidance.Quality metrics for reporting the session experience. The standard has a set of well-defined quality metrics for the client to measure and report back to a reporting server.I applaud the fact that some of the industry have moved towards working on this and that it is currently in completion stages for ISO publishing. One of the major reasons behind the initiative is for no-stutter high quality video over LTE networks. There's also a possibility of adding DASH-264 into the HTML5 standard, since W3C requires a codec to be considered in HTML5 but MPEG-DASH itself is codec agnostic.That is exactly what I wanted to find out.
With no requirement for a specific codec I would gather that Google doesn't care either way, as long as it gets more people watching more video from YouTube, right?
Enter MPEG-DASH.Moving Picture Expert Group (MPEG) has developed several widely used multimedia standards, including MPEG-2, MPEG-4, MPEG-7, MPEG-21.
Their latest standard to be introduced, Dynamic Adaptive Streaming over HTTP, or MPEG-DASH, is an attempt to solve the complexities of media delivery to multiple devices with a unified common standard.The first major trial utilizing MPEG-DASH occurred in 2012 for the London Olympics. Vlaamse Radio- en Televisieomroeporganisatie (VRT) offered its audience the chance to experience the Olympic Games broadcast on their personal devices via the MPEG-DASH to demonstrate the benefits of the standard for adaptive streaming. The adaptive bitrate video experience is superior to delivering a static video file at a single bitrate, because the video stream can be switched midstream to be as good or bad as the client’s available network speed (as opposed to the buffering or interruption in playback that can happen when client’s network speed can’t support the quality of video).
Because it uses the standard HTTP port, the lack of firewalls, special proxies or caches, and its cost efficiency have increased its popularity and use. There are three main protocols for this type of delivery- HTTP Live Streaming, Microsoft Smooth Streaming, and HTTP Dynamic Streaming.
Each protocol uses different methods and formats, and therefore, to receive the content from each server, a device must support each protocol. A standard for HTTP streaming of multimedia content would allow a standard-based client to stream content from any standard-based server, thereby enabling consistent playback and unification of servers and clients of different vendors.In response to the scattered landscape, MPEG issued a Call for Proposal for an HTTP streaming standard in April 2009. In the two years that followed, MPEG developed the specification with participation from many experts and with collaboration from other standard groups, such as the Third Generation Partnership Project (3GPP). More than 50 companies were involved — Microsoft, Netflix, and Adobe included — and the effort was coordinated with other industry organizations such as studio-backed digital locker initiator Digital Entertainment Content Ecosystem, LLC (DECE), OIPF, and World Wide Web Consortium (W3C). This resulted in the MPEG-DASH standard being developed.How Does it Work?The image below illustrates a simple streaming scenario between an HTTP server and a DASH client.
In this figure, the multimedia content is captured and stored on an HTTP server and is delivered using HTTP.
By parsing the MPD, the DASH client learns about the program timing, media-content availability, media types, resolutions, minimum and maximum bandwidths, and the existence of various encoded alternatives of multimedia components, accessibility features and required digital rights management (DRM), media-component locations on the network, and other content characteristics.
Using this information, the DASH client selects the appropriate encoded alternative and starts streaming the content by fetching the segments using HTTP GET requests.After appropriate buffering to allow for network throughput variations, the client continues fetching the subsequent segments and also monitors the network bandwidth fluctuations.
Depending on its measurements, the client decides how to adapt to the available bandwidth by fetching segments of different alternatives (with lower or higher bitrates) to maintain an adequate buffer.The MPEG-DASH specification only defines the MPD and the segment formats. The delivery of the MPD and the media-encoding formats containing the segments, as well as the client behavior for fetching, adaptation heuristics, and playing content, are outside of MPEG-DASH’s scope.Benefits of MPEG-DASHThere are several key benefits in the adaption of this new standard.
Due to the fact that several major media companies took part in its development, the new protocol will eliminate technical issues in delivery and compression.
In essence, it aims to combine all of the technologies and standards into one, making streaming support seamless on all devices. Content publishers can generate a single set of files for encoding and streaming that should be compatible with as many devices as possible, from mobile to OTT, as well as to the desktop via plug-ins or HTML5.
For more information on the latest in DASH deployment click here.DRM for MPEG-DASHOne of the things that makes MPEG-DASH unique is it’s support for Encrypted Media Extensions (EME) and Media Source Extension (MSE).
Because of this, video players can operate without the use of a plug-in, and enables leading streaming standards like HTTP-Live-Streaming, time shifting, and alternate audio tracks.
MSE is not specific to any codec, container, or DRM scheme, so it can work with any format the browsers supports, creating the opportunity for seamless cross-platform playback.Encrypted Media Extensions (EME)This is a JavaScript API that is part of a larger content protection and delivery system for HTML5.
EME uses Content Decryption Modules (CDM) which are built into the browser, but function independently of the browser. This was a requirement from the media and entertainment industry since the browser is viewed as insecure and untrusted. The CDM is the trusted component that content owners rely on for copyright protection.For DRM EME uses a Key System instead of what is traditionally referred to as a DRM scheme. They Key System is the component of the CDM that handles encryption and decryption of content. In the case of the web browser, each browser would have it’s own unique key system, which ensures cross browser compatibility.What makes EME unique is that it is not tied to any specific DRM scheme.
Whether decrypting and serving, encrypting and decrypting, or bypass the CPU by using the GPU, the more the CDM handles the more secure the content remains in the end-to-end workflow. Essentially the more the CDM manages the content-protection process, the less the user can interfere and potentially violate content copyrights.
Encryption can happen both within and without the container, but generally happens within the container.

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