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Media Technology Review

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AZ-304 Exam Preparation: Designing a Microsoft Azure Architecture
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Architecting Microsoft Azure Solutions
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Overview
DifficultyBeginner
Duration1h 13m
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Description

This course is focused on creating practical solutions using Azure technologies in areas such as AI, messaging, the Internet of Things, and video media. This will require familiarity with dozens of Azure solutions.

This course will take you through all of the relevant technologies and ensure you know which ones to pick to solve specific problems. This course is for developers, engineering managers, and cloud architects looking to get a better understanding of Azure services.

Whether your app deals with artificial intelligence, managing IoT devices, video media, or push notifications for smartphones, Azure has an answer for every use case. This course will help you get the most out of your Azure account by preparing you to make use of many different solutions.

Learning Objectives

  • Design solutions using Azure AI technologies

  • Design solutions for IoT applications using Azure technologies

  • Create a scalable messaging infrastructure using Azure messaging technologies

  • Design media solutions using Azure media technologies and file encoding

Intended Audience

  • People who want to become Azure cloud architects

Prerequisites

  • General knowledge of IT architecture

Transcript

Azure Media Services is your base of operations for managing video media. It will handle storage, encoding, and packaging video for streaming delivery. To use it you need to create an Azure Media Services account. This is as simple as a few clicks in the Azure web portal.

As you can see from the diagram Media Services manages video content in five parts. First, there is upload and storage for administering content at rest. Then there is the encoding step to prepare content for media players. Next is setting asset delivery policies for clarifying how content can be used. From there, content is published to an OnDemand locator, and finally, content can be streamed to clients. Mixed into those five steps are some important security decisions. In this diagram, we add those in. There is setting the encryption content key and an authorization policy. Together these allow for content to be dynamically encrypted during playback. Media Services also includes options for encrypting content at rest.

Azure Media Services supports a number of approaches to delivering content. You can create streaming endpoints for video content using multi-bitrate (adaptive bitrate for unstable network conditions) streams over HLS, HTTP Live Streaming, or MPEG-DASH. You can create URL endpoints for both streaming or download. It’s up to you to decide whether you want users to be able to copy your media files, play them in browsers, or stream them in smart phones and other devices.

Honestly, it would take its own course to cover every single thing Media Services can do. See the documentation if you really want to go down a rabbit hole. One very important thing I will leave you with regarding Media Services, however, is that you can interact with its functionality in multiple ways. Like other Azure products Media Services works with the Azure web dashboard, a REST API, and has an SDK for .NET language support. So regardless of how you want to access your Media Services account, you will always have options.

Now, an important related service is the Azure Video Indexer product. Video Indexer replaces the older Video API service Azure supported in the past. Video Indexer is a relatively straightforward set of tools built on top of Azure Media Analytics, which we will cover later. It is designed to extract information from videos for easier management. So for example you can use Video Indexer to do visual text recognition on a video, transcribe audio, detect faces, translate the video to another language, and much much more. See the list of features in the slide here to get a full sense. Important to note: These tools are also supported by the SDK and can be accessed using .NET or REST calls.

Finally, the Azure Computer Vision API is somewhat similar to the image classification tools we discussed in the section on AI. This API gives developers tools for processing images using Azure’s advanced classification algorithms. You can access the API using languages like Python, C#, Ruby, Java, and PHP, or even just use cURL. Assuming your image meets the requirements shown in the slide, you can then call the API to do things like recognize text, flag adult content, apply tags based on content, generate descriptions, detect human faces, and even recognize domain-specific content.

So there you have it - we have gone over most of the basic media technologies in the Azure software ecosystem. We still have one major component to cover - the Azure Media Analytics toolset. We will cover that and briefly discuss file-based encoding systems in Azure in the next lesson. See you there.

About the Author
Students6530
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Jonathan Bethune is a senior technical consultant working with several companies including TopTal, BCG, and Instaclustr. He is an experienced devops specialist, data engineer, and software developer. Jonathan has spent years mastering the art of system automation with a variety of different cloud providers and tools. Before he became an engineer, Jonathan was a musician and teacher in New York City. Jonathan is based in Tokyo where he continues to work in technology and write for various publications in his free time.