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Smooth Streaming Client SDK Beta for Windows 8 Released by samzhang

We just released Smooth Streaming Client SDK Beta for Windows 8. It enables developers to build Windows 8 Metro Style applications that consume On-Demand and Live Smooth Streaming content w/ PlayReady protection. If you have any questions or feedback...
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Smooth Streaming to XBox and Beyond by samzhang

Last month, Microsoft announced the new TV platform for XBox and a long list of content providers that will be bringing their TV and premium content onto XBox. For more detailed information, please check the press release here and here . As someone from...
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Smooth Streaming Case Studies by samzhang

Here are a few links to smooth streaming case studies based on some real world solutions that we helped build over the years. Hopefully you would find them interesting: The World's First IIS Live Smooth Streaming Event CTV NBC Sunday Night Football NBC...
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Fragmented MP4 vs. MPEG2-TS by samzhang

Today there are a few popular HTTP adaptive streaming solutions in the industry including Microsoft Smooth Streaming, Adobe HTTP Dynamic Streaming and Apple HTTP Live Streaming (HLS). One important difference among these solutions is the file format that...
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File Write-Through Behavior in Live Smooth Streaming Archiving by samzhang

In IIS Media Services 4.0, we introduced the file write-through behavior with Live Smooth Streaming when doing DVR/Archiving from the publishing point. What does file write-through mean? Here is a bit of background: On Windows, the operating system’s...
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Performance Tuning for On-Demand Smooth Streaming by samzhang

This is another blog post that has been long due. I’ve written a lot about Live Smooth Streaming in my past blog posts but so far very few on On-Demand Smooth Streaming. Well, partially because getting On-Demand Smooth Streaming to work is quite simple...
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IIS Media Services 4.1 just released! by samzhang

We just released IIS Media Services 4.1 that adds support for REST services API's for management of publishing points as well as performance improvements for both on demand and live scenarios. Read more from here .
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IIS Smooth Streaming getting deployed for Comcast Xfinity by samzhang

Yes, the news is out and we can finally talk about it! Our IIS Smooth Streaming platform, together with Microsoft PlayReady DRM technology, is being deployed for Comcast’s Xfinity online service. We’re very excited about this opportunity and the statement...
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How to authenticate ONLY the encoder streams but not the clients for live smooth streaming? by samzhang

This question was asked quite a few times from our customers and on the media forum. The scenario is that I, as an site administrator, want to authenticate encoder streams that are pushing in for live smooth streaming. However, I don’t really want all...
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How to Troubleshoot Live Smooth Streaming Issues? – Part 7 (Putting It Together) by samzhang

6. Putting it all together In previous sections, we discussed many different ways of diagnosing live smooth streaming issues. Now, let’s go through a troubleshooting example to see how to use them in real world debugging. In this example, first we started...
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How to Troubleshoot Live Smooth Streaming Issues? – Part 6 (IIS Logs and Others) by samzhang

5. IIS Logs Since smooth streaming client requests are all standard HTTP requests going  through IIS pipeline, all these requests are being logged by IIS logs which are located in %systemdrive%\inetpub\logs\LogFiles\. An example of the log entries...
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How to Troubleshoot Live Smooth Streaming Issues? – Part 5 (Client Manifest) by samzhang

4. Client Manifest As we discussed earlier, smooth streaming client starts streaming by first requesting the client manifest from the server using URL template: http://{serverName}/{PublishingPointPath}/{PublishingPointName}.isml/manifest . The client...
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How to Troubleshoot Live Smooth Streaming Issues? – Part 4 (Performance Counters) by samzhang

3. Performance Counters IIS Media Services also output some performance counters for tracking live smooth streaming status. When the publishing point is running, you should be able to see performance counters under “Live Smooth Streaming” category with...
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How to Troubleshoot Live Smooth Streaming Issues? – Part 3 (Event Logs ) by samzhang

2. Event Logs The next important place to check for live smooth streaming diagnostic information is the event viewer for windows event logs. In Event Viewer, go to “Windows Logs” –> “Application” and look for events from “IIS Live Smooth Streaming...
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How to Troubleshoot Live Smooth Streaming Issues? – Part 2 (Publishing Point UI and States) by samzhang

In Part one , we discussed basic data flow and protocols being used in IIS Live Smooth Streaming. In this blog, we will discuss where all the diagnostic information for live smooth streaming is available and how to make sense out of it. 1. Publishing...
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