Bit Rate Throttling Configuration Walkthrough : Bit Rate Throttling : Serving Media Content. The Bit Rate Throttling extension for Internet Information Services (IIS) 7.0 provides the ability to throttle progressive downloads of media files (in which audio/video playback starts as soon as sufficient data has been buffered on the client) based on the content bit rate. For sites that deliver audio and video files that may not be watched in their entirety, this extension can significantly reduce your media-related bandwidth costs. A secondary feature of Bit Rate Throttling is that it can also be used to throttle non-media ("Data") file types at specified bit rates.
For media files, automatic bit-rate detection and throttling are executed according to settings specified in the IIS 7.0 configuration settings. New settings can be added, and existing settings can be adjusted, to achieve significant bandwidth savings without compromising the user experience. The list of supported media file types is determined by the settings in the IIS configuration file. .asf .avi .flv .m4v .mov .mp3 .mp4. Performance Tuning for On-Demand Smooth Streaming - Sam Zhang's Blog.
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. You just need to copy your content to the server and then everything should just work. For low volume usage, that’s pretty much all you need to care about. But if you are doing serious production systems with a large content library and significant client traffic, you would want to tune the system to its best performance in which case this blog post should be helpful to you. First let’s take a quick look at what’s the typical server logic when serving On-Demand Smooth Streaming requests:
Smooth Streaming. Overview Smooth Streaming, an IIS Media Services extension, enables adaptive streaming of media to Silverlight and other clients over HTTP.
Smooth Streaming provides a high-quality viewing experience that scales massively on content distribution networks, making true HD 1080p media experiences a reality. Smooth Streaming is the productized version of technology first used by Microsoft to deliver on-demand video of the 2008 Summer Olympics for NBCOlympics.com. By dynamically monitoring local bandwidth and video rendering performance, Smooth Streaming optimizes content playback by switching video quality in real-time.
Viewers with high bandwidth connections and modern computers can experience full HD 1080p quality streaming, while others with lower bandwidth or older computers receive an appropriate stream for their capabilities. Smooth Streaming provides media companies with a better way to make full HD on the web a reality. Notes de publication des services Windows Media 2008. Mis à jour: avril 2010 S'applique à: Windows Server 2008, Windows Server 2008 R2 Dernière mise à jour : février 2008 Cette documentation fournit des informations récentes qui complètent la documentation des services Microsoft® Windows Media® 2008.
Présentation des Services de diffusion multimédia par flux. IIS Media Services 4. IIS Media Services est une extension pour le serveur Web Internet Information Services (IIS).
Cette extension permet d’optimiser le transfert des données multimédias vers les clients en fonction de leurs configurations (CPU, Bande Passante, etc…). Afin de profiter de toutes les capacités de IIS Media Services, il est recommandé d’utiliser un client Silverlight compatible. D’autres extensions peuvent s’ajouter à l’utilisation de IIS Media Services afin d’augmenter les possibilités (Advanced Logging, Transform Manager, Application Request Routing, etc…). IIS Media Services 4.0 disponible en téléchargement. Rôle Services de diffusion multimédia par flux. Le rôle Services de diffusion multimédia par flux dans le système d’exploitation Windows Server® 2008 inclut le service de rôle Serveur Windows Media, qui est requis pour déployer votre ordinateur serveur en tant que serveur Windows Media.
Ce service de rôle inclut les Services Microsoft® Windows Media® 2008, qui constituent une plateforme à usage industriel pour transmettre en continu du contenu multimédia numérique en direct ou à la demande, notamment des fichiers audio WMA et vidéo WMV, sur des réseaux. À quoi sert ce composant ? Media Services 4.0 and stale audio chunks. Manage smooth streaming cache settings - optimize performance. Smooth Streaming Page. Updated: June 10, 2010 Applies To: Windows 7, Windows Server 2008, Windows Server 2008 R2, Windows Vista Use this feature page to configure cache options and values that increase Web server performance, reduce latency in the HTTP response to clients, and control how clients can cache the Smooth Streaming content that they receive.
The following tables describe the UI elements that are available on the feature page and in the Actions pane. Use the Server Cache Settings area to configure output caching to improve Web server performance and reduce latency in the HTTP response to clients. Use the Fragment Metadata Memory area to specify the amount of server memory to use for caching Smooth Streaming fragment data (metadata and indexes).
Use the Fragment Cache Threshold area to create a fragment-caching threshold rule that specifies which video fragments are cached.