IIS Smooth Streaming
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IIS Smooth Streaming is an extension of Microsoft IIS web server that enables live or on-demand media content delivery over the internet in HD quality. It adapts streaming quality based on viewer conditions, and supports protocols like RTP, RTSP, and HTTP for efficient media delivery. Key features include simultaneous streaming from different angles, encoding capabilities with Microsoft Expression Encoder, and deployment methods for both live and on-demand scenarios.
IIS Smooth Streaming
- 1. IIS Smooth StreamingBy: Hossein SARSHARMCP Since 2004
- 2. Basic DescriptionIIS Smooth Streaming is an extension of Microsoft IIS web server 7.0 or 7.5 (or later) to deliver live or recorded (on-demand) media contents over the internet at HD quality.Streams based on the following conditions of viewers:CPU conditionBandwidthCapability of their display device
- 5. Overview of basic networking termsApplicationTransportNetworkData-linkPhysical
- 7. Uses port number to communicate with its corresponding application layerprogram
- 8. Full duplex
- 10. Uses port number to communicate with its corresponding application layerprogram
- 11. Best effort
- 13. not reliableHistory of media streamingThe first Internet video streaming:Victoria’s Secret annual fashion show at NCY 1999.
- 14. RTP and RTSPThese are the first protocols in media streaming.RTP: Based on UDPStarts its communication without any connection establishment.UnreliableFastRTSP:Based on TCP.Has communication with server.State-full.Communicating with sender.walking carefully is better that running with closed eyes
- 15. HTTP Based protocolsHTTP:TCP based protocol.Is easily passed through routers and firewalls (TCP:80).But stateless ….
- 16. Progressive DownloadA simple file download from an HTTP Web server.Progressive download is supported by most media players and platforms, including Adobe Flash, Silverlight, and Windows Media PlayerCan also seek to positions in the media file that haven't been downloaded yetYouTube, Vimeo, MySpace, and MSN Soapbox, almost use progressive download.Downloads all of the media even if player is paused.
- 18. Adaptive StreamingHTTP based file download.Performs media download as a long series of very small progressive downloads (Chunks).Chunks are typically 2-to-4-seconds long as GOP (Group of Pictures).Server adapts the quality of its chunks according to the receiver’s capability in receiving data. (No need to change the bit-rate)IIS Smooth is and example of adaptive streaming.If you pause, only some seconds are buffered.
- 19. RequestChunck of dataProgressive download of small chunks
- 20. Adaptive part of the storyRequest 720pRequest 420pRequest 1080pChunck of data
- 22. IIS Smooth StreamingMicrosoft Expression Encoder
- 23. FeaturesStreams MPEG-4 chunks (H.264 video codec).They are created virtually upon each request.No buffer.It is possible to have other encoders.You can view videos in different platforms instead of Silverlight.Simultaneous streaming with different video angles.Translation scripts and different languages.Media advertisement.Multi channeling.….
- 24. Use Cases 2008 Summer Olympics in Beijing and NBC Sunday Night Football
- 25. Use Cases2010 FIFA World Cup Silverlight Smooth Streaming Player with Live MessengerRead more on http://www.iis.net/media/showcase
- 26. DeploymentTwo methods for deployment:On-demandLiveOn-demand:It is possible on Windows Vista sp1, Windows 7, and Windows Server 2008Install IIS server 7 or 7.5Installing IIS Media Services 4.0 on IIS.
- 28. Encode VideoResulting files after encoding with Expression blend:*.ismv (Audio + Video)*.isma (Audio)There will be an encoded file for each bit-rate.*.ism “XML based file that describes the relationships between the media tracks, bit rates and files on disk”IIS uses this file*.ismc “XML based file that describes the available streams to the client”Clients use this file
- 29. PlayerSilverlight player:There is an open source project called SMF (Silverlight Media Framework) in order to start and test streaming.Or anything that supports: VC-1/WMA/H.264/AAC decoding and HTTP transport
- 30. DemoIn the next article :D
- 31. Player ArgumentsMediaUrl: Location of media XML fileDeliveryMethod: “Adaptive”or“Progressive Download”AutoPlay: it is true by default ThumbnailUrl: Thumbnail picture before being played.
- 32. JavaScript Methodsvar Player = null;function onPlayerReady(playerArg) { Player = playerArg; }//The event handler of Player Loadthat is useful to access the player’s object.function Play() {Player.Play();}//Simple way to call player’s Play method.<input type="button" value="Play" onclick="Play()" />
- 34. Q & A