Adobe is hosting webinars this week that introduce and explain the new multiscreen capabilities of the Flash Platform.
Optimizing Performance for the Adobe Flash Platform
Flash Player 10.1 管理指南
时间:2010-07-13 13:44 点击:0次
Flash/Flex/AIR developers: if you haven't already, check out the Adobe Flash Platform Services. They can help you add social and collaborative capabilities to your applications or websites, while also making it easier to distribute, track and earn money from them.
As of now there are three services: Promotion, Social, and Collaboration. Here's a little bit of information about each and links to the developer documentation.
Promotion Service offers both free and paid methods for promoting applications to more than 70 social networks and services, desktops, and (as of the recent 1.5 release) mobile devices. You can also track distribution of and user engagement with your applications, and earn money by hosting ads in them. Adding a Share menu to your application enables its viral distribution. Users can add your application to their social pages, mobile devices, or desktops through the Share menu. The Share menu can be added using the extensions to Flash Professional, Flex Builder 3, or Dreamweaver.
General information about the Promotion Service, including where to download extensions
Developer documentation
Social Service lets you integrate social networks such as Facebook, Twitter, and MySpace with your applications, increasing engagement with your apps and promoting them virally. You can integrate your application with multiple social networks using Facebook Connect, Sign-in with Twitter, and MySpaceID without writing separate integration code for each network.
The Social service consists of three parts:
- An ActionScript 3.0 API, which can be implemented in Flash or Flex, and aggregates the different social network APIs.
- Plug-and-play widgets that use the social API for login, share, invite, select friends and other commands.
- Dashboard analytics for reviewing and optimizing your app's social performance.
General information about the Social Service
Developer documentation
LiveCycle Collaboration Service lets developers add real-time collaboration and social capabilities to applications. Social games are a common example of this, but users increasingly expect real-time interactivity in areas such as online customer service, e-learning applications, etc.
General information about the Collaboration service
LiveCycle Collaboration Service Forum
Optimizing Performance for the Adobe Flash Platform
Until now, there have been two fundamental ways to deliver video to Flash Player/AIR:
- Progressive download. Progressive download transfers files sequentially over HTTP from a web server to Flash Player/AIR. Users can't skip ahead until all the previous content has downloaded.
- RTMP streaming. RTMP streaming transfers content between Flash Player/AIR and Flash Media Server in real-time (Real-Time Media Protocol). Users can skip to any location without waiting.
Now there's a third way to deliver content to Flash Player 10.1 and AIR 2:
- HTTP Dynamic Streaming. HTTP Dynamic Streaming delivers content over HTTP and lets users skip to any location without waiting.
Using Adobe HTTP Dynamic Streaming also contains a live tutorial, and detailed information about how this new solution works. To stream live content over HTTP, you need Flash Media Server 3.8.
For more information about the HTTP Dynamic Streaming ecosystem, see Kevin Towes' blog and www.adobe.com/products/httpdynamicstreaming.
We've just posted the Flash Player 10.1 Administration Guide. This doc describes Flash Player, how it's installed, how it works, and how you can control it to suit the needs of a specific network environment. This document is intended for IT or administrative professionals who manage the installation or use of Flash Player for multiple users in a controlled environment.
Flash Player 10.1 and Flash Media Server 3.5.3 support two exciting new buffer management features: Stream Reconnect and Smart Seek. To see them in action, check out this example: Stream Reconnect and Smart Seek example. Right-click on the example and choose View Source to see the code.
The example is also linked from the Flash Media Server 3.5.3 New Features Guide. This doc has all information you need about how to use the Smart Reconnect and Smart Seek ActionScript APIs.
Here's a quick, high-level view:
Stream Reconnect
With the release of Flash Player 10.1, you can deliver video players that continue to play media seamlessly when a connection is dropped or when a client switches from a wired to a wireless network connection. Adobe Product Manager Kevin Towes says:
We've essentially decoupled the buffer from the connection - which allows video to play back even if the connection drops. Developers can use ActionScript to reconnect to FMS and resume playback - and if this is done before the buffer empties, then there will be no perceived disruption.
Smart Seek
Flash Media Server 3.5.3 and Flash Player 10.1 work together to support smart seeking in VOD streams and in live streams that have a buffer. Smart seeking uses back and forward buffers to seek without requesting data from the server. You can step forward and backward a specified number of frames. (Standard seeking flushes buffered data and asks the server to send new data based on the seek time.) Smart seeking reduces server load and improves seeking performance. Use smart seeking to create:
•Client-side DVR functionality. Seek a live stream within the client-side buffer instead of going to the server for delivery of new video.
•Trick modes. Create players that step through frames, fast-forward, fast-rewind, and advance in slow-motion.
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