Adobe Flash Media Server 3.5技术概览

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Adobe®FlashMediaServer3.5技术概述是一份由Adobe Systems Incorporate出版的文档，它详细介绍了Adobe Flash Media Server 3.5的技术特性、功能和最佳实践。这份文档版权属于Adobe，所有权利受2009年Adobe Systems Incorporate的保留，强调了在使用或复制该指南及其提及的软件时必须遵守Adobe的许可协议。未经书面许可，用户不得擅自复制、存储、检索或通过任何形式（电子、机械、录音等）传输内容，即使这些内容未随附最终用户许可协议的软件也一样。文档主要关注于技术层面，旨在为用户提供关于如何有效利用Flash Media Server 3.5进行媒体流处理、视频编码、直播和点播服务的指导。它可能包括对服务器架构、API使用、实时数据流处理、安全性和权限管理等内容的深入解析。由于其性质为技术性概述，内容可能会涉及服务器配置设置、性能优化策略以及与Adobe Flash Player和Flex应用程序的集成方法。由于版权法保护，用户不能将其视为法律建议，也不能视作对错误或不准确性的官方承诺。Adobe Systems Incorporate对文档中的信息不负责任，且声明该内容仅供信息性使用，可能会根据需要随时更新，不构成对产品或服务的任何形式的承诺。阅读这份技术概述对于开发者和管理员来说是至关重要的，它能帮助他们更好地理解和操作Adobe Flash Media Server 3.5，确保其在多媒体内容分发、互动应用和实时通信中的高效运作。在使用过程中，遵循文档的指导和许可条款是必不可少的。

FLASH MEDIA SERVER 3.5 TECHNICAL OVERVIEW

Introduction

What’s new in Flash Media Server 3.5

DVR functionality for live streaming

Flash Media Server 3. 5 allows users to pause live streams and continue playing from where they paused. Users can

seek anywhere in the stream. Developers can create experiences that support instant replay or catch-up services. You

can use edge caching to scale DVR functionality or to deploy on Content Developer Network.

Content managers can enable this feature on any number of streams on a server. You can make the entire live event

available, or only a section of the event. Either way, the video cache is on the server so content is protected. DVR

enabled streams support dynamic streaming.

Developers can inject cue points in the live video to trigger dynamic advertising. For example, when a user passes a cue

point, the advertising appears. Developers also can create interfaces that disable seeking during advertisements.

DVR functionality is supported in Flash Player 6 and later.

Dynamic streaming

Flash Media Server can receive commands to switch between versions of a single content stream that are encoded at

multiple bit rates. This feature lets your media application adapt to changing network conditions. It lets your

application adapt to clients with different capabilities, such as mobile devices with lower processing power and smaller

screens. You can use this feature to switch between live video encoded with multiple bit rates using Flash® Media Live

Encoder 3.0. You can also use dynamic streaming to swap content in a playlist upon events that you specify.

Dynamic streaming works with both FLV files and MP4/F4V files. No special encoding is required. Dynamic

streaming is supported in Flash Player 10 and later.

Integrated HTTP Server

All editions of Flash Media Server 3.5 include Apache HTTP Server. This feature lets you deliver client SWF files,

container HTML files, and all media assets from the same server. For media assets, you can use Flash Media Server to

stream media using RTMP. If streaming over RTMP fails, you can fall back to delivering content over HTTP on the

same server.

Use the File plug-in to retrieve external SWF files for verification

You can develop a custom File plug-in to retrieve SWF files that are stored in external content repositories or on

another server in a cluster. By retrieving SWF files with the File plug-in, the server can verify SWF files without

requiring copies of the SWF files on the server computer. This feature helps reduce the load on your network.

Get client statistics with the Authorization plug-in

When a client connects to Flash Media Server, the server tracks statistical data about the client. This statistical data

includes bytes in, bytes out, and so on. In Flash Media Server 3.5, the Authorization plug-in can retrieve client

statistical data from the server repeatedly without affecting server performance. This feature lets you create a custom

monitoring solution in the C++ application layer.

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