It is divided into the following sections.Īlthough this document contains information about the latest version of the Windows Media Format SDK, most of the features it describes are supported by older versions of the SDK. This document describes how you can develop digital media applications using the Windows Media Format SDK. To download the Windows Media Format SDK, see the Windows Media Downloads page at the Microsoft Web site. This SDK provides methods for reading and writing ASF files and network streams that are protected by Digital Rights Management to prevent unauthorized playback or copying of the content. Support for Digital Rights Management protection.Applications built with the Windows Media Format SDK can also edit metadata attributes in MP3 files using built-in support for the most common ID3 tags used by content creators. This SDK provides integrated support for reading MP3 files with the same methods used to read ASF files. Support for reading and editing metadata in MP3 files.In addition, files created by using the Windows Media Format SDK can maintain timestamps in formats used in film and television production. This SDK enables applications to seek to points within a file by presentation time and by video frame. Support for content editing applications.Developers can use the robust system of metadata attributes included in the SDK, or create custom attributes to suit their needs. Information about a file and its content is easily manipulated with this SDK. Support for editing metadata in ASF files.This SDK provides support for delivering ASF data through HTTP to remote computers on a network, and also for delivering data directly to a remote Windows Media server. Support for delivering ASF streams over a network.The reader automatically selects which MBR stream to use, depending upon available bandwidth at the time of playback. Support is also provided for many advanced reading features, such as native support for multiple bit rate (MBR) files, which contain multiple streams with the same content encoded at different bit rates. This SDK provides support for reading local ASF files as well as reading ASF data being streamed over a network. This SDK can be used to write files in excess of 2 gigabytes, enabling longer, better-quality, continuous files. Files are created based on customizable profiles, enabling easy configuration and standardization of files. ![]() This SDK also includes the Microsoft Windows Media Video 9 Screen codec for compressing computer-screen activity during sessions of user applications, and the Windows Media Audio 9.1 Voice codec, which encodes low-complexity audio such as speech and intelligently adapts to more complex audio such as music, for superior representation of combined voice-music scenarios. New for this release is the Windows Media Video 9 Advanced Profile codec, which provides optimizations for broadcast video. Both of these codecs provide exceptional encoding of digital media content. The Windows Media Format 11 SDK includes the Microsoft Windows Media Video 9 codec and the Microsoft Windows Media Audio 9.1 codec. The key features of the Windows Media Format SDK are: ![]() For more information about the Advanced Systems Format container structure, see Overview of the ASF Format. However, ASF can contain any type of data. These files and streams commonly contain audio and video content encoded using the Windows Media Audio and Video codecs. The primary purpose of the Windows Media Format SDK is to enable developers to create applications that play, write, edit, encrypt, and deliver Advanced Systems Format (ASF) files and network streams. ![]() ![]() The objects of the Windows Media Format SDK manipulate the components of Windows Media at a low level the other components of the Windows Media SDK include objects that work on a higher level. These components include the Advanced Systems Format (ASF) file container, the Windows Media Audio and Video codecs, basic network streaming capability, and digital rights management. The Windows Media Format SDK provides application developers with access to the components of the Windows Media Format. Other components include the Windows Media Services SDK, Windows Media Encoder SDK, Windows Media Rights Manager SDK, Windows Media Device Manager SDK, and Windows Media Player SDK. The Windows Media Format SDK is a component of the Microsoft Windows Media Software Development Kit (SDK). This documentation describes the Microsoft Windows Media Format Software Development Kit (SDK) and applies to the 32-bit and 圆4-based versions of the SDK.
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