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1.1 Glossary

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This document uses the following terms:

Advanced Systems Format (ASF): An extensible file format that is designed to facilitate streaming digital media data over a network. This file format is used by Windows Media.

client: The entity that has created the logging message, or an entity that receives a logging message from a client. In the latter case, the client is a proxy.

content: Multimedia data. content is always in ASF, for example, a single ASF music file or a single ASF video file.  Data in general. A file that an application accesses. Examples of content include web pages and documents stored on either web servers or SMB file servers.

globally unique identifier (GUID): A term used interchangeably with universally unique identifier (UUID) in Microsoft protocol technical documents (TDs). Interchanging the usage of these terms does not imply or require a specific algorithm or mechanism to generate the value. Specifically, the use of this term does not imply or require that the algorithms described in [RFC4122] or [C706] must be used for generating the GUID. See also universally unique identifier (UUID).

Hypertext Transfer Protocol (HTTP): An application-level protocol for distributed, collaborative, hypermedia information systems (text, graphic images, sound, video, and other multimedia files) on the World Wide Web.

Internet host name: The name of a host as defined in [RFC1123] section 2.1, with the extensions described in [MS-HNDS].

Multimedia Messaging Service (MMS): A communications protocol that is designed for messages containing text, images, and other multimedia content that is sent between mobile phones.

playlist: One or more content items that are streamed sequentially.

proxy: An entity that can receive logging messages from both a client and a proxy, or from a server that is streaming on behalf of another server.

Real-Time Streaming Protocol (RTSP): A protocol used for transferring real-time multimedia data (for example, audio and video) between a server and a client, as specified in [RFC2326]. It is a streaming protocol; this means that RTSP attempts to facilitate scenarios in which the multimedia data is being simultaneously transferred and rendered (that is, video is displayed and audio is played).

server: An entity that transfers content to a client through streaming. A server might be able to do streaming on behalf of another server; thus, a server can also be a proxy. See [MS-WMLOG]

session: The state maintained by the server when it is streaming content to a client. If a server-side playlist is used, the same session is used for all content in the playlist.

stream: (1) A flow of data from one host to another host, or the data that flows between two hosts.

(2) A sequence of ASF media objects ([ASF] section 5.2) that can be selected individually. For example, if a movie has an English and a Spanish soundtrack, each may be encoded in the ASF file as a separate stream. The video data would also be a separate stream.

streaming: The act of transferring content from a sender to a receiver.

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.