S

seekable renderer: A renderer that reports EC_COMPLETE once when all seekable streams on that filter have reached the end of the stream. A seekable renderer is a renderer that supports the IMediaPosition object from the filter and has only input pins, or is a renderer whose input pins report that they are rendered. If the streams in a filter graph detect the end of the stream, the streams report it with the EC_COMPLETE event notification. The filter graph asks filters if they can report EC_COMPLETE through a seekable renderer.
servo: The electromechanical system that maintains the proper speed and phase of a VCR's video head and tape transport.
sink file: The current file into which media samples will be written.
source filter: A filter that takes data from some source such as the hard drive, network, or the Internet, and introduces it into the filter graph.
stream notification: An event that occurs in the media stream and is passed from one filter to the next.
stream time: A time that represents the time the since the filter graph was last started. By by definition, stream time is equivalent to reference time minus start time when the graph is running. Stream time is relevant only within a running filter graph. When a filter graph is run, each filter is passed a start time based on the reference clock, and the packets of data that a filter receives will normally be time-stamped with the stream time.
subtype: A GUID value that describes the specific format of media data for a data stream. Typical values include MEDIASUBTYPE_MJPG, MEDIASUBTYPE_RGB8, MEDIASUBTYPE_RGB565, MEDIASUBTYPE_MPEGPacket, MEDIASUBTYPE_Avi, and MEDIASUBTYPE_WAVE.
sync source: See reference clock.