Microsoft DirectX 8.1 (C++)

AMTimelineGroup Object

Sets and retrieves properties on groups in DirectShow Editing Services (DES).

A group contains one or more tracks, and possibly one or more compositions, which in turn contain source clips of a uniform type, such as video or audio. Groups are the topmost compositions in a timeline, and also support the AMTimelineComp object. A timeline can contain multiple groups.

Each group has the following attributes:

An associated media type.
The frame rate at which the group renders, in frames per second (FPS). All edits occur at a time rounded to the nearest frame boundary, as defined by the group's FPS setting.
A priority level, for writing files with multiple streams of the same media type (for example, a two-video-stream AVI file).

This object has the following methods.

Method	Description
ClearRecompressFormatDirty	Not supported for Visual Basic.
GetGroupName	Retrieves the application-defined name of the group.
GetMediaType	Not supported for Visual Basic.
GetOutputBuffering	Retrieves the number of frames rendered in advance during preview.
GetOutputFPS	Retrieves the output frame rate of this group.
GetPreviewMode	Retrieves the preview mode for the group.
GetPriority	Retrieves the group's priority.
GetSmartRecompressFormat	Not supported for Visual Basic.
GetTimeline	Retrieves the timeline to which this group belongs.
IsRecompressFormatDirty	Not supported for Visual Basic.
IsSmartRecompressFormatSet	Not supported for Visual Basic.
SetGroupName	Sets the application-defined name of the group.
SetMediaType	Not supported for Visual Basic.
SetMediaTypeForVB	Specifies the media type for the group.
SetOutputBuffering	Specifies the number of frames rendered in advance during preview.
SetOutputFPS	Sets the uncompressed output frame rate for this group.
SetPreviewMode	Sets the preview mode for the group.
SetRecompFormatFromSource	Sets the video recompression format using the compression format from a source file.
SetSmartRecompressFormat	Not supported for Visual Basic.
SetTimeline	Not supported for Visual Basic.

Requirements

Include a reference in your project to "Dexter 1.0 Type Library" (Qedit.dll).