\chapter{Keyframes}%
\label{cha:keyframes}
-The word \textit{keyframe} has at least 3 contextual meanings in the NLE environment. First, the oldest meaning, is the \textit{I-Frame} definition used in codecs algorithms. These are \textit{key} frames that begin a new sequence of pictures, and are anchor points for repositioning (seeks). Next are the automation parameter data points. These are usually input to primitive math forms, like translation and zoom. And last are blobs of data that are chunks of parameters to plugins that can do almost anything. The data can be a simple value, like a fader value, or more complex like a group of points and colors in a sketcher plugin keyframe. The word keyframe has changed a lot in meaning. In the context of \CGG{}, keyframes are data values that have been associated to the timeline which affect the media presentation. So a keyframe no longer refers to a frame, but to a position on the timeline.
+The word \textit{keyframe} has at least 3 contextual meanings in the NLE environment. First, the oldest meaning, is the \textit{I-Frame} definition used in codecs algorithms. These are \textit{key} frames that begin a new sequence of pictures, and are anchor points for repositioning (seeks). Next are the automation parameter data points. These are usually input to primitive math forms, like translation and zoom. And last are blobs of data that are chunks of parameters to plugins that can do almost anything. The data can be a simple value, like a fader value, or more complex like a group of points and colors in a sketcher plugin keyframe. The word keyframe has changed a lot in meaning. In the context of \CGG{}, keyframes are data values that have been associated to media on the timeline which affect the media presentation. So a keyframe no longer refers to a frame, but to a position on the timeline.
In \CGG{}, there are two general types of keyframe data,
\textit{automation keyframes} (autos) which are drawn as colored
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