The standard term used by OMF Interchange to refer to an edited sequence made up of a number of clips. The OMF equivalent of a sequence in an Avid system. compression. 1. In audio, the process of reducing the dynamic range of the audio signal. 2. In video, a lack of detail in either the black or the white areas of the video picture due to improper separation of the signal level. 3. A reduction of audio signal details, video signal detail, or both to reduce storage requirements during transformation from analog to Avid digital format. In JPEG compression, for example, algorithms for variable frame length analyze the information in each frame and perform reductions that maximize the information retained. Compression does not remove any frames from the original material.
The transformation from one coordinate system to another, then from the second to a third, can be represented by a single transformation that is the composition of the two component transformations. Transformations are closed under composition. Composition is not commutative. Any arbitrary transformation can be built up by composing a number of simpler transformations, but that composition is not unique.