Panasonic HVX200A Functions Guide - Page 14
Panasonic HVX200A - Camcorder - 1080p Manual
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2. Advantages of DVCPRO HD 2-2 DVCPRO's Intraframe Compression System: Designed to Retain All Image Information All DVCPRO equipment uses intraframe compression. Data is produced and compressed independently for each frame, even in the case of DVCPRO HD and the huge amount of data it captures. This helps maintain superior pictures, sound and reliability not only in nonlinear editing, but also in tape editing using VTRs. You get greater editing flexibility and higher-quality results. Compared to DVCPRO, an MPEG2-based system uses interframe compression. A number of frames are formed into a group (called a GOP, for group of pictures) for processing. In each GOP, only frame I (for Initial) contains the entire set of image data. The subsequent frames P (Prediction) or B (Bi-directional) include the data that is different from the data in frame I. 11