macroblock decision models (efficient, but does it also optimise the ripple effect on subsequent macroblocks ?
• rate control and buffer management in editing environments (MPEG: video only exists within a sequence. Real world: decoder are displaying picture from previous sequence, while reconstructing a picture from the new sequence) • implementation complexity reduction (“let’s run it on a Pentium!”). Are some encoders better than others ? A. Definitely. For example, the motion estimation search range of a has great influence over final picture quality. At a certain point a very large range can actually become detrimental (it may encourage large differential motion vectors, which consume bits). Practical ranges are usually between +/- 15 and +/- 32. As the range doubles, for instance, the search area quadruples. (brain reminder: like the classic relationship between in increase in linear vs. Area ?!?). Rate control marks a second tell-tale area where some encoders perform significantly better than others. And finally, the degree of “pre-processing” (now a popular buzzword in the business) sig
Related Questions
- What decision making authority does the SRT leader have?----Does he or she make decisions on reform models, if so, how?
- macroblock decision models (efficient, but does it also optimise the ripple effect on subsequent macroblocks ?
- What is the difference between normative and rational models in decision making?
