MP3 / Digital Formats White Papers
An Analysis of MPEG Encoding Techniques on Picture Quality
Overview MPEG introduces a new variable - temporal compression. Now you can improve quality by changing either the data rate or length of the group of pictures (GOP) over which redundant picture information is removed. A quick recap of compression variables will help us further understand their impact on picture quality. Some pundits have proposed that MPEG would provide the same quality at half the JPEG data rate, but the vote is still out on that one.This paper will explore Tektronix PQA200 Picture Quality Analysis System and how it can be used to measure the video quality of material that has been digitized and compressed using the new PDR300 MPEG based Profile Video File server. We will compare the results of a series of experiments contrasting the quality achieved using JPEG and MPEG compression, 4:2:2 vs. 4:2:0 sampling, the impact of GOP structure, and the differences in using different types of video source material.
| Publisher | Grass Valley Group | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | June 1998 | Downloads | 17 |
| Format | White Papers | ||
| Topics | |||
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