MPEG encoding algorithm with scene adaptive dynamic GOP structure
Akio Yoneyama, Yasuyuki Nakajima, Hiromasa Yanagihara, M. Sugano · 1999
Although a GOP (group of picture) length is often fixed in MPEG, this may not guarantee the best picture quality from the point of view of coding efficiency. Furthermore, it is also well known that P-picture interval M=3 does not provide the best quality for all sequences. We propose an MPEG encoding algorithm with scene adaptive dynamic GOP structure to enhance the picture quality in the cases mentioned above. Using macroblock characteristics such as luminance activity and simple motion compensation on the activity domain, N and M values are dynamically determined.