
Originally Posted by
hemant.nikalje
Boss I am Electronics and Telecomm. engg with special subj on Audio and Video Engg. We eat, sleep, bath in these latest technology releasing. We were very well know pros and cons of every system that is related to our field because we have studied every latest technology before it comes in market to common user. MPEG4 is the best technology; people do have a great misconception in the mind regarding this. I would like to explain it from common man’s perspective what it is about? Its not mere compression technique as it is published in news paper or what others say. I would like to explain in simple terms so that even lay man can understand without getting into technical details of MPEG4 if u wish me to go into technical details then I can tell u that too in next reply.
Common problem that TATA SKY OR DISH TV encountered while using DTH service to HDTV or even any LCD or PLASMA or say even 32"inch normal TV.
1) There was great loss of pixelation in it.
2) Loss of reception while rain.
Reason for this:
1) Severe pixelation was occurring because that setup box was prepared some 3-4 yrs back when MPEG2 technology was latest and that technology was best suited only for normal 21"inch or at the most 29”inch TV and not for LCD as it was bound to have severe loss of signal quality because MPEG 2 technology is now outdated technology which from now on no user will ever prefer to use (Foriegn people have discarded this technology much before only from market). Due to (a) Severe loss in pixelation (or picture quality) when connected to any LCD TV. Basically, MPEG 2 technology was not advance to provide great picture quality.
Now coming to MPEG4, because of advent of MPEG4 technology now user has greater choice of channel viewing as number of channel that can accommodate a single bandwidth increases in a great manner. So, one can get more than double channels that one can receive using MPEG2 technology without having serious loss of picture signal. The greatest drawbacks of MPEG2 technology is if the service provider tries to increase his capacity of channels in a given allocated bandwidth then signal quality reduces drastically. So, in future MPEG2 technology has no scope at all.
Why MPEG4 technology solved pixelation problem?
Its the same reason why normal 21inch" ppl sifting to 1920*1080p i.e FULL HD TV. The MPEG4 technology allowed stronger compression format means more number of channels can be accommodated in a particular bandwidth and greater u can say 10 to 100 times stronger signal and picture quality.
In short, for lay man, ONE EXAMPLE WILL SUM UP EVERYTHING,
FIRST EVERY ONE USED CD BECAUSE CD WAS LATEST FORMAT THAN ITS COUNTERPART VCD AND AT THAT TIME PEOPLE USE TO THING CD HAS AMAZING PICTURE QUALITY THAN VCD'S BUT THEN EXPERTS CAME UP WITH DVD AND THERE WAS GREAT REVOLUTION IN MARKET AS IT PROVIDED GREATER COMPRESSION FORMAT( FIRST ONE MOVIE WAS FITTING IN 2 CD’S AND THEN CAME DVD WITH 4 TO 5 MOVIES IN A SINGLE DIC WITH GREATER PICTURE AND AUDIO QUALITY THAN CD) AND 100% MORE BETTER PICTURE QUALITY THAN CD. SO THERE MAIN AIM OF GETTING MORE COMPRESSION DONE AND ACHEIVING 100 TIMES MORE BETTER PICTURE WAS ACHIEVED, SAME THING IS NOW WITH MPEG4 FORMAT. NOW U DECIDE, WHAT U WANT? DO U STILL WANT TO STICK TO MPEG2?