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Old 07-04-2006, 11:54   #143
popper
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Cool Re: Where Is Hdtv From Ntl.....when?

Quote:
Originally Posted by Mails Crushed
MPEG-2 quality it much better than MPEG-4.
The purpose of MPEG-4 is to create a watchable image at extremely low bandiwdth....
well this reply is more for the readers info, rather than correct you as someone already did.

the facts dont support your assumption and thats all it is.

first as i posted above mpeg-4 (i noticed you went to the trouble of putting in the minus LOL) is NOT mpeg-4 -part10-
the real HD TV h.264, aka AVC, standard.

second " The purpose of MPEG-4 is to create a watchable image at extremely low bandiwdth...." is wrong, the newer
DVB-H (h for handheld as apposed T,C or S) is to cover that
aspect but again only to a degree depending on bandwidth available to the wireless and other phone,etc networks.

the real h264 encoder has far more control and finer block patten than the old-hat mpeg-2 , so hence if you start with a lossless encoded (their still very large files) video file and encode that file with both mpeg2 and h264 at the same bit rate, and other high grade settings then the h264 file will always look and in fact be better and smaller by an average 50% or more.

if you start with a high grade mpeg2 file and re-encode that to h264 with high settings then again within resonable perception that resulting h264 file will be just as good looking and smaller than the mpeg2.

however starting with an older what people wrongly call mpeg4 but infact are Xvid/DivX will become usually werse that the original at far less space saving so dont make that mistake and wast effort and time.

hope thats clearer for people that like learning something new.

remember it h.264 or AVC people.......
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