why isn't MPEG4 used to it's fullest ability???

[-i-]

having an arguement on another forum about **actual** MPEG4...

the way I understand it is that MPEG4 isn't even used right now, and if it is, it isn't controlled to the fullest. You should be able to manipulate and regenerate images on the fly. I also understand the the new MS codec is called mpeg-4, but it isn't at all, it's simply called that.

here's the debate:

http://www.hardforum.com/showthread.php?postid=3968366#post3968366

[Taric25]

Well, it seems most of the people don't understand true MPEG concepts. MPEG isn't just to compress movies so one dosn't have to store them uncompressed.

MPEG-4 is also so that one can:
"
• place media objects anywhere in a given coordinate system;

• apply transforms to change the geometrical or acoustical appearance of a media object;

• group primitive media objects in order to form compound media objects;

• apply streamed data to media objects, in order to modify their attributes (e.g. a sound, a moving texture belonging to an object; animation parameters driving a synthetic face);

• change, interactively, the user’s viewing and listening points anywhere in the scene. "

Think about it: MP3 is MPEG-1 tile layer 3. Have you ever even seen an MPEG-2 tile layer 3 file?

MP3 is not MPEG-3. MPEG-3 doesn't exist (for any known purposes). MPEG-1 can be decoded with regular multimedia software. MPEG-2 needs other things installed just so it will play. Both MPEG-1 and MPEG-2 program streams have a .mpg extention. MP4 is NOT MPEG-x tile layer 4, it's just another MPEG-4-type compression. If DivX is MPEG-4, why doesn't it use a program stream have an .mpg extention? Why is it that I can't encode MPEG-4 tile layer 3 audio?

The answer is that DivX is not real MPEG. MPEG-4 isn't used to it's fulest simply because it is so hard to impliment.

[diji1]

...and, uh, shoot-me-down if you think i am wrong, but how exactly are u going to apply these unused features in making a dvd *backup* ? It sounds like you can physically change attributes of the video and sound which means ud be editing the original source, right - not what i wanna do.

[-i-]

whether you wanna do that or not, it means some pretty amazing stuff can be done!!! Think of custom broadcasts where the images are specific to the viewers tastes (and think of the advertising fiasco that would follow!!;)

[diji1]

it means some pretty amazing stuff can be done!!! Think of custom broadcasts where the images are specific to the viewers tastes

i entirely agree with you after reading the article - it is capable ( in theory at least ) of alot more than it is used for. it's really something that content need to be especially made for the full capabilities to be realised tho - perhaps in some kind of interactive story perhaps. its quite interesting i think the potential.