mpeg4?

Maver · Post by **Maver** » Sun Jul 18, 2004 10:39 am

i hear all this stuff about mpeg4 in the guids, is it like mpeg2?, and talking about xvid being mpeg4 along with divx 3-5 and some windows codec. so i'm just wondering wat is this mpeg4 thing cuzz the tutorals i read didn't explane much about it (though it did a very nice job with explaing mepg1 and mpeg2)

thanks for the help!

Kalium · Post by **Kalium** » Sun Jul 18, 2004 10:45 am

MPEG4 is a standard for video compression. XviD and DivX are implementations of it.

Scintilla · Post by **Scintilla** » Sun Jul 18, 2004 12:44 pm

It's also a container, about which I don't know anything.

bum · Post by **bum** » Sun Jul 18, 2004 1:07 pm

hu ? mpeg4 is a container ? never heard that before

Tab. · Post by **Tab.** » Sun Jul 18, 2004 1:11 pm

Shit... guides... must write...

aznfs · Post by **aznfs** » Sun Jul 18, 2004 2:47 pm

Tab. wrote:Shit... guides... must write...

write them

Kalium · Post by **Kalium** » Sun Jul 18, 2004 6:08 pm

Yes, Tab, write them and stop just mentioning them in passing.

Zero · Post by **Zero** » Sun Jul 18, 2004 7:30 pm

Standard MPEG 4, (writen as .mp4 and .m4a) was originaly created by Apple computer systems. While this compression system is not farily new, it has yet to actualy have more widespread used like other more popular compressions in general, mainly XviD and DivX (Notice if you reverse one you get the other?). I'm sure I can dig up some more info here.

-Zero

ajew · Post by **ajew** » Sun Jul 18, 2004 9:43 pm

Mpeg 4 also runs nicely with aac 8).

sysKin · Post by **sysKin** » Sun Jul 18, 2004 9:56 pm

Perhaps I'll explain?

MPEG4 is a multimedia standard, more formally known as ISO-14496.

It consists of several parts, such as:
- ISO-14496-1, known as "MPEG-4 Systems", describes lots of things, like mp4 container.

- ISO-14496-2, known as "MPEG-4 Visual", describes a video compression standard - the one implemented by divx 4,5, xvid, 3vix, nerodigital, etc.

- ISO-14496-3, known as "MPEG-4 Audio", describes AAC audio compression.

I hope that helps,
Radek