what format is DVD in? MPEG 2?? or else?

[j@cko]

what's the compression ratio of MPEG 2 compare to Divx (MPEG 4)??

 

[Sohcan]

Yep, DVDs use MPEG2; the compression rates are usually between 3mbit/sec and 9 mbit/sec. DivX goes up to 6mbit/sec.

 

[Soccerman]

well it depends on the bitrate you are running Divx at.

if you are aiming for the same resolution as DVD (720X480) with a DivX file, with the best quality you can get, you have to find the bitrate it results in.

 

[j@cko]

ok, so it's IMPOSSIBLE to put a DVD on a CD with MPEG 2...

 

[MGMorden]

Unless it's REALLY short . If you want to backup a DVD to a CD Divx is what you want to use.

 

[Mday]

you can essentially put a DVD in MPEG 2 into a CD. but the resolution would be super low, and the compression would be high, with a very low bitrate. so it'd suck ;-)

i'd put the movie into several CDs in MPEG2. or even divx. since if you really compress a movie using divx onto a CD, the quality leaves a lot to be desired =)

note, MPEG4 is from microsoft, and is not really MPEG, it's an "AVI" type format.

btw, i am very excited after hearing sometime back of hardware MPEG4 acceleration =), but i think that was just a rumor ;-)

--

of course you'd have to compress the audio too ;-)