--- In [email protected], Bhairitu <[EMAIL PROTECTED]> wrote: > > sparaig wrote: > > --- In [email protected], Bhairitu <noozguru@> wrote: > > > >> sparaig wrote: > >> > >>> --- In [email protected], Bhairitu <noozguru@> wrote: > >>> [...] > >>> > >>> > >>>>> Most of the features included in MPEG-4 are left to individual > >>>>> > >>>>> > >>>> developers to decide whether to implement them. This means that there > >>>> are probably no complete implementations of the entire MPEG-4 set of > >>>> standards. To deal with this, the standard includes the concept of > >>>> "profiles" and "levels", allowing a specific set of capabilities to be > >>>> defined in a manner appropriate for a subset of applications." > >>>> > >>>> --- cut--- > >>>> Do you see anything about QuickTime here? Do you really know anything > >>>> about video programming? Have you ever written a demuxer or muxer? Do > >>>> you know the MPEG format, sequence headers, etc? Have you ever written > >>>> a stream parser? > >>>> > >>>> Dream on. > >>>> > >>>> > >>>> > >>> Why so hostile? > >>> > >>> > >>> > >> I'm not being hostile but some of the stuff you're saying is like > >> someone who's never been to India telling me what India is all about > >> when I've been there. I've been on the steering committees for these > >> consortiums (not the MPEG-4 but some others). I've been to Apple > >> developer conferences and worked with Apple developer support. I've > >> developed on the Mac and in fact at the moment looking to pick up a used > >> Mac that can run OS X so that I can port some products to it. I have an > >> iMac here but I can't put OS X on it. The company I used to work for > >> started out very Mac centric. > >> > >> I also do some video development and had to even write a player for the > >> last product I did. I've also been working with digital video since > >> 1991 when I bought my first camcorder and capture box for the Amiga. > >> > > > > My first programming job was for Dave McClain, who helped finish AmigaDOS > > 1.0 for > > Commodore. We were doing software support for a video/accelerator card for > > Mac Plus > > and Mac SE. > > > > > > > >> Now if you want to talk about a superior computer, the Amiga was way > >> ahead of it's time (and the Lisa before that until Jobs killed it). > >> > >> > > > > Eh. At $10,000 per box, the original Lisa was a tad expensive for most > > people. NeXT was > > far better, but still too expensive at $7000 per box. The Mac Mini is many > > times more > > powerful and versatile than either machine except on expansion slots, and > > only costs 1/10 > > of the NeXT cube. > > > > > >> Answer me this: what is the primary difference between MPEG-2 and > >> MPEG-4? It's a very simple engineering idea which overcomes a > >> limitation of MPEG-2 and in itself gave MPEG-4 (also h.263) more > >> compression. > >> > >> > > > > The primary difference between MPEG-4 and MPEG-2 is NOT the compression- > > decompression algorithm (codec). That's just crazy. I.. mean... > > literally... crazy. > > > Nope, on the average an MPEG-4 file compresses about 1/3 the size of > MPEG-2 and you can use a lower bitrate. The first comparison I found > was unlike MPEG-2 you could have one frame repeat as much as 300 times > without repeating that frame in the file. If you have a static title > image that saves a lot of space in the file. That's just one simple > difference in the GOP structure and of course there is a lot more.
Er, um.... That's NOT the primary difference between MPEG-4 and MPEG-2. That's a relatively minor difference. If that was all that was important, they could have come up with MPEG-2 rev B or something. [...] > I think you could get a great gig at tech seminars.... as a geek > comedian. They'd have a great laugh at how you grasp technology. > Ooookaaay....
