Bhairitu wrote: > sparaig wrote: > >> --- In [email protected], Bhairitu <[EMAIL PROTECTED]> wrote: >> >> >>> sparaig wrote: >>> >>> >>>> --- In [email protected], Bhairitu <noozguru@> wrote: >>>> >>>> >>>> >>>>> sparaig wrote: >>>>> However, what would MPEG-4 look like without QT? >>>>> Apple didn't develop MPEG-4. >>>>> >>>>> >>>>> >>>>> >>>> Pardon? The MPEG-4 file format is based on the QT file format. The beat >>>> out >>>> >>>> >> Microsoft's >> >> >>>> proposal (which was my point). >>>> >>>> >>> First off QT file format is what is known as a wrapper or container just >>> as AVI is wrapper or container. It can contain different media. I know >>> because I worked on QT file formats, know Apples use of pcode within >>> these formats so I could convert from their format to another. MPEG >>> standards for Motion Picture Experts Group who developed MPEG-1, MPEG-2 >>> and MPEG-4. It is a consortium and yes Apple contributed to it. MPEG-4 >>> is also known as h.264 which grew out of h.263. The latter is more open >>> source so companies like Divx, Adobe, and the open source Xvid use it. >>> Version 7 of Flash and earlier uses h.263. Adobe now uses On2 >>> technologies compression. Apple's big contribution to AV from my >>> recolletion was Firewire. >>> >>> >>> >> As I said, Apple's QuickTime file format is the basis for the MPEG-4 file >> format. Without >> Apple and QUickTIme, we would probably be using the MS format. >> >> http://en.wikipedia.org/wiki/QuickTime#QuickTime_and_MPEG-4 >> >> QuickTime and MPEG-4 >> >> On February 11, 1998 the ISO approved the QuickTime file format as the basis >> of the >> MPEG-4 Part 14 (.mp4) container standard. Supporters of the move noted that >> QuickTime >> provided a good "life-cycle" format, well suited to capture, editing, >> archiving, distribution, >> and playback (as opposed to the simple file-as-stream approach of MPEG-1 and >> MPEG-2, >> which does not mesh well with editing)... >> > Well Lawson Limbaugh bending things to fit your maya: > > http://en.wikipedia.org/wiki/MPEG-4 > > From Wikipedia, the free encyclopedia > > MPEG-4 is a standard used primarily to compress audio and video (AV) > digital data. Introduced in late 1998, it is the designation for a group > of audio and video coding standards and related technology agreed upon > by the ISO/IEC Moving Picture Experts Group (MPEG). The uses for the > MPEG-4 standard are web (streaming media) and CD distribution, > conversation (videophone), and broadcast television, all of which > benefit from compressing the AV stream. > > MPEG-4 absorbs many of the features of MPEG-1 and MPEG-2 and other > related standards, adding new features such as (extended) VRML support > for 3D rendering, object-oriented composite files (including audio, > video and VRML objects), support for externally-specified Digital Rights > Management and various types of interactivity. AAC (Advanced Audio > Codec) was standardized as an adjunct to MPEG-2 (as Part 7) before > MPEG-4 was issued. > > 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. > Plus I *already* said that Apple contributed to MPEG-4 development. Containers aren't anywhere near as complicated to develop as the actual compression algorithms used. In the bigger picture the container is really only a small part of the story. A fairly decent programmer could probably write several different containers on their own. These things are often decided in committee and there is a lot of politicking going on. Microsoft's RIFF format which is used in AVIs is based off the IFF format that was on the Amiga. The RIFF format definitely had it's flaws. The MPEG-1 and MPEG-2 headers are a nightmare of bit packing.
And BTW why the hell didn't you just go look at Apples own site on MPEG-4: http://www.apple.com/quicktime/technologies/mpeg4/ Oh that's right, they don't brag all over the place that they invented it so it doesn't fit your argument.
