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Posted by audiohead on 03/19/06 18:18
Jeff wrote:
> On Wed, 08 Mar 2006 17:45:19 +0800, Man-wai Chang wrote:
>
> > audiohead wrote:
> >> MPEG-4 replaced the "ultimate mp3 experience" a long time ago. Dude,
> >> MP3 and Winamp are fucking dinosaurs like Dadion.
> >>
> >>
> > What're the advantages of MP4 against MP3? And it seems that MP4 is a M$
> > standard, not intended for free+public use.
>
> "MPEG-4 Part 14, formally, ISO/IEC 14496-14:2003, is a multimedia
> container format standard specified as a part of MPEG-4. It is
> most-commonly used to store digital audio and digital video streams,
> especially those defined by MPEG, but also can be used to store other data
> such as subtitles and still images. Like most modern container formats,
> MPEG-4 Part 14 allows streaming over the Internet. The official filename
> extension for MPEG-4 Part 14 files is .mp4, thus the container format is
> often referred to simply as MP4."
>
> "While the only official file extension defined by the standard is .mp4,
> various file extensions are commonly used to indicate intended content.
>
> * Audio generally uses the .mp4 and .m4a extensions.
> o Audio that is protected by FairPlay digital rights management
> as sold through the iTunes Music Store uses the .m4p extension.
> o Audio book and podcast files, which also contain data such as
> chapter markers, images, and hyperlinks, use the .m4b extension.
> * Video generally uses the .mp4 and .m4v extensions, sometimes also
> .mp4v. * 3G mobile phones use 3GP, a simplified version of MPEG-4 Part
> 14, with the .3gp and .3g2 extensions. These files also store
> non-MPEG-4 data (H.263, AMR, TX3G).
>
> The common, but non-standard use of the extensions .m4a and .m4v is due to
> the popularity of Apple Computer's iPod and the iTunes Music Store."
>
> (from Wikipedia)
And what exactly is the point of all this useless verbiage?
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