Talk:MPEG-4 Part 14

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This is the talk page for discussing improvements to the MPEG-4 Part 14 article.
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I removed the following block because this this is talking about the MP4 container, which has nothing to do with the MP3 format. Peter Nelson 01:40, 27 December 2005 (UTC)

*.mp4 is most commonly used as the alternative to *.mp3 on an Apple iPod and in iTunes. The quality of the AAC codec that is stored in *.mp4 is higher than MPEG-1 Audio Layer 3, although not as widely used in computer and hardware players as the *.mp3.

Contents

[edit] Improvments over .mov ?

Just looking at the comparison of container formats page, it appears that not only does mov have all of the features of mpeg-4, but that it actually has more features than mpeg-4. Unless someone can write what these "Improvements" are, I'm going to remove that phrase. -Ctachme 15:36, 1 June 2006 (UTC)

[edit] 3GPP is based upon ISO/IEC 14496-12 not 14

3GPP as numeros docs that you can find in the 3gp website is based upon MPEG4/JPEG2000 Part 12 file format (also know as ISO media base file). MPEG-4 Part 14 is derivated from the Part 12 just like the 3GPP file format do. So I correct this line: "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)."

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[edit] AC3 in Nero Digital?!?! LOL

I'm the guy that made the changes to the 3GPP description. Nero Digital supports AC3 in MP4?!?! Don't make me laugh! It supports Vobsubs in MP4, it doesn't support AC3 at all. It supports also chapters, via UDTA, it doesn't use a private stream for it (while in the M4B is possible to place chapters with the text stream (that it's not a private stream, it's definited in the mp4 standards, at least Apple says so in their www.mp4ra.org website).

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[edit] Comparision with mp3

I think the article would benefit by drawing a distinct line between mp3 and mp4. There seems to be a lot of confusion regarding players which are capable of mp3 playback and mp4 playback. Chris 13:50, 4 December 2006 (UTC)

[edit] Not much info

Methinks this should be expanded. Is it just me or is there no info on MP4 on the Web?? Junkbot44 14:00, 9 December 2006 (UTC)

[edit] Download

How do you download the song?

[edit] help... anyone??

i recently purchased this so called mp4/mp3 player and now i cant get my files to play on it. windows media files dont play at all, which is bothersome enough, but now even my mp3's wont play and i get a "format error" message. mp3's were no problem to load on the player the first time around and nothing is different, it is just not accepting the files. does anyone know what's going on? as with everyone else's comments, there is nothing in the manual that is even close to troubleshooting. Onealjs 04:14, 31 January 2007 (UTC)

[edit] Help

You probably need to get a file converter. You can get one free at download.com, and convert them into something that your MP4 Player recognizes. If not- try contacting the manufactuer.

Also- I recently bought a MP4 Player. Somebody ought to submit a whole new article about this. This doesn't help at all.

MP4 Devices and marketing

There's a lot of marketing of "MP4 players" . They are marketing them as superior devices over MP· Players just because the MP4 number over the MP3 one. These should be discussed here in my opinion. 6:30, 26 May 2007 (UTC)

Are you referring to this? Chinese MP4/MTV Player --Mcoder 11:07, 19 July 2007 (UTC)

[edit] m4r VS m4a

I was reading the part about how iPhone uses ringtones with an m4r extension, instead of an m4a extension. If you made an m4r file (in iTunes, for example), would this work with other phones that support using custom ringtones? Or would you have to change it to an m4a file, and if you do have to change it, can you just change the file name as described for changing audiobooks from m4a to m4b, or do you need a special converter program (if one were to exist)? Thanks for any help. 69.204.194.148 (talk) 14:02, 27 April 2008 (UTC)

[edit] Status of "MP4" abbreviation

The term MP4 is not an official synonym of MPEG-4 or the standard file extension for MPEG-4 format files. By contrast "MP3" is the de facto standard file extension ".MP3" for MPEG-3 format files. Hence the more general use of the term "MP4 player" for all video players is not technically incorrect, although it risks people making the assumption that MPEG-4 format files will be supported directly.Elroch (talk) 12:43, 6 May 2008 (UTC)