MP4 Audio Help: DivX Can't Recognize AAC Format

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Discussion Overview

The discussion revolves around issues related to playing MP4 files, specifically focusing on audio formats and codec compatibility. Participants share their experiences with various media players and codecs, seeking solutions for playback problems.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant expresses frustration that DivX player does not recognize AAC audio in MP4 files, suggesting that it only supports MP3 audio.
  • Another participant questions the difference between MP4 and MP3, indicating a lack of understanding of the formats.
  • Some participants suggest ensuring the latest DivX codec is installed, while others mention issues with Windows Media Player 9 and its inability to play MP4 files.
  • A participant mentions using PowerDVD and Nimo codec pack, noting potential conflicts between codecs that may affect playback.
  • There are references to GSpot as a tool for identifying codecs, with one participant sharing their experience of resolving audio issues by identifying missing codecs.
  • Some participants report success with QuickTime playing MP4 files, while others encounter problems with QuickTime claiming files are not valid MPEG-4.
  • One participant seeks help for converting MP4 files to AVI format, indicating a need for assistance with file compatibility.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best solution for playing MP4 files, with multiple competing views on codec usage and player effectiveness remaining unresolved.

Contextual Notes

Some participants mention limitations with specific versions of media players and codecs, as well as issues with file integrity and format recognition, but these points remain unverified.

Who May Find This Useful

Individuals experiencing playback issues with MP4 files, those interested in codec compatibility, and users seeking to understand the differences between audio formats may find this discussion relevant.

Pauly Man
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I can't play MP4's with audio! Wherever I look it tells me that divx player can only play MP4 with mp3 audio, but that the standard audio format for MP4 is AAc, which dvx can't recognise, stupid I think. Everyone also says that MEdia player will play MP4 files, which it doesn't for me! I have WMP 9, any help would be appreciated.
 
Computer science news on Phys.org
what is MP4?
I know MP3.
are they the same?[?]
 
You mean divx? Do you have the latest codec? Divx5? www.doom9.org[/URL]
 
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Yes I have the latest divx codec. But windopws media player will not play mp4, neither will real player, or quick time, or divx player! Everyone else seems able to play them fine. But I've heard media player 9 is nothing but trouble, typical that I'm stuck with that one.
 
Originally posted by Saint
what is MP4?
I know MP3.
are they the same?[?]

http://www.m4if.org/mpeg4/?PHPSESSID=d358872c0fbe2a6f5ee18ead036fbf3c
 
Last edited by a moderator:
Hey there

I think I am playing Mpeg4 on my pc ( I am if that movie I tested with really is MPeg4... ) I use PowerDVD and Nimo codecpack 5 build 7. I also have Divx502 installed, but that shouldn't influence mpeg4 movies.

Hope it helps you
Best regards

Thomas Hansen
 
Originally posted by Thomas1980
I use PowerDVD and Nimo codecpack 5 build 7. I also have Divx502 installed, but that shouldn't influence mpeg4 movies.
"mpeg 4" is a common name given to divx in general in addition to the official standard which isn't used as much as the divx knockoffs. I think when divx was invented, there was no "real" mpeg-4 yet so they used the name to make it sound more official.

I have found that Nimo's codecs interfere with each other. You may have a component of Nimo trying to play a file it isn't capable of playing. Try uninstalling Nimo.
 
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4) DivX ;-) 3.11a Alpha - ASF without the drawbacks

Origins: A guy who went by the handle "Gej" used a hex editor and some other tools to modify the binary dll file of Microsoft's MS-MPEG4v3 ASF codec so that it would work under AVIs, so that you could use it to encode high-res movies (since ASF was restricted to 352x288 resolution). He then released it onto the net. This became the original DivX which was updated until version 3.11alpha

Taken from some interesting reading at;
http://www.animemusicvideos.org/guides/avtech/video4_2.htm


Pauly Man,
You might try using G-Spot to identify the Video and Audio Codecs. See if it gives you the same thing (AAc). It’s a very handy utility to have, in case you don’t know about it. It is free and available here;
http://www.softnews.ro/public/cat/11/2/7/11-2-7-12.shtml

I had a similar problem to yours (no audio), but what was missing was the ac3 filter, not AAc. After using GSpot to identify the problem I was able to hunt down what I needed off the web.

-Good Luck

PS
Just like Russ was saying about the Nimo codecs interfering, I have found conflicting codec troubles too. For that reason I never use any more codecs than those actually needed, and I avoid those packs containing gadzooks of codecs all bundled up in one package.
GSpot is a great tool for keeping the number of codecs to a minimum.

One example, the DivX5.05 Codec (which I’ve been playing with recently) will write itself over the place of the 5.02 codec, and then fail to work with one of my programs. If I uninstall either one then reboot and perform the install I won’t get this problem.

Maybe you can get lucky with AAC utilizing a google search;
http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=AAc+codec
 
Last edited by a moderator:
Originally posted by BoulderHead
Just like Russ was saying about the Nimo codecs interfering, I have found conflicting codec troubles too. For that reason I never use any more codecs than those actually needed, and I avoid those packs containing gadzooks of codecs all bundled up in one package.
GSpot is a great tool for keeping the number of codecs to a minimum.
What would be nice is if MS built into Media Player an easy way to manually select the codec you want to use.
 
  • #10
I've downloaded QuickTime 6.3 and it can play .mp4 no problem by the looks of it. =]
 
  • #13
Can't remember if I told anyone. But GSpot couldn't identify the video, all it said was that it was a non-AVI format. Also Quicktime no longer allows me to play mp4 videos. SO I downloaded real one, (I hate it), but at least it allows you to download an mp4 specific codec and use it easily.
 
  • #14
Gspot only works with an .avi extention (as I too realized recently), and those little jaspers are .mp4. Quicktime couldn't play them, claiming they were not valid MPEG-4 files, and that they either contained no 'moov' atom, or the file has been corrupted.
 
  • #15
Saint said:
what is MP4?
I know MP3.
are they the same?[?]

hay I've got a problem with my mp4 were the screen jus goes blue whenever the mp4 is on i was wondering if anyone knows how to fix it?
 
  • #16
hay I've got a problem with my mp4 were the screen jus goes blue whenever the mp4 is on i was wondering if anyone knows how to fix it?
 
  • #17
Hi guys I had some problem with my player as well but recently I found a great tech support site that have a huge knowledge base of http://www.fixya.com" products. They also have live chat support and guaranteed solution. I am sure you will find some answers there.

Good luck

Lee
 
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  • #18
hey there,
i have a problem i have this movie.mp4 but i can't seem to burn it i have DivX codec 6.5.0 but it doesn't help me if there is someone who can help me convert this .mp4 to a Avi please help me...

thank you
 

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