Adding Codecs

I have several large files (2GB) that are in the .avi format. They apparently were encoded using "DVI ADPCM"----is there anyway I can use Quicktime or Quicktime Pro to open them? Also, I tried opening with Windows Media Player but they wouldn't open with it either.

iMac Dual Intel Core, Mac OS X (10.4.7)

Posted on Mar 16, 2007 11:04 AM

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25 replies

Mar 16, 2007 5:52 PM in response to Alexclt

I'm having the same problem... sortof. My video plays great, but my sound is DVI ADPCM, and in Quicktime it stutters very badly. VLC "plays" them decently, and the audio is okay, but the video is not nearly as good as QT. I have almost every component and just added the suggested perian component... but that didn't work either. Hmmmm..

It seems like a lot of camcorders and digicams are using this compression...

Apple? Hello?

Mar 21, 2007 3:32 AM in response to Ed State

Well, I guess mine's not "technically" a proper
camcorder... it's an Archos 404. Primarily a portable
video player, but it has a camcorder as well. And the
movies are better than most digital camera's
"movies"...


I too use an archos but the earlier 420. It records in:

DivX 6.0, 512 x 384, Millions
DVI ADPCM, Stereo, 48.000 kHz

I had a sound stuttering problem in files that previously played OK. I fixed it by binning the Perian component from Macintosh HD>Library>Quicktime.

I already had DivX installed, so I assume that there was some sort of conflict. I haven't really investigated further.

Mar 25, 2007 8:15 AM in response to Ed State

I'm a bit confused... what did you do to the Perian
componenet? Binning?


I just moved it from Macintosh Hard Drive>Library>Quicktime....where the componets live....to the Trash and emptied the Trash. I probably restarted the computer or quit and restarted Quicktime as well.

This is not a reflection on Perian, which has had good reviews. I'm just relating what worked for me at the time. Usually, I would investigate more such as reinstalling Perian to see if I could recreate the problem. No time.

Mar 27, 2007 9:08 AM in response to Alexclt

I'm still trying to open the 2 GB files. I managed to get one open but when I transferred it to Final Cut and placed it in the time line, it wouldn't open---although the logo still indicated it was a Quicktime file. What would be the best program to use that would not only allow me to open these files, but to basically convert them so they can be opened and edited in FCE v3.5?

Mar 27, 2007 9:49 AM in response to Alexclt

The 2gb files I have were recordings of video only
although audio tracks may show up with nothing on
them. I believe they may have been recorded on an
Archos. How can I convert them into something that
will be accepted for editing by Final Cut Express
v3.5?


Do you have DivX installed? If not try it

We use archos created AVI files that use the DivX codec. I simply drag and drop files into the clips pane of imovie.

If the files won't open or play in Quicktime then they are unlikely to be suitable for FCE or imovie.

Mar 27, 2007 3:13 PM in response to Ken Twydell

I have installed DivX, but when I attempt to convert the .avi 2gb files the conversion freezes at approximately 50%...it's done this twice. A lot of people have praised ffmpegx so I downloaded it. I could have done something wrong during the download (since there are so many steps to it I thought I was back in a Windows download for a minute) but when I dragged one of my .avi files into the right box, all I got was "Unrecognized" I've spent most of the day on this project and so far I'm no better off than when I started this morning...any more suggestions will be greatly appreciated.

Mar 28, 2007 5:11 AM in response to Alexclt

So far I'm no better off than
when I started this morning...any more suggestions
will be greatly appreciated.


Do the original files play in Quicktime or DivX player?

Do you have 3ivX installed? If so try removing it as I have heard that it can sometimes conflict with DivX

As another poster suggested, VisualHub may be of use. There was a bug in VisualHub where converted DV diles were speeded up. This may have been corrected on recent versions. If not the workaround was to force Quicktime decoding in the advanced controls. Mind you, this rather negates the point of using VisualHub in this instance.

Do you have any files from the same source that are smaller? If so can you play and/or convert them on your Mac.

Do these large files still play on the original or any Archos? If so you could use the editing capabilities of the Archos to split them into more manageable lumps.

I am assuming that your computer is healthy, up to date and with plenty of spare hard drive space.

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Adding Codecs

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