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i got an avi container file and want to play with QT X. I installed Perian but sound does not work for a few files.
I used MediaInfo(http://mediainfo.sourceforge.net) to determine the used audio codec in this file. According to MediaInfo it's: 74.2 Kbps, 48.0 KHz, 2 channels MPEG Audio (MP3) (Version1)(Layer3)(Joint stereo / MS Stereo)

Other *.mp3 files work properly. Audio-Video-Setup was set to 41KHz and 48KHz... none works. In QT X -> Show Information i get this:

Generic MPEG-4, 640 x 272, Unknown MPEG Layer 3, Stereo, 48,000 kHz

Any idea? Thank you!

I don't want to use VLC Media Player and i don't want to convert the files.

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up vote 0 down vote accepted

Ok i got it. I deleted my messy folder (approx 170 files) and copied the folder (approx 20 files) from a clean SL installation + perian. Now it works =)

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What messy folder? –  Daniel Beck Sep 26 '10 at 21:06
    
My /Library/QuickTime –  manuel Sep 28 '10 at 10:33
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