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Stereo MP3 tracks load as mono
Posted: Mon Jan 07, 2008 10:40 am
by Father Brian
I have been ripping stereo LPs with Audacity using a USB turntable as input for about 6 months with excellent results. A track of an LP I did a few months ago needed redoing because of a groove jump. When I opened the file in Audacity, it showed as 1-channel mono, though the file information from Windows Explorer says it's 2-channel stereo. All the other tracks from the same session also opened in mono.
Last night I redid the first side of the LP, splitting the tracks, saving them and reopening them as 2-channel stereo. I thought this had solved the problem. This morning, those same tracks are opening as 1-channel mono. Audacity Preferences Audio I/O Recording Channels setting is 2 (Stereo). Can anyone help?
Re: Stereo MP3 tracks load as mono
Posted: Mon Jan 07, 2008 7:39 pm
by steve
Father Brian wrote:This morning, those same tracks are opening as 1-channel mono. Audacity Preferences Audio I/O Recording Channels setting is 2 (Stereo).
Well that's just blown out my first idea
Are you able to upload one of the offending tracks somewhere so we can see if it's anything to do with the file?
Re: Stereo MP3 tracks load as mono
Posted: Mon Jan 07, 2008 8:40 pm
by Father Brian
Re: Stereo MP3 tracks load as mono
Posted: Mon Jan 07, 2008 9:01 pm
by alatham
That file opens as a stereo track here:
- aud track.JPG (139.54 KiB) Viewed 1098 times
Re: Stereo MP3 tracks load as mono
Posted: Mon Jan 07, 2008 10:35 pm
by Father Brian
Thanks for that, alatham, this is what I see:
I also see a mono track when I open with Audacity v1.3.4. It seems that everything in that folder opens as mono, even though the file Properties say 2-track stereo. As a control, I can open tracks from other folders as stereo.
They were originally ripped with v1.2.4 and I updated to v1.2.6, hoping that might have solved it. Oh well...
Re: Stereo MP3 tracks load as mono
Posted: Mon Jan 07, 2008 10:38 pm
by Father Brian
I'm signing off for the night so I'll respond to any posts tomorrow, thanks to all.
Re: Stereo MP3 tracks load as mono
Posted: Tue Jan 08, 2008 12:49 pm
by Father Brian
Because others can open my file as stereo (and when all else fails), I uninstalled and reinstalled v1.2.6. I reprocessed the raw recording and split it into tracks. What did I get? Stereo!!!
Many thanks to those who responded or considered the issue, which should be considered closed.
Re: Stereo MP3 tracks load as mono
Posted: Tue Jan 08, 2008 5:27 pm
by Father Brian
Grovelling apology time. I traced the problem to a corrupt artwork image attached to the files. I detached the image and Audacity (both versions) opens the files as stereo, reattached it and they're back to mono.
