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Please help me understand which meta-data Match considers "master"

236 Views 3 Replies Latest reply: Feb 14, 2013 10:44 AM by BJ4Rock RSS
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Feb 10, 2013 12:43 AM

Hi, after having spent hours adding composers to tracks (not realizing doing so while iTM was syncing was a bad idea) and seeing them vanish later, I truly want to understand how Match views meta-data (so I can possibly restore the hours' worth of work from Time Machine).

 

Here's what I do understand:

 

  • When I make changes to meta-data on the "master computer" (the one where the library resides), iTM will sync those changes to iCloud and propagate the changes to other computers and devices (although sometimes this seems to take quite some time)
  • I've also confirmed that I can use any other computer linked to my Apple ID and with iTM turned on to edit meta-data, even without having downloaded the track to these computers, and they will still be synced to the cloud copies and flushed through to other computers and devices, even the "master computer"

 

However, what I don't understand is which criteria iTM applies to determine which is the "master" meta-data to keep and which to overwrite. Some examples of cases:

 

  • For the same track, I edit the meta-data on the master computer and my wife edits the same data from her computer, creating conflicts within the the track information. Which of the edits will iTM keep and why?
  • I edit a track while the iTM update is in progress (which is the troublesome situation many have seen), meaning the meta-data on my master computer is newer than those in the cloud. Still, iTM considers the cloud data to take presedence and syncs these back to the computer.

 

Some criteria I could imagine are used:

 

  • The newest of conflicting data would be kept
  • The "master computer" would rule the others
  • Cloud data would be considered master

 

But it seems none of these consistently apply, and that's what's so frustrating...

  • Michael Allbritton Level 6 Level 6 (16,190 points)

    In general, iTunes Match considers "the cloud" to contain the "master" data.

     

    BJ4Rock wrote:

     

    However, what I don't understand is which criteria iTM applies to determine which is the "master" meta-data to keep and which to overwrite. Some examples of cases:

     

    • For the same track, I edit the meta-data on the master computer and my wife edits the same data from her computer, creating conflicts within the the track information. Which of the edits will iTM keep and why?

    iTM will keep the most recent change in the cloud and push it out to all the devices. So whichever of you finishes last "wins."

     

    BJ4Rock wrote:

     

    • I edit a track while the iTM update is in progress (which is the troublesome situation many have seen), meaning the meta-data on my master computer is newer than those in the cloud. Still, iTM considers the cloud data to take presedence and syncs these back to the computer.

    Yes, this is correct, unfortunately. Any changes to ID3 tags made while the service is actively scanning your library, or if there is an interuption in the connection between iTunes and the cloud servers will be ignored the next time the connection is re-established and the data from the cloud will be pushed to your computer.

     

    What you and I might consider the "master" library (ie: our iTunes library on our computer) is not in the case of iTunes Match. It is only a "client."

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