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  1. #1
    I need a Photos expert, please
    MacInWin's Avatar
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    I need a Photos expert, please
    Photos has gotten into some sort of hangup for me. The thread is here: https://www.mac-forums.com/images-gr...an-people.html

    But what I am thinking of doing is to export everything from the Photos library on my Mac in the original format to an external drive, then open a new database by holding Option as I start Photos and importing all those original images into that new database to see if that fixes the hangup.

    But, and this is the critical question area, I sync through iCloud to keep my iPhone and iPad updated. What happens if I change the database this way and import all those images? Will they all have to go up to iCloud again? Will iCloud create a new database and keep the old one? Will they duplicate or replace what's on my iPhone and iPad? I know that only the System Photo Library is synced with iCloud, but I'm not creating a file with a different name, and this new database would BE the System Library, so it would sync to iCloud. But can anyone verify that?

    Similarly, there is a "Repair library" process described in the Help menu. If I use that, what happens in iCloud, iPad, iPhone? Does the repaired library replace the System Library and get synced?
    Jake

  2. #2
    I need a Photos expert, please
    badshoehabit's Avatar
    Member Since
    Aug 02, 2011
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    I've answered on the other thread...

    What about replacing the library from an earlier back up? That should get rid of all recent instructions and I can't see it affecting much synchronisation.
    Sue

    If the shoe fits, buy it in every colour.

  3. #3
    I need a Photos expert, please
    IWT's Avatar
    Member Since
    Jan 23, 2009
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    Quote Originally Posted by badshoehabit View Post
    I've answered on the other thread...

    What about replacing the library from an earlier back up? That should get rid of all recent instructions and I can't see it affecting much synchronisation.
    I also replied on the other thread. The question is whether to Restore the Photos app wherein, I presume, the instructions lie, or the Library itself - or even both?

    Anyhow, as I said on the other thread, it's a much better idea than any of mine.

    Ian
    Ian

  4. #4
    I need a Photos expert, please
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
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    It gets curiouser and curiouser. Last night after 30 hours of zero progress, I decided to do a "repair" on the Photos database. There is a procedure for that in the Photos help, so I followed the steps and it went through a series of rebuilding and fixing steps, with the "complete" bar slowly progressing until it was 100% done and the bar was replaced by "start using Photos."

    Great! I clicked on the start using button and sure enough, up came Photos with all my pictures intact. I went to the People pay and got a message saying it was scanning and would display once done. Fair enough, I left it alone. I noted that there was a process named VTDecoderXPCService, that was pounding away at something, taking up between 230 and 280% of the CPU (yes, that's possible, that just means that it was using between two and three of the cores exclusively). It ran that way for several hours. At bedtime I opened Photos again and went to the People page and it reported that it had scanned 3,141 with 5,364 to go. VTDecoderXPCServer had taken 3 hours, 57 minutes 18.47 seconds of CPU to get to that point.

    So, this morning I fully expected to see some real progress.

    Nope, it's at 3,141/5,364, VTDecoderXPCService is now taking 0% of the CPU. Basically I've taken a step backwards. I have fewer images scanned, still cannot use my People page as advertised, Apple is stumped, and I'm out of ideas.

    So, I'm now considering just whacking the entire database (Move it out from where it is) and restarting Photos, That should then recreate the database and then I can add back the pictures from where I exported them a couple of days ago.

    What I need is the answer to the question of what then would happen to iCloud and my iPhone and iPad? Will the new database sync and overwrite what is on them or will it add duplicates to them or will the move the basically transparent as long as the filenames remain the same?

    Also, can anybody tell me if the fact that some of the photos are jpg and some are heic format would make a difference? It shouldn't, as that's how Apple set it up, but at this point I'm clutching at straws.
    Jake

  5. #5
    I need a Photos expert, please
    ferrarr's Avatar
    Member Since
    May 21, 2012
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    Do you know if you imported video files into your Photos library, and how it would scan them IF you did have video files in there? Maybe that is affecting the scan?

    Found this, https://discussions.apple.com/thread/7791760
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  6. #6
    I need a Photos expert, please
    IWT's Avatar
    Member Since
    Jan 23, 2009
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    Born in Scotland, Worked in Scotland then England, Now live in Wales
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    Late 2015 5K 27-inch Retina iMac, 4GHz i7, 32GB RAM, 1TB Flash Drive, macOS High Sierra 10.13.6
    Brilliant find, Rob! That does seem to make sense. It would be so much more useful if one could exclude videos from the process.

    Ian
    Ian

  7. #7
    I need a Photos expert, please
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
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    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    Thanks, Bob, it's nice to know I'm not the only one with this problem. The post in that thread that really got me chuckling was the Apple fanboy who claimed that having to wait 6 months for the scan was not a bug because the person who complained had a "dream" about how it should work. Frankly, other products can scan faces much faster, so it must be something in the way Apple implemented it. Reminds me of a story from a couple of decades ago. We started a process to add some names into a database and after running 24 hours it had processed 10 names out of the 100,000 needing to be added to the 800,000 already in the database. We contacted the developers and asked if they had tested the routine with a live load. Yes, they said, they had tested by entering 3 names into a database with 10 names and it completed in 7 minutes. Not a very realistic test. My programmer spent a weekend and rewrote the routine himself to complete the job in 3 minutes. Strangely, the company was not interested in the "fix" as they insisted there was no "bug" to be fixed!

    I do have video files, not many, but some, and the "live" photos all create a video file for the few seconds they run. That may be contributing to the creakiness, but the bottom line is that Photos has simply stopped processing files, at least according to Activity Monitor. There is slow and then there is stopped. Right now, it's stopped.
    Jake

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