- If you don't want to use the default image viewer for Windows or Mac, right click the image file and select Open with. Choose one of the alternate programs listed, or select Choose another app. When you choose a different program to open the image, select the box beside Always use this app to open files of the same type with the chosen program.
- Mac Photo Album Software. Photos intelligently declutters and curates your photos and videos — so you can easily see your best memories. Focus on your best shots. Photos emphasizes the best shots in your library, hiding duplicates, receipts, and screenshots. Days, Months, and Years views organize your photos by when they were taken.
To view the location of your Photos library in the Finder, click Show in Finder. To use the currently open library as your System Photo Library (which allows you to use it with iCloud Photos), click Use as System Photo Library. For information about how to switch libraries, see System Photo Library overview and Create additional photo libraries.
Hello man_kaylah,Thanks for that info and choosing the Apple Support Communities. If I understand correctly, you are not able to watch videos and some pictures have 'exclamation marks' in the Photos app on your Mac. To help resolve this issue, please follow these steps:
Back up your library
Before following any of these steps, it's a good idea to create a backup of your photo library, even if you use iCloud Photo Library. You can use Time Machine, use a third-party backup solution, or copy the library to an external drive. By default, your photo library is stored in the Pictures folder within your home folder.
Make sure that your software is up to date
Photos is part of the Mac operating system (v10.10.3 and later). You can avoid or fix many issues by running the most up-to-date version of macOS. To check for updates, open the App Store, click Updates at the top of the window, and install any available macOS updates. Learn more about updating the software on your Mac.
If you use RAW images in Photos, make sure that you're running the latest Digital RAW Camera Compatibility update. Check for updates in the App Store, and install any available Digital Camera RAW Compatibility update. You can learn more about the digital camera RAW formats supported by iOS 10 and macOS Sierra.
If you're experiencing other issues—like missing or blank photo thumbnails, unexpected behavior, or if Photos won’t open—you can repair your library using the steps below.
The Photos repair tool analyzes the library's database and repairs any inconsistencies it detects. Depending on the size of your library, this might take some time. When the process is complete, Photos opens your library.
Follow these steps to use the Photos repair tool:
- Make sure that you've backed up your main Photos library.
- Quit Photos if it's open.
- Press and hold the Option and Command keys as you open Photos again.
- The Repair Library dialog appears. Click Repair, and then enter an administrator password to begin running the Photos repair tool.
If you're using iCloud Photo Library, running the Photos repair tool will cause your library to re-update with iCloud.
Get help with the Photos app on your Mac
Mac Photo Library Management
Cheers!Mac Photo Library Files
Dec 12, 2017 3:40 PM