Video Freezing During Exported Photos Slideshow OSX 14.3.1

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Video Freezing During Exported Photos Slideshow OSX 14.3.1

I exported a Photos slideshow (classic theme, no music) with 180 jpeg images and a few iPhone videos to my hard drive, creating a 2.3GB m4v file, length = 40 min. During the last quarter of the movie, video clips freeze the picture but the audio plays. Is there a cause other than a possible glitch during export? (I have noticed that the export progress bar reaches the end of its limit before the process is complete, but this does not seem to stop the exporting.)

Thanks for any suggestions.

MacBook Pro 14″, macOS 14.3

Posted on Dec 16, 2024 2:11 PM

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Answer 1

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randyc Author

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Dec 17, 2024 11:27 PM in response to Richard.Taylor

Thanks for your quick response, Richard. I failed to mention that my Photos library lives on an external drive. I followed your first suggestion and created a new library on the iMac for the export, suspecting that the external ssd was not handling the read/write tasks effectively. That solved the problem. Cheers - all is well!

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Answer 2

Dec 17, 2024 8:33 AM in response to randyc

I'm not sure why this is happening. Have you tried a second export to see if it's the same? If it still happens, then to narrow things down, try these steps:

Restart the computer (of course)
Re-start in Safe Mode. This bypasses certain potentially disruptive processes, and it often helps. Safe Mode is different for different computers, so see this:

Start up your Mac in safe mode - Apple Support

Those are the easiest things to try first. Then try these:

Use another library if you have one, or make a small test Library with a few pictures in it and see if the same thing happens. You can create a new Library by closing Photos and then option-clicking on the Photos icon.
Make a new user and see if the same problem recurs with it
Rebuild your Photos Library--close Photos and re-launch by option-command-clicking the app icon.

The idea is to find out if the problem is with the Library, with your account, or with caches and login items, and stuff like that. One of these steps may fix the problem, but their failure to work also helps figure out what's happening.

Let us know what happens…

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Answer 3

randyc Author

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Dec 22, 2024 10:17 PM in response to Richard.Taylor

Thanks, Richard. The external drives are APFS formatted, and so the library works fine. Since the export to m4v worked perfectly when I didn't use the external drives, I have to conclude that there was a read/write problem with the RAID. It consists of two Samsung SSD's in a Thunderbolt enclosure, so speed is not the issue. Strange, but I don't perform that task often enough to worry about it.

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Answer 4

Dec 18, 2024 7:00 AM in response to randyc

How is your SSD drive formatted? To avoid damaging the Photos Library an external drive must be formatted in either APFS format or Mac OS Extended (Journaled) format. Additionally, the drive can not have had Time Machine on it since it was formatted. There have been so many problems with using incompatible drives that the newest macOSs won't even allow a Library on a non-Mac formatted drive to open, since there is a chance of damaging the Photos database. See this:

Move your Photos library to save space on your Mac - Apple Support

If the drive is not properly formatted, then running a Photos Library on it could damage the Library, itself!

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Video Freezing During Exported Photos Slideshow OSX 14.3.1

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