Good afternoon, I wanted to report that every time I export a file with the metadata downloaded, the first file is saved perfectly and the metadata is seen as a thumbnail in the Finder, but the next file no longer shows the mini-auture and also messes up something in the system so the thumbnails of every new file are no longer seen. To fix this, macOS Monterey needs to be restarted. It only happens when using Subler, because it doesn't happen with other programs like iSubtitle, HandBrake. (But I love Subler for its simplicity!)
Captura_de_Pantalla_2022-02-22_a_las_13.44.29.png
Captura_de_Pantalla_2022-02-22_a_las_13.44.13.png
Captura_de_Pantalla_2022-02-22_a_las_13.41.56.png
Captura_de_Pantalla_2022-02-22_a_las_13.41.06.png
Captura_de_Pantalla_2022-02-22_a_las_13.41.39.png
Captura_de_Pantalla_2022-02-22_a_las_13.40.27.png
Captura_de_Pantalla_2022-02-22_a_las_13.40.11.png
Seems like a macOS bug. Subler doesn’t do anything weird, it just writes the mp4 file.
Yes, I thought the same thing until I tested with other programs similar to Subler and the problem does not occur. It only happens when using Subler. That's the strange thing.
Good morning, Damiano! I upload a new screen, where you can see that the window you use (the api you use from Finder) is not the correct one, because it does not "inherit" the attributes that the window has.
It’s just a standard NSOpenPanel. There is nothing I can do.
If macOS stops creating thumbnails it’s a macOS problem, Subler might do something to trigger the issue, but it’s not up to me to fix macOS bugs.
+1. Subler save process somehow makes the whole Thumbnail agent to stop working. It started in Monterrey and I isolated it’s caused only by Subler on my computer (not with any other media players or editors). Especially if it’s saving multiple files simultaneously. You have to kill the quicklook.ThumbnailAgent and relaunch finder to get it working again. Subler for sure is tapping into the QuickLookUIService. I do see it as a separate process in activity window
”QuickLookUIService (com.apple.appkit.xpc.openAndSavePAnelService (Subler))”. Maybe related to the API mentioned before (outdated or changed somehow in Monterrey ) I wonder if that’s causing it somehow.
That is exactly what I wanted to explain here. I repeat, it only happens when saving a file with Subler. It does not happen with any other video editor.
It happens with "QuickLookUIService"(com.apple.appkit.xpc.openAndSavePAnelService (Subler))
You have to terminate all processes and restart the Finder to get it working again. This is a software failure and not a system failure, otherwise it would happen with all software similar to Subler.
This issue is not meant to cause a problem, but to help. Thanks Damiano.
some more investigation.. it’s not the save, it’s save as which utilizes the finder window to show where to save. If you open a m4v edit etc and save it as is, no issues. If you create a brand new file from an mkv etc add the tracks and save it as m4v container it breaks the thumbnail generator. Interestingly the thumbnail process itself does not become unstable or hangs etc. It still looks like working in activity monitor but It simply stops generating thumbnails from then onwards. So anything created before shows thumbnails but everything new or modified starts showing generic thumbnail icons. Hope it helps. Workaround I found is to use the queue so I don’t trigger the save as interface. Thanks!
