Could it be a problem with my hardware/CPU? I have issues with this on another level, and it would give me more to argue when I am going to visit the Apple Store next week.
I doubt the Apple Store will provide much help for an old Microsoft format that MacOS doesn’t natively support, and requires a third party player for playback.
I was able to upscale a section of that file in TVAI on Win10.
Please make sure that the export path you are writing out to is readable and writable by Topaz Video AI and that the path exists.
Try adding Video AI to the list of apps with ‘Full Disk Access’ in the macOS System Settings and restarting the app after:
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If this does not work, please proceed to a clean install which should reset the app’s permissions.
If you have any custom presets saved, you will want to copy them over to a different folder (e.g. desktop) as they will get deleted when you uninstall.
Applications > Topaz Video AI > right click and Show package contents > Contents > Resources > Presets
Uninstall Topaz Video AI by dragging and dropping the app into the trash bin