Cannot openPreview for a video that is not a preview

What does this mean? I get this error often

2024-01-17 06-47-22.353 Thread: 9224 Critical Cannot openPreview for a video that is not a preview!
2024-01-17 06-47-22.353 Th
2024-01-17-06-05-33-Main.tzlog (1.8 MB)
read: 9224 Info OUT: 2 frame= 78897 fps= 32.6028

I’d recommend trying the same clip again after changing the “Max Memory Usage” setting to 50% or even 20% to see if there’s an improvement in stability.

File → Preferences → Processing

1 Like

I am having the same “Cannot openPreview for a video that is not a preview!” error. I’ve tried to lower the max memory usage setting. I’ve downloaded and installed the latest GPU drivers. never been able to process a file. I can only preview 5 to 15 second clips and 9 out of 10 times it gives an error before completion. Any advise would be greatly appreciated.
logsForSupport.zip (14.3 KB)

What I did was download an app called, “process lasso”, Then, in the app on FFMPEG.EXE, set the CPU affinity to :disable hyper-threading. I haven’t had any problems since

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