I have found the following solution for myself. The PowerShell script below uses ffmpeg, can handle 180° or 360°, left-right or top-bottom VR videos and creates a flattened 640x480 thumbnail image from the middle of the video in less than a second. Perhaps this would be an approach for implementatio...

I suggest the following solution: Get a database editor that supports SQL Lite. I'm using the "SQLite Manager" add-on for Firefox, but there are other applications like SQLiteSpy. Load your Videonizer database and execute the following SQL statements: UPDATE item SET path = REPLACE(path, '...