Ok, fair. I incorrectly assumed you meant resizing static images to create a lower resolution preview image.
replyVideo thumbnails are a different beast altogether. And you might want to double check your assumptions about security considerations. If any of your ffmpeg, opencv, pyscenedetect code is running on your server, it might well be exploitable.
It’s in-app on iOS.
replyIronically, already another user in this comment section was concerned about the security of my nonexistent backend.
But it’s good to know, I was not previously aware that video processing on the backend is a common source of vulnerabilities.