Does anyone know of any good, reasonably fast software to scan through a load of video files. Hours/weeks of footage to sift out any motion detected reasonably quickly. Preferably with a GUI.

I have tried a few, and DVR-SCAN seems to do a decent job, but it's very slow, and without the GUI, I need to manually open every video file that it has saved (taking up a ton of space) to see if they have what i am looking for.

Ideally free software, as I am broke. But if there are good recommended paid options I will happily consider them, My head is close to exploding digging through these. I am using Linux Mint, but will happily use any distro that may help me better. Hopefully this post it allowed here, if not could someone please point me in the right direction. Thanks.