Well, a better idea is to use https://pypi.org/project/opencv-python/and create videos with https://pypi.org/project/pillow/doing creative stuff with images, moving them around the screen, adding some nice sounds and then connecting it with stock footage, then also other videos you can find on the internet.
If you connect two of those libraries, you can create infinite content using nothing but creativity. Just saying that video uniquezing is a primitive method and it's best to ditch it as it's nothing more than people trying to sell you canned air. One dude selling that type of fairytale told me his software is worth like $5000. Meanwhile you can create such software for less than $300 if you know what tools to use (this is the biggest cost - research). Don't let some hustlers bank on your naiveness.
I recommend to create manual selection of footage. I think a library of 5000 videos should do to create a decent randomness.
So I got infinite intro, infinite outro, limitless backgrounds and unlimited video footage as the internet is spammed populated everyday with something new. Now add voiceover or subtitles + music that is coherent and concise on top of that.