As a SEO Hero, it's important to create new, unique videos to put on your website, YouTube and Vimeo to help boost SEO.
I've heard great things about Wondershare Filmora. It's super easy to use, low on system resources and produces beautiful videos with hollywood-style transitions, titles, etc. With lifetime updates for just $59.99, it really can't be beat! (I purchased mine with a $10 off coupon so only $49.99) filmora.wondershare.com/video-editor/
These are some great sources of free video and stock photos that you can use on your websites. The downside of "free" is that there is strong chance these images are used often by a lot of websites, but they are a good alternative to paid stock if you have no budget. A lot of these have video stock footage, too, which are great to use as website backgrounds to add movement. shotzr.com (Phone App only - hyper-local free photos) pexels.com Videvo (video and audio, too!) Coverr