I don't know about the stills from videos but I do know Pixsy is not much use with LinkedIn takedowns.  I had an image on sale in Alamy used in several places on LinkedIn and this was picked up by Pixsy which was very useful.  However, a Pixsy case requires confirmation from the agency that no licence has been sold and that you remove the image from sale which may be too much of a sacrifice just for a LinkedIn use. 

I took it up with Alamy who said they were unable to act with social media sites (no explanation why) but they were helpful in getting payment from a large media group who had also used the image.  I completed the LinkedIn copyright violation form myself and promptly received a reply saying they would deal with it under their publishing rules.  Nothing happened and the images are still used in LinkedIn.

Key to success: steal from people.

Key to success: steal from people.

67 Golden Rules to be successful in life and business? I find unethical people are best at selling this kind of BS, but worse is that others believe them. Like people who write books on microstock photography as well as put on workshops, promising success. As long as you pay them.

But golden rules, stealing photos for their program and success. That's perfect for true believers who are suckers for these pitches.