Well just to pour some information, you can’t use others video in your own product if you dont have permission to use it. Using it without their consent or without them knowing will lead to lawsuits and more. If you really want to use the video of others you need to approach and contact them to get permission and put credits to them so that they will be more happy for you to use it.
Maryann Farrugia CEO, Offshore Business Processing
https://www.youtube.com/channel/UCn2IzUy8h90gE4OMHiBy2Rg
