I am not asking how to save or download the videos from youtube or facebook. All, I need to know is why aren't they cached in browser or system memories. Even if the default size for browser use is set to 10 GB, the videos are never saved.
Is it something to do with the browsers ? Do they don't allow caching or Is it the website offering the content.
One way or the other, there should be reason and what could that be. If browser don't allow, then why ? And if websites don't offer this, then why ?