How to protect against copying by direct link?

Question

PHP

Good day.
There is a player that uses the m3u8 playlist, you need to protect the playlist from downloading via a direct link, so that when a person goes to https://site.ru/playlist.m3u8 , he gets an access error.
How to implement it?
Thanks

Answer 1

There was once a service that played music in some of the shaggy formats (it was a long time ago, in the late 90s) without saving to disk. So what? That's right, they wrote a client that simulated playback, but actually saved it to disk :)
What am I talking about? The fact that as soon as the service begins to be of at least some interest, they will write you any imitation that will pretend to be a player, and do what the author wishes.

Answer 2

There is no point in the referrer: whoever needs it will download it.

you need to protect the playlist from downloading via a direct link

You can give an encrypted link in this playlist, and on the front AND back - decrypt it before giving the file to the player.
It will be much better: after viewing a chaotic set of characters through a direct playlist link, few people want to understand the js code .
Completely - you can’t ban it at all, so the approach is this: reduce the desire to download through a simple increase in complexity.

Answer 3

$_SERVER['HTTP_REFERER'] to put it simply...

Answer 4

No way.