如何防止从我的网站下载视频专门在互联网上下载管理器？

Question

Problem:

I am developing a video tutorial site in php. I do not want to anybody to download this file using "IDM" or "right click and save option" .

What I tried

1:

  <?php
   $data = file_get_contents($first->video, FILE_BINARY);
   ?>                                                       
   <video  src="data:video/mp4;base64,<?=base64_encode($data)?>"    controls></video>

2: Disabled right click

Results: it worked for me but it load full video on page so very slow.

I need any alternative for this? Thanks

Answer 1

Short answer: You cannot.

Long(er) answer: It is not possible to prevent a user from downloading anything you want him/her to be able to view online, for the simple reason that the browser has to download it in order to display it.

You can make it more difficult to retain it on the computer. This is done by setting up a streaming server (like Youtube et al), and adding DRM to the video. However, this is only mildly annoying for anyone attempting to "download" your video, and is circumvented by approximately 10 minutes of searching the web.
Compared to the days, or possibly weeks, you'll spend setting up something like this properly.

What I do recommend is to simply add a watermark to the video, so that when someone copies the tutorial. It is at least obvious where it came from.
Then you can apply the proper defense against copyright infringement: The law.