Read-only video (No way to download, only playable)
I'm creating PHP based web project in which students can login and watch tutorials. The service is paid, so I want to prevent downloading video files from website (and sharing for free). 

In other words, every user can only watch videos on website, no way to download. 

For this purpose, I was searching for secure HTML5 or Flash based web video player that doesn't cache video or deletes all temp video files after playing it.

What I want to get is, something like youtube does: deletes temp files after watching video.

Is there any way to do it? Any suggestions?

What about embeding video from youtube and making it "read-only" (no way to download)?! Is that possible?


#OR

can this piece of code help me to not to cache video?

    <!-- no cache headers -->
    <meta http-equiv="Pragma" content="no-cache">
    <meta http-equiv="no-cache">
    <meta http-equiv="Expires" content="-1">
    <meta http-equiv="Cache-Control" content="no-cache">
    <!-- end no cache headers -->

Thx in advance.
Read-only video (No way to download, only playable)
===

I'm creating PHP based web project in which students can login and watch tutorials. The service is paid, so I want to prevent downloading video files from website (and sharing for free). 

In other words, every user can only watch videos on website, no way to download. 

For this purpose, I was searching for secure HTML5 or Flash based web video player that doesn't cache video or deletes all temp video files after playing it.

What I want to get is, something like youtube does: deletes temp files after watching video.

Is there any way to do it? Any suggestions?

What about embeding video from youtube and making it "read-only" (no way to download)?! Is that possible?


#OR

can this piece of code help me to not to cache video?

    <!-- no cache headers -->
    <meta http-equiv="Pragma" content="no-cache">
    <meta http-equiv="no-cache">
    <meta http-equiv="Expires" content="-1">
    <meta http-equiv="Cache-Control" content="no-cache">
    <!-- end no cache headers -->

Thx in advance.