& header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
& header('Cache-Control: no-store, no-cache, must-revalidate');
& header('Cache-Control: post-check=0, pre-check=0', FALSE);
& header('Pragma: no-cache');
This command sets flush the page cache immediately after using it. But it will not stop more experienced users, if the <embed> tag has an attribute the precise source of a video. To resolve this issue, scripts must set as source the dynamically changing address to the video, what must depend on the session in the browser.
This is best done using mod_rewrite - module for the Web server Apache, which allows you to modify the query address dynamically when it is loading. For more information, see the documentation. In my personal opinion, for maximum protection you also should use low quality or with a specific marketing content (such as the link to the
site) videos for viewing online with possible load of originals by certain rules.
For that you should, using php and ffmpeg, convert your video to less quality to be used for viewing. Moreover, these format videos will be better understood by mobile phones.
In conclusion, the use of most flash players does not protect your video from loading, but only gives the player a better view.
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