防止视频下载
我想知道我们如何防止其他人下载我网站中的视频.我的网站可以选择上传视频(flv 或 mp4 格式.管理员将上传)，用户支付一定金额后即可在线(使用 flowplayer)观看课程视频.
i want to know how can we prevent others to download the videos in my site. My site has the option of video uploading (in flv or mp4 format. Admin will upload them) and users can view the course videos online (using flowplayer) once they pay some amount.
但我观察到的是，用户可以使用 Freecorder 等工具下载这些视频.我不希望这种情况发生，因为视频的访问权限受到限制，并且只能在特定时间段内使用(直到用户的会员资格到期).
But what i observed is that the users can download those videos using tools like Freecorder. I dont want this to happen, because videos have restrictive access and only for a particular period of time (till the user's membership expires).
那么如何防止用户下载我网站中的视频?
So how can i prevent the user from being able to download the videos in my site ?
推荐答案
视频分发的基本规律与 软件许可的基本法.它是这样的:一旦您将视频放在不受您控制的屏幕上，您就无法再控制视频的分发.
The fundamental law of video distribution is very similar to the fundamental law of software licensing. It goes something like this: Once you put your video on a screen you don't control, you don't have control over distribution of your video any more.
即使您可以阻止他们下载文件，也无法阻止他们将 VCR 连接到视频卡并重新录制.即使您使用一些受保护的路径技术来阻止它，您也无法阻止他们将摄像机指向屏幕.
Even if you could stop them from downloading the file, you can't stop them from hooking a VCR to their video card and re-recording it. Even if you use some protected-path technology to stop that, you can't stop them from pointing a camcorder at the screen.
如果您想保密您的视频，您需要在您控制的影院中在您控制的屏幕上展示它们，并让有人观看观众以使用视频录制设备.除了对重新分配的非常轻微的减缓影响之外，没有其他任何事情会产生更大的影响.
If you want to keep your videos under wraps, you need to show them in a theater under your control on screens you control, and have someone watching the audience for video recording equipment. Nothing else is going to have more than a very slight slowing effect on re-distribution.
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