如何允许人们上传视频，然后其他人可以观看这些视频，而他们却无法下载？
我想允许用户上传视频，然后让其他用户在完成允许他们这样做的任务后查看。
编辑：该网站的目的是视频教程。如果该人能够通过第一个视频的测试，那么他们可以观看该系列中的第二个视频。基本上限制了他们能够观看的视频。我真正不想要的是直接下载。
I'd like to allow users to upload videos and then have other users view when they have done task that allows them to.
EDIT: The purpose of the site is video tutorials. If the person is able to pass the test for the first video then they can watch the second video in the series. Basically limiting what videos they are able to watch. What I really don't want is direct download.
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简短的回答是你不能。如果他们可以观看视频，他们就会下载它。即使您使用 Flash 查看器，他们仍然会下载它。
Netflix 和其他公司通过在只有他们的 (silverlight) 播放器才能解锁的流媒体电影中添加 DRM 来解决此限制。你可以使用各种技巧，但 firebug 和 chrome 开发工具将让我轻松击败你可能拥有的任何技巧。
以 flickr 用来让您右键单击保存其网站上的图像的 spaceball.gif 为例。您所要做的就是弹出开发工具，然后从那里保存图像。
The short answer is you can't. If they can watch the video, they are downloading it. Even if you use a flash viewer, they are still downloading it.
Netflix and others get around this limitation by putting DRM in their streamed movies that only their (silverlight) players can unlock. You can do all kinds of tricks, but firebug and chrome dev tools will allow me to easily defeat any tricks you might have.
Take for instance the spaceball.gif that flickr uses to keep you for right-click saving an image from their site. All you have to do is pop open the dev tools, and save the image from there.
不可能。你可以打赌 YouTube 会这么做，但他们只是成功地让它变得不方便。
Not possible. You can bet YouTube would do this, but they merely succeeded making it inconvenient.