视频文件的复制保护 [英] Copy Protection of video file

问题描述

我想构建一个播放Flash视频文件的项目，但是用户不应复制视频文件，并且文件的格式必须使任何人都不能复制，删除或查看.

任何人都可以帮助我共享源代码.

解决方案

Flash不支持FLV文件的加密.将文件提供给远程客户端后，他就可以使用它进行任何操作. .如果这是媒体流，则本地计算机上没有文件形式的媒体副本.对于大多数用户而言，保存文件将非常困难.但是，对于专家而言，无论您如何保护"它都不会是一个大问题.如果媒体播放器可以播放它，则意味着其他播放器可以播放并保存它.因此，即使对于能够进行Web搜索和阅读文档以获取副本的非专家人员，也是有可能的.例如，VLC会做到这一点，就是能够读取其帮助并编写相当复杂的命令行.

—SA

没有办法.为了播放文件，用户必须可读它.为了复制文件，用户必须可读它.由于代码以用户身份运行，因此它可以执行用户可以执行的任何操作.看看发生了什么事?

文件读取操作是文件读取操作.无法分辨这两个操作之间的区别，也无法分辨该文件的用途是什么.

您不能像这样复制保护文件.

i want to build a project that play flash video file but video file should not be copied by user and file must be such format that no one can neither copy nor delete and nor view.

anyone please help me to share source code.

解决方案

Flash doesn''t support encryption of FLV files. Once the file is served to the remote client, he can do anything he wants with it.

If the video has already been played on client computer, it means it has been "copied" already. If this is a media streaming, no copy of the media is available on the local computer in the form of a file. For majority of users it will be very difficult to save the file. However, for the expert it won''t be a big problem, no matter how hard you "protect" it. If the media player can play it, it means some other player can play and save it. So, even for a non-expert person who is able to do Web search and read documentation obtaining a copy would be possible. For example, VLC will do the trick is one is able to read its help and write a pretty complex command line.

—SA

There''s no way to do that. In order to play the file, it must be readable by the user. In order to copy the file, it must be readable by the user. Since code runs AS the user, it can do anything the user can do. See what''s happening?

A file read operation is a file read operation. There''s no way to tell the difference between the two operations, nor for what purpose the file being operation is being used for.

You cannot copy protect a file like that.

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