如何解密由第三方软件加密的mp4视频文件？ [英] How do I decrypt an mp4 video file encrypted by 3rd party software?

问题描述

尝试打开一个MP4文件：

- 打包只能在本土应用程序中工作

- 问题是开发人员已经不在了，我需要编辑视频文件



尝试顶部打开视频文件时，我收到错误说明

- 不支持的格式

- 文件可能已损坏



视频在开发的自定义用户界面应用程序中正常播放。

看来有某些类型的块只能在自定义应用程序中播放。



无论如何要绕过它并在其他应用程序中玩？

Trying to open an MP4 File that:
- was packaged to only work in a home grown application
- problem is developer is no longer around, and i need to edit the video files

When trying top open the video file, I receive an error stating
- unsupported format
- file may be damaged

The video plays fine in the custom user interface application that was developed.
It appears there is some type of block for this to only play in the custom application.

Anyway to get around this and play in other applications?

推荐答案

取决于 - 你需要原始的源代码来告诉。最简单的方法是加密视频数据，以便只有特定的应用程序才能解密和查看它。如果是这样，那么您需要知道它是如何加密的，以及使用了什么加密密钥。没有来源，这几乎是不可能的。

Depends - you need the original source code to tell. The easiest way to do it is to encrypt the video data so that only the specific application can decrypt and view it. If so, then you need to know both how it was encrypted, and what encryption key was used. Without the source, that's pretty much impossible.

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