SDK 使用 FairPlay DRM 对媒体进行编码？
我的公司经营一个视频网站。目前，我们通过流媒体提供内容，并使用 WMRM DRM 下载到 Windows PC。我们希望为 Mac 提供可供下载的内容，但需要使用 FairPlay DRM 系统来保护它们。
这是我们可以做的事情，还是 FairPlay 是专有的并且只允许由 Apple 进行编码？是否有基于 Windows 的 SDK/工具包可让我们扩展编码器软件以创建 FairPlay 受保护的文件？我更喜欢 SDK，这样我们就可以开发进程内解决方案，而不必调用可执行文件。
（PS：我知道 DRM 并不流行，但这不是我们的决定，而是工作室的决定。所以我们可以选择要么提供 DRM 的下载，要么根本不提供下载。请不要回复答案例如“DRM 不好”或“DRM 不是答案”，因为这不是我的决定，甚至不是我公司的决定。）
My company runs a video website. We currently make our content available via streaming, and download to Windows PCs with WMRM DRM. We're looking to make content available to download for Macs but would need to protect them with the FairPlay DRM system.
Is this something that we can do, or is FairPlay proprietary and only permitted to be encoded by Apple? Is there a Windows-based SDK/toolkit available to enable us to expand our encoder software to be able to create FairPlay protected files? I'd prefer an SDK so we can develop an in-process solution rather than having to call an executable.
(PS: I know DRM is not popular, but it's not our call, it's the studios. So we have the choice of either making downloads available with DRM or not making downloads available at all. Please don't reply with answers like "DRM is bad" or "DRM is not the answer" because that's not my call, or even my company's call.)
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您可以使用此处的 FairPlay 流媒体 SDK：
https://developer.apple.com/streaming/fps/
它应该可以帮助您设置FairPlay 服务器环境。
You can use the FairPlay streaming SDK found here:
https://developer.apple.com/streaming/fps/
It should help you setup a FairPlay server environment.
Silverlight + PlayReady 是一个跨平台 DRM 解决方案。它允许您在 Windows 和 MacOS 上支持流媒体 + 下载的场景。
Silverlight + PlayReady is a cross-platform DRM solution. It allows for your scenario of supporting streaming + download on both Windows and MacOS.
不可以，除非通过 iTunes 分发您的内容，否则无法使用 FairPlay：
“苹果已经得出结论，”乔布斯说，“如果它将 FairPlay 授权给其他人，它就无法再保证保护其授权的音乐。”
曾经宣布的跨平台 DRM 是 RealNetworks Helix，它于 2007 年停止。尽管开源一些 Helix 技术，并且这些方面也有一些关于 DRM 的模糊声音，但我不认为这是一个可行的方案。产品曾经发布过。
在内容保护方面，WMDRM 或“基于 Flash 的内容”是唯一真正的选择，而在“下载到自己的”场景中，各大公司通常只接受前者。幸运的是，独立开发者通常根本不关心 DRM。
No, other than by distributing your content via iTunes, it is not possible to use FairPlay:
"Apple has concluded," Jobs said, "that if it licenses FairPlay to others, it can no longer guarantee to protect the music it licenses."
The only cross-platform DRM that was ever announced is RealNetworks Helix, which was discontinued in 2007. Despite open-sourcing some Helix technology, and some vague noises about DRM from those quarters, I don't think a working product was ever released.
WMDRM or "something Flash-based" are the only real options when it comes to content protection, with majors generally only accepting the former when it comes to "download to own" scenarios. Indies typically don't care about DRM at all, fortunately.