It would be amazing

所以开发者并不打算开发服务器版本？我希望在服务器装载replay mod后，能实时录制在线玩家的录像，并保存到服务器文件夹

It's already there.

@ayangd Please tell me more. I don't know of any up-to-date mod/plugin to do server-side recording to mcpr-files which actually works.

What? Isn't it there? I saw it recording when I play in Multiplayer.

There's a difference between the client-side mod recording a multiplayer session and a (non-existing) server-side mod recording every player's session. This issue is asking for the latter.