请原谅我的愚蠢，我想播放视频但是我无法找到media类，与此同时我找到的教程都是使用media类的。它在额外的包里还是在其他地方
en ：
Forgive my stupidity, I want to play a video but I can't find the media class, and in the meantime the tutorials I find use the media class. Is it in an extra bag or somewhere else
请原谅我的愚蠢，我想播放视频但是我无法找到media类，与此同时我找到的教程都是使用media类的。它在额外的包里还是在其他地方 en ： Forgive my stupidity, I want to play a video but I can't find the media class, and in the meantime the tutorials I find use the media class. Is it in an extra bag or somewhere else