留学生视频用语可以包括以下几种：

没听清内容

Sorry, I didn’t quite catch that. Could you repeat what you said earlier？

网卡了

Sorry, the internet is lagging. I was cut off.

不想开摄像头

Sorry, I am currently not in a good state for video connection.

对方说话声音小

Could you speak up a bit？

这些用语可以帮助留学生在视频中更顺畅地进行沟通，避免因技术问题或听力障碍带来的误解。