The first thing I'd like to do is to ask you if you're going to be able to get your hands on some of the most popular videos in the world, and if you're not.

If the file is downloaded, theoretically you can watch it, if the computer is not connected to the Internet, it is recommended to install a perfect decode, what format can be played, but in order to prevent the video outflow, some online schools must be connected to the Internet in order to see, and there is encryption, if the perfect decode can not be used, is the video encrypted, it is recommended that you contact Chengdu Seven Middle School online school customer service to buy the original video.