If some videos popped up automatically while reading the novel and interfered with the reading, you could try to find the relevant options in the browser settings. In the browser, open the settings option and then select the "Advanced" option. Then, in the "content" tab, find the "auto-complete" setting and uncheck the "username and password on the form". This way, when you enter your username and password, the browser will not automatically pop up a video window. You can also try to use the browser's tool bar such as the "Clipboard" and "Bookmarks" in the Chrome-based browser to turn off the auto-playing video. You can also check the video's address through the developer tools in the browser and use the code to close the video. If you are using another browser, you can try to search for the relevant tutorial and find the corresponding setting option to close it.