1, check the network connection: make sure your network connection is stable. Unstable network connection causes the video to load slowly or cannot be dragged. Connect to a more stable network, such as using a wired network connection or switching to a stronger Wi-Fi signal.

2, clear the cache and cookies: the browser's cache and cookies will lead to video playback problems. Clear the browser's cache and Cookie and reload the video page. This will help to eliminate conflicts or mistakes.