Why can't I play the video?
If you experience choppy playback of YouTube videos, it may be due to an unstable internet connection. Please check your network connection.
Video Playback Issues or Premature Ending
If the video plays choppy (intermittently) or ends prematurely, you can try the following troubleshooting methods:
- It may be due to an unstable internet connection. Please check your network connection.
- Pause the video and let it load. Then try playing the video again.
- If the video still cannot play, try closing the program, clearing the cache, and then restarting it.
Can I download or watch videos offline?
Due to the restrictions of YouTube's Terms of Use, we currently cannot provide video download and offline playback functions. We apologize for any inconvenience this may cause.
Why can't I play videos in the background?
YouTube officially does not allow third-party developers to use the background playback function on mobile devices, so background playback is not possible. We apologize for any inconvenience.
Why are some videos available on the desktop version but not in the app?
The videos displayed as "Subtitles have been reviewed" on the computer version have all been carefully selected by a professional team with English explanations, and are accompanied by quizzes and speaking exercises to help users learn from multiple perspectives, which is why they appear on the app.