Why does playing video with your own photo album become bigger and automatically fill the screen?

Turn on the playback settings when playing a video with a mobile phone photo album. There are full-screen ones, 100%, and several others. Click 100% to view. Don't click full screen. This is set when your mobile phone used to watch videos, or it may be the original mobile phone. Just change it. The problem is not big. When playing a video with a mobile phone photo album, turn on the playback settings and it will be full. There are a few more. Click 100% instead of full screen. This was set when your mobile phone was watching videos before, or it may already be in your mobile phone. Just change it. The problem is not big. Play the video with your phone's own photo album, and turn on the playback settings. It's all over the screen, 100%, and there are a few more. Click 100. It is also possible that the mobile phone is already available and can be changed. The problem is not big. When playing video with the photo album that comes with your mobile phone, turn on the playback settings. There is a full screen in it, 100%, and a few more. Click 100% to view. Don't click full screen. This is set when your mobile phone used to watch videos, or it may be the original. Just change it. The problem is not big. When playing video with the photo album that comes with your mobile phone, turn on the playback settings. There is a full screen in it, 100%, and a few more. Please click 100% to view. Don't click full screen. This was previously set by your phone while watching the video, or it may already be in your phone. Just change it. The problem is not big.