By default, video records at 30 fps (frames per second). Depending on
your model, you can choose other frame rates and video resolution
settings.
The faster the frame rate and the higher the resolution, the larger the
resulting video file.
Video quality can be switched from either 4K / 1080p / 720p.
Note:
Only several models could set video quality on your own.
Open "Camera", drag the slider down at the bottom of the phone to
switch to video recording.
Take photos while shooting a video: You can also tap the Shutter button
in the lower-left corner of the screen to save as photos while you are
recording a video, and it won't interrupt the shooting.
Video Bokeh
After the rear, the blur adjustment of the front lens is handed to you.
Blurring is more powerful, self-timer and he is free to shoot. The problem
