How to solve the problem of automatic fast forward of video shooting by mobile phone

You are talking about time-lapse photography!

It is not a pure camera shooting, but a synthesis of a large number of still photos. For example, sunrise, plane take-off and landing, rapid changes in cities in the morning and evening, flowering of plants, crowds in the streets, and so on. ...

This kind of shooting is a fixed camera, usually a tripod or a hand-held, but try to make the connection smoother when composing.

Usually take a picture every once in a while, maybe one minute or ten minutes. Then use many photos to synthesize a video.

Will achieve the effect of fast forward as you said. You can usually take pictures according to the desired effect, and it is a time-consuming and laborious job to take pictures at the playback speed of 15 -30 pictures per second.

You can search time-lapse photography. That's what you said.

The specific shooting methods and steps will be a little different depending on the subject matter. Especially at night, be sure to shoot.

If you have any other questions, please ask them again.