What do you mean by time-lapse video? How can the delayed video return to normal?

Time-lapse photography is also called time-lapse photography and time-lapse video. English is time-lapse photography, which is a method of compressing time. At present, it is also called time-lapse video. It takes a group of photos or videos, and then through photo stitching or video frame extraction, it compresses the process of minutes, hours or even days and years into a short period of time and plays it out in the form of video. Use the time-delay shooting function of mobile phone to shoot time-delay video. Generally, mobile phones do not have the function of restoring normal speed, but can be restored to normal speed with the help of professional video technology, and users without video editing foundation cannot restore it.