Xiaoying_video_1629617123662mp4

This file is a "time capsule" from August 2021, representing a specific moment in someone's life—a summer trip, a family event, or a creative project—captured and edited on their phone.

Based on the filename provided, is a video file generated by VivaVideo , a popular mobile video editing app [1]. XiaoYing_Video_1629617123662mp4

This long number is a Unix timestamp , representing the exact time the video was created in milliseconds. This file is a "time capsule" from August