Xiaoying_video_1629617123662mp4

Because it was produced by VivaVideo, it is almost certainly a user-generated mobile video created on a smartphone, likely for social media platforms like TikTok, Instagram, or Douyin. Given the date (August 2021), it might be a summer-themed video, a holiday recap, or a creative edit with music and transitions.

Depending on the app version, it might have a "VivaVideo" watermark, though this can usually be removed. 3. A Time Capsule XiaoYing_Video_1629617123662mp4

The video probably features music, text overlays, transitions, and stickers. Because it was produced by VivaVideo, it is

It is likely optimized for mobile viewing (9:16 aspect ratio). This translates to "Little Shadow" or "Little Film

This translates to "Little Shadow" or "Little Film." It is the parent company (QuVideo) and the original Chinese brand name for VivaVideo [1].

This long number is a Unix timestamp , representing the exact time the video was created in milliseconds.

Here is an interesting look at the context of this type of file: 1. The Story Behind the Name