It is likely optimized for mobile viewing (9:16 aspect ratio).

"XiaoYing" is the Chinese name for the VivaVideo app, and these specific, long-string filenames are automatically generated when a user exports a video they have edited, trimmed, or added effects to within the app.

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.

The video probably features music, text overlays, transitions, and stickers.

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

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

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

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