While there is no official industry-standard report for this specific filename, it most commonly refers to fan-captured "fancams," official behind-the-scenes clips, or social media edits.
If you are looking for the technical "report" of the file's properties, it generally falls within these parameters for K-pop media: Yeji-001.mp4
Likely a high-definition (HD) performance clip, a "bubble" (private message app) video leak, or an Instagram story archive. While there is no official industry-standard report for
Automated tools used by fans to download content from platforms like VLive (archived), YouTube, or TikTok often generate generic sequential filenames. Technical Metadata (Estimated) " official behind-the-scenes clips
1080p (1920x1080) or 4K (3840x2160) for modern fancams.
.mp4 (MPEG-4 Part 14), a universal container format compatible with almost all media players and social platforms. Common Origin: