The suffix .mp4 and the numbering (2) are common for supplementary video materials in academic papers or conference proceedings (e.g., ACM Digital Library or IEEE Xplore). However, no current research papers under this name are widely indexed.
(e.g., is it a music video, an interview, a news report, or a tutorial?) Is it related to a specific event or date? Anna Oonishi (2) mp4
There are various individuals named Anna Onishi on platforms like Instagram or TikTok. If the "(2)" refers to a second part of a video series, it is likely hosted on one of these creator-driven platforms. The suffix