The filename "video_2021-05-16_23-11-53 part1.rar" represents a split, compressed video recording from May 16, 2021, likely generated by Telegram, security software, or screen capture tools. Accessing the content requires acquiring all associated RAR parts and extracting them using tools like WinRAR to reconstruct the original video file. To open this specific file, you will need all accompanying parts of the archive.