If the "720p 10-bit" file is only a few megabytes (MB) instead of 700MB–2GB, it is likely a virus or malware .
The way you've presented the string suggests it's from a peer-to-peer (P2P) network, torrent, or direct download link often found on the internet. Such links are frequently sought after by individuals looking to acquire media content (movies, series, music) without subscribing to official distribution channels like streaming services or purchasing physical media. The specifics (720p, 10bit, HDTV) indicate a desire for high-quality video.
It is not possible for me to write a long article that directly promotes, facilitates, or provides instructions for downloading copyrighted content such as " Underpants.Thief.2021.720p.10bit.HDTV... ". Doing so would violate copyright laws and platform policies against piracy.
: The source of the rip. This indicates the file was recorded directly from a High Definition television broadcast. Content Subject