Converting "болно" to Cyrillic - Stack Overflow
The "Ð" and "Ñ" characters are characteristic of UTF-8 encoded Cyrillic text being interpreted as Windows-1252 (Latin-1) . The original filename was likely in a language like Russian or Bulgarian.
Strings like this often appear on platforms (like Telegram or obscure forums) where users share content using randomized or encoded names to avoid automated copyright detection or content filters.
If you are trying to identify the actual content of the .mp4 file, you can use these forensic methods:
13 Apr 2016 — I need to read actual context of this. * encoding. * character-encoding. * character. * cyrillic. Stack Overflow