Refers to the H.264/MPEG-4 AVC compression codec used to encode the video.
allocine.fr/film/fichefilm_gen_cfilm=288451.html">cast and crew ? Coup de théâtre FRENCH WEBRIP x264 2022
These are "mojibake" characters (errors in character encoding) representing the French letters é and â in the word théâtre . Refers to the H
The filename you provided contains common digital media tags: Coup de théâtre FRENCH WEBRIP x264 2022