Grand Theft Auto: San Andreas
In the modding community for , cutsc.img (often referred to as "cutsimg") is the critical archive file containing the high-quality character models and animations used exclusively during the game's cinematic cutscenes.
When your game is working correctly, the game loads cutsimg.img right before a cinematic plays. When the file is missing, corrupted, or outdated, your game defaults to the open-world models inside the cutscene environment—resulting in the "fish lips" and awkward clipping glitches.