The video release of this film is happy news for fans of George Sanders' particular brand of cinematic spleen. The Private Affairs of Bel Amicasts Sanders as a Parisian womanizer who uses marriage to advance his career while ignoring his one faithful lover (Angela Lansbury). Hollywood censors demanded a final comeuppance, but the star takes the full, decadent measure of his role when he eyes one middle-aged conquest and mutters, ''I have lighted a fire in an old, soot-filled chimney.'' At such moments Sanders makes stylish thoughtlessness totally compelling. B

