Hyacinthe Rigaud (1659-1743) – Philipp Ludwig Wenzel, Count Sinzendorf (1671-1742) Kunsthistorisches Museum

The picture has something of this: people, wear, costume, woman, portrait, veil, performance, theater, traditional, opera, Gothic, Renaissance, music, man, fashion, theatre.
Perhaps it’s a painting of a man in a red and white outfit sitting in a chair with his hands in his pockets and his right hand in his other hand.