Common aspect ratios are 16:9 and 4:3.
k ɑ m ə n WORD_BOUNDARY æ s p ɛ k t WORD_BOUNDARY ɹ eɪ ʃ ɪ oʊ z WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY s ɪ k s t iː n WORD_BOUNDARY n aɪ n WORD_BOUNDARY æ n d WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY θ ɹ iː WORD_BOUNDARY