mp4_aac+_352_288_v104_10_a16_44_m.sdp
mp4_aac+_352_288_v256_20_a24_44_s.sdp
mp4_aac+_352_288_v384_30_a48_48_s.sdp
mp4_aac+_vbr_352_288_v196_15_a24_32_m.sdp
mp4_aac+_vbr_352_288_v308_25_a32_44_m.sdp