mp4_aac_176_144_v50_12_a20_16_m.sdp
mp4_aac_176_144_v180_15_a48_32_m.sdp
mp4_aac_176_144_v250_20_a48_32_s.sdp
mp4_aac_176_144_v300_25_a96_44_s.sdp
mp4_aac_176_144_v384_30_a128_48_s.sdp
mp4_aac_vbr_176_144_v34_10_a16_8_m.sdp
mp4_aac_vbr_176_144_v106_15_a24_22_s.sdp