mp4_amr_320_240_v118_15_a12.sdp
mp4_amr_320_240_v250_20_a12.sdp
mp4_amr_320_240_v384_30_a12.sdp
mp4_amr_vbr_320_240_v58_10_a12.sdp
mp4_amr_vbr_320_240_v198_15_a12.sdp
mp4_amr_vbr_320_240_v298_25_a12.sdp