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h263_amr_176_144_v68_12_a12.sdp
h263_amr_176_144_v190_15_a12.sdp
h263_amr_176_144_v250_20_a12.sdp
h263_amr_176_144_v384_30_a12.sdp
h263_amr_vbr_176_144_v108_15_a12.sdp
h263_amr_vbr_176_144_v238_25_a12.sdp