MOV_CH_LAYOUT_MPEG_3_0_B  177 libavformat/mov_chan.c     { MOV_CH_LAYOUT_MPEG_3_0_B,         AV_CH_LAYOUT_SURROUND }, // C, L, R
MOV_CH_LAYOUT_MPEG_3_0_B  364 libavformat/mov_chan.c     MOV_CH_LAYOUT_MPEG_3_0_B,
MOV_CH_LAYOUT_MPEG_3_0_B  408 libavformat/mov_chan.c     MOV_CH_LAYOUT_MPEG_3_0_B,