MOV_CH_LAYOUT_QUADRAPHONIC  189 libavformat/mov_chan.c     { MOV_CH_LAYOUT_QUADRAPHONIC,       AV_CH_LAYOUT_QUAD    }, // L, R, Rls, Rrs
MOV_CH_LAYOUT_QUADRAPHONIC  367 libavformat/mov_chan.c     MOV_CH_LAYOUT_QUADRAPHONIC,
MOV_CH_LAYOUT_QUADRAPHONIC  422 libavformat/mov_chan.c     MOV_CH_LAYOUT_QUADRAPHONIC,