CH_WIDE_PAIR      852 libavfilter/avfiltergraph.c     { CH_FRONT_PAIR,      CH_WIDE_PAIR       },
CH_WIDE_PAIR      855 libavfilter/avfiltergraph.c     { CH_CENTER_PAIR,     CH_WIDE_PAIR       },
CH_WIDE_PAIR      857 libavfilter/avfiltergraph.c     { CH_WIDE_PAIR,       CH_FRONT_PAIR      },
CH_WIDE_PAIR      858 libavfilter/avfiltergraph.c     { CH_WIDE_PAIR,       CH_CENTER_PAIR     },
CH_WIDE_PAIR      859 libavfilter/avfiltergraph.c     { CH_WIDE_PAIR,       AV_CH_FRONT_CENTER },
CH_WIDE_PAIR      862 libavfilter/avfiltergraph.c     { AV_CH_FRONT_CENTER, CH_WIDE_PAIR       },