AV_CH_LAYOUT_SURROUND   90 3rdparty/include/ffmpeg_/libavutil/channel_layout.h #define AV_CH_LAYOUT_3POINT1           (AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY)
AV_CH_LAYOUT_SURROUND   91 3rdparty/include/ffmpeg_/libavutil/channel_layout.h #define AV_CH_LAYOUT_4POINT0           (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_CENTER)
AV_CH_LAYOUT_SURROUND   95 3rdparty/include/ffmpeg_/libavutil/channel_layout.h #define AV_CH_LAYOUT_5POINT0           (AV_CH_LAYOUT_SURROUND|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
AV_CH_LAYOUT_SURROUND   97 3rdparty/include/ffmpeg_/libavutil/channel_layout.h #define AV_CH_LAYOUT_5POINT0_BACK      (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)