Constant rsmpeg::ffi::AVFrameSideDataType_AV_FRAME_DATA_DOWNMIX_INFO

pub const AVFrameSideDataType_AV_FRAME_DATA_DOWNMIX_INFO: u32 = 4; // 0x0000_0004u32

Metadata relevant to a downmix procedure. The data is the AVDownmixInfo struct defined in libavutil/downmix_info.h.