Constant MFX_IMPL_HARDWARE 

pub const MFX_IMPL_HARDWARE: i32 = 0x0002;

A single specific hardware implementation. (mfxcommon.h)

Do not pass this alone to MFXInitEx against a directly-loaded implementation library (this crate’s MVP dispatcher, bypassing the real oneVPL dispatcher — see dispatcher module docs): hardware-confirmed on this workspace’s Intel UHD 770 to return MFX_ERR_UNSUPPORTED from libmfxhw64.dll. Use MFX_IMPL_HARDWARE_ANY instead — see that constant’s docs for why.