MFXVideoSession cannot be initialized in MFX_IMPL_HARDWARE

[jigong]

Hi,

I used to decode H264 stream inMFX_IMPL_HARDWARE mode on Intel Core i-7 2700K. Today I replaced CPU with Intel Core i5-2500K and i3-2125, I met the same problems: MFXVideoSession.init(MFX_IMPL_HARDWARE, ver) return -3, which mean I cannot decode in hw. I tried software implementation. They worked.

Thank for any advice?

Jiuxiang

[Nina_K_Intel]

Hi Jiuxuang,

what value is "ver" assigned to? The platforms you mention have MSDK libraries with API 1.1, so they will support ver equal or less than 1.1.

Regards,

Nina

[jigong]

Hi Nina,

ver = {0,1}.

Thanks.

Jiuxiang

[jigong]

I replaced I7-2700k again. MFXVideoSession can be initialized in HW implementation.

[Eric_S_Intel]

The Media SDK hardware loading mechanism uses the DeviceID key of HKLM\Software\Intel\MediaSDK\Dispatch.

When you switch the CPU, you switch the device ID and cause a mismatch. Try switching the CPU back to the Core i3 or Core I5, and then re-installing the graphics driver. This will cause the DeviceID key to be updated.

Let me know if this helps

-Eric

[jigong]

Fixed the problem once reinstall graphics driver (Intel graphics driver center).

Thanks