does that mean the gpu is busy

[china_y_]

my cpu is i7 HD4000

i encode two 1920*1080 and render them  this time the cpu is low about 30%

but when i add another one the cpU become 70%

i am confused  

does  that mean when the gpu is  busy  ,the media sdk will use cpu to encode  the video ?

 thanks for any suggestion 

[Petter_L_Intel]

Hi,

Rendering impact on Processor and/or Intel HD Graphics will depend heavily on the methods used for rendering, and will also depend on OS version and DirectX framework version used.

To verify optimal behavior/performance of Media SDK and HW codec acceleration I suggest you remove all rendering and file writing.

Regards,
Petter