How to set NVidia Encoder Filter frame

Accelerated Computing CUDA CUDA Programming and Performance
1

I use directShow to build a graph include NVidia EncoderFilter.
I try to change frame rate by SetParamValue(NVVE_FRAME_RATE,framerate)then return value is E_FAIL
does everybody know how to set the frame rate?

Thank you

2

I use directShow to build a graph include NVidia EncoderFilter.
I try to change frame rate by SetParamValue(NVVE_FRAME_RATE,framerate)then return value is E_FAIL
does everybody know how to set the frame rate?

Thank you