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When test video output, I am getting vfip_capture error, please help!

while tested EVM board, I used simple decode program, but I am getting errors as following:

root@dm6467t-evm:/opt/dvsdk/dm6467# ./decode -v /videos/winter.264 -O composite
Decode demo started.
vpif_capture vpif_capture: No sub device registered
Error: Failed to create display device 

I can see I may have some issues with display device, why the vfip_capture error pops up for display?