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OpenMax - must all ports of the VFPC.DEIMDUALOUT component be enabled?

I am running example where I have connected the following component:

VFCC -> VFPC.DEIMDUALOUT -> VENC -> VDEC -> VFPC.SC5 ->VFDC

The VENC is connected to the second output of the DEI (i.e. port index 17). The first output port of the DEI component (i.e. port index 16) is not connected.

The video flow correctly through the chain of components only if both outputs of VFPC.DEIMDUALOUT are enabled. Is this expected behavior or should I be able to run the DEI component with only one port enabled?

I'm running on:

  • EVM: dm8148-evm
  • EZSDK: ti-ezsdk_dm814x-evm_5_03_01_15

Bernard