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MF_E_ITA_UNRECOGNIZED_DIGITAL_VIDEO_OUTPUT
MF_E_ITA_UNRECOGNIZED_DIGITAL_VIDEO_OUTPUT is a protected-output classification failure for a digital video path. The WMDRM input trust authority receives output information that it cannot identify as a supported digital output for policy translation.
Inspect the actual rendering/output topology
- Record the sink, trusted-output implementation, OTA action, and the digital output attributes presented to policy generation.
- Check whether a virtual display, remote path, custom presenter, or unusual output component changes how the connector is exposed.
- Compare with a known supported digital output using the same protected asset and action.
Do not jump directly to HDCP troubleshooting. HDCP authentication is a later link-protection mechanism for a recognized output; this HRESULT says the ITA does not recognize the digital output classification itself. Likewise, MF_E_POLICY_UNSUPPORTED assumes a policy/output negotiation that can identify the output. Preserve the topology and output identity before the application replaces the error with a generic playback failure.
Microsoft: IMFTrustedOutput · Microsoft: digital/video output attributes · Microsoft: protected output policy
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