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ERROR_GRAPHICS_OPM_OUTPUT_DOES_NOT_SUPPORT_ACP
ACP is connector-specific analog signaling
ERROR_GRAPHICS_OPM_OUTPUT_DOES_NOT_SUPPORT_ACP means the chosen output cannot apply Analog Copy Protection. ACP is relevant to supported analog television-style outputs; it is not interchangeable with HDCP on HDMI or DisplayPort. The protection type must be queried for the exact IOPMVideoOutput before a level is configured.
Confirm the physical connector and the list returned by OPM_GET_SUPPORTED_PROTECTION_TYPES. An adapter may expose several outputs with different capabilities, and an analog converter can change what the driver can enforce. If the content policy requires ACP, selecting a digital-only path or reducing software rendering quality will not satisfy that requirement; the application must use a compatible output or decline playback.
Capability checks for ACP
- Connector type and the physical monitor associated with the OPM object.
- Supported protection-type bitmask for that output.
- Requested ACP level and any simultaneous CGMS-A requirement.
- Presence of adapters, converters, docks, or capture hardware in the path.
References
- Microsoft: ACP, CGMS-A, HDCP, and DPCP protection flags
- Microsoft: configuring a protection level per connector
- Microsoft: querying the protection actually applied
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