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MF_S_VIDEO_DISABLED_WITH_UNKNOWN_SOFTWARE_OUTPUT
MF_S_VIDEO_DISABLED_WITH_UNKNOWN_SOFTWARE_OUTPUT is a protected-output policy status. It indicates that video was deliberately disabled because the protected path encountered a software output whose protection behavior could not be established. This is not equivalent to a decoder failing to produce frames.
Inspect the output side of the resolved protected topology
- Record every sink or MFT that sends content outside the Media Foundation pipeline and whether it exposes
IMFTrustedOutput. - Enumerate the output trust authorities and actions reported by the trusted output.
- Preserve
MEPolicyReportandMEPolicyErrorevents around the point where video is disabled.
In PMP, components that release protected content outside the pipeline participate in output-policy negotiation. Replacing a codec or changing the input file format does not establish trust for an unknown software output. The useful comparison is a topology that renders through a known trusted sink versus one that introduces a custom renderer, transform, screen path, or other software output.
Microsoft: IMFTrustedOutput · Microsoft: Protected Media Path · Microsoft: policy events
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