HRESULT 0xC00DA028 (MF_E_NO_MORE_DROP_MODES): meaning and diagnosis

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The component cannot support the requested or a more aggressive quality drop mode.

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MF_E_CLOCK_NOT_SIMPLE	MF_E_NO_MORE_QUALITY_LEVELS

MF_E_NO_MORE_DROP_MODES

MF_E_NO_MORE_DROP_MODES is a defined IMFQualityAdvise::SetDropMode result. The requested drop mode is not supported, and the component also has no higher, more aggressive drop mode available.

Record the quality-manager request and current component state

Log the requested MF_QUALITY_DROP_MODE, the current drop mode from GetDropMode, and the component receiving the request.
Do not blindly increment the drop mode and retry; the HRESULT explicitly says the requested mode and higher modes are unavailable.
For media sources, correlate MEStreamThinMode events with the request because switching between thinned and non-thinned output is asynchronous.

Drop mode is a quality-management control used to let a component discard samples more aggressively under pressure. It is different from DropTime, which requests rapid dropping over a specific absolute time interval, and from quality levels, which change how a component consumes or produces samples. Keep those three control mechanisms separate in diagnostics.

Microsoft: IMFQualityAdvise::SetDropMode · Microsoft: IMFQualityAdvise · Microsoft: video quality management

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