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MF_E_NOT_INITIALIZED
MF_E_NOT_INITIALIZED differs from MF_E_PLATFORM_NOT_INITIALIZED: the platform may already be running, but this particular source, sink, transform wrapper, or helper object is not ready for the requested method.
Check the local setup sequence
- Verify object creation and any required initialization method completed successfully.
- For transforms, set required media types and obtain stream information before processing samples.
- After a device loss, source recreation, or shutdown, do not reuse a wrapper that still holds stale state.
Record the object type and the last successful setup call; this code is most useful when paired with a lifecycle trace.
Microsoft: basic MFT processing model · Microsoft: IMFTransform::ProcessOutput
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