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MF_E_TOPO_UNSUPPORTED
MF_E_TOPO_UNSUPPORTED is a topology-loader capability failure. It is broader than a missing codec: the loader encountered topology behavior or structure that it cannot resolve using its supported rules.
Reduce the topology to the unsupported construct
- Submit a minimal partial topology with selected source stream nodes connected to appropriate output nodes.
- Add custom transforms, tee branches, optional nodes, and special connection methods back one at a time.
- Check topology and node attributes that alter loader behavior, including hardware mode, dynamic-change restrictions, and connection method.
If the same source and sink resolve in a minimal topology, the failure is structural rather than evidence that the media format is unsupported. This distinction matters because adding codecs will not make an unsupported loader operation valid.
Microsoft: creating playback topologies · Microsoft: topology attributes · Microsoft: topology node attributes
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