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| NS_E_NO_VALID_OUTPUT_STREAM | NS_E_NO_ACTIVE_SOURCEGROUP |
NS_E_NO_VALID_SOURCE_PLUGIN
NS_E_NO_VALID_SOURCE_PLUGIN: isolate the owning operation
NS_E_NO_VALID_SOURCE_PLUGIN (0xC00D1B71) is not a catch-all media error. It reports that the encoder cannot find or activate a source plug-in capable of opening the configured input.
Do not discard these details
- Capture source URL/type, selected plug-in CLSID, COM activation result, process bitness, registered server path, and the first interface/query failure.
- Preserve the first HRESULT or lower-level result produced before cleanup or automatic retry changes the state.
How to prove the correction
Repair the matching plug-in registration or choose a plug-in that advertises support for the source type; verify activation before testing encoding.
Technical references
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