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MF_E_INVALID_STREAM_STATE
What the code tells you
MF_E_INVALID_STREAM_STATE means the requested stream operation is not permitted in the stream's current lifecycle state.
The result comes from the individual stream object rather than the whole source or session. A representative case is a sample request arrives after the stream has stopped or before it has received a start transition.
Evidence to preserve
stream state, source state, most recent start/pause/stop/flush event, pending request, selection flag, and object instance.
Build a useful incident record
Reproduce without erasing context
- Record and verify: stream state, source state, most recent start/pause/stop/flush event, pending request, selection flag, and object instance.
- Run the controlled comparison: wait for the matching stream event and then repeat the same request once.
Comparison with adjacent conditions
| HRESULT | Meaning in the standard description |
|---|---|
MF_E_STREAM_ERROR | An error occurred in media stream. |
MF_E_HW_STREAM_NOT_CONNECTED | Hardware stream is not connected yet. |
MF_E_ALLOCATOR_ALREADY_COMMITED | Memory allocator has already been committed. |
Here, MF_E_MEDIAPROC_WRONGSTATE concerns a processing object; MF_E_STREAM_ERROR reports an actual stream failure.
Resolution and proof
For this occurrence, serialize stream commands and recreate stale stream objects after presentation changes.
Authoritative references
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