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NS_E_INVALID_INPUT_LANGUAGE
The failing boundary in the Encoder object model
The useful reading of NS_E_INVALID_INPUT_LANGUAGE (0xC00D1B9F) is not merely the standard message shown above. It locates a language value or language index supplied for an input stream is not accepted inside profile, audience and stream topology.
A Windows Media Encoder profile declares content types and one or more audiences in a session that returns this result. Each audience maps source indexes to audio, video, script or file streams and must remain structurally consistent with the other audiences in a multiple-bit-rate profile.
Evidence that separates this code from a wrapper error
Individual fields may be syntactically valid while the complete profile is inconsistent across audiences or does not match the source group in a session that returns this result. For example, a display string is passed where the API expects a language identifier. Preserve the result distinction before a UI layer converts the result into a broad start, capture or profile failure.
| Field | What to preserve |
|---|---|
| Decisive values | raw language value, source index, language collection and expected identifier format |
| Producing object | profile name and content type, audience count and total bitrate, source indexes, stream types, language identifiers, selected audiences and result of IWMEncProfile2.Validate |
| Session correlation | the same source-group generation, audience index, object identity and callback sequence that produced this result |
| Lower-level evidence | the first COM, driver, file-system or codec HRESULT observed before the Encoder mapped the condition to this result |
| Controlled comparison | a known-good session that changes only the setting named in the invalid input language boundary |
Interpret the next measurement
| Observation | How to interpret it |
|---|---|
| Observation that supports it | The decisive evidence is raw language value, source index, language collection and expected identifier format. It confirms a language value or language index supplied for an input stream is not accepted in the same object generation. |
| Observation that points to an earlier failure | The recorded values satisfy the invalid input language rule, but a source, driver, COM activation or file operation returns a different HRESULT first. |
| Observation that points to a later failure | The Encoder passes this boundary (a language value or language index supplied for an input stream is not accepted), but a codec, archive or broadcast sink then fails in a subsequent stage. |
| Verification after correction | Apply this isolated change: use a language entry present and valid for the selected stream. The original invalid input language call should then advance past the same checkpoint. |
The operational impact of it is limited to the profile, audience and stream topology transition that owns a language value or language index supplied for an input stream is not accepted. In the representative case where a display string is passed where the API expects a language identifier, keep the first failing call and its object identity so a later wrapper cannot replace the invalid input language evidence.
Test the condition without rewriting the session
- Record
0xC00D1B9F, it, the Encoder version and the exact API call or property access that returned it. - Export the current
.wmeor.prxconfiguration, then capture raw language value, source index, language collection and expected identifier format. - verify the profile, audience and stream topology precondition without changing the source, profile and output sink at the same time.
- Run one controlled comparison in which only this condition changes: use a language entry present and valid for the selected stream.
- After the change, recreate the affected Encoder object rather than assuming the existing graph discarded its earlier invalid input language state.
Interpret neighboring results carefully
| Result | Why it is a different boundary |
|---|---|
NS_E_INVALID_INPUT_AUDIENCE_INDEX | an audience index supplied to profile or input mapping is outside the collection |
NS_E_INVALID_INPUT_STREAM | an input stream type or index does not identify a valid source stream |
NS_E_VBRMODE_MISMATCH | the same source index uses different rate-control modes across audiences |
Resolution and verification
The direct repair for this occurrence is to use a language entry present and valid for the selected stream. Recreate the affected source group, profile or output object, repeat the same operation, and confirm that the first failing HRESULT no longer comes from the invalid input language checkpoint.
Do not repair a profile by deleting arbitrary audiences; export the.prx first and compare the same source index across every audience in a session that returns it.
References for the boundary
- Adding an audience to an encoder profile.
- IWMEncAudienceObj.TotalBitrate.
- Retrieving the profile assigned to a source group.
- Detecting profile compatibility.
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