| Previous | Next |
| NS_E_NO_AUDIODATA | NS_E_WME_VERSION_MISMATCH |
NS_E_INPUTSOURCE_PROBLEM
How to interpret the code in a real encoding session
0xC00D1B8A is named NS_E_INPUTSOURCE_PROBLEM. Its practical scope is aggregate source-group health check reports one or more inputs unable to supply data, which belongs to source groups, streams and plug-ins rather than to every part of Windows Media playback or Windows itself.
Mechanism and point of failure
The Encoder object model groups audio, video and script inputs in an IWMEncSourceGroup, associates one profile with that group, and asks a source plug-in to expose a media format that can feed the selected output streams in a session that returns this result.
Successful creation of the COM objects does not prove that the source group is complete; profile assignment, source discovery and format negotiation are later checkpoints in a session that returns this result. A typical reproduction is: one device in an audio/video group disconnects while the other continues. This makes the first result from the Encoder more valuable than a later generic message.
Reproduction matrix
| Field | What to preserve |
|---|---|
| Decisive values | per-source state and HRESULT, active group, last sample time and disconnect events |
| Producing object | source-group collection index and name, active/prepared state, stream type, input scheme and stream name, source plug-in CLSID, negotiated media type and assigned profile |
| 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 inputsource problem boundary |
Evidence matrix
| Observation | How to interpret it |
|---|---|
| Observation that supports it | The decisive evidence is per-source state and HRESULT, active group, last sample time and disconnect events. It confirms aggregate source-group health check reports one or more inputs unable to supply data in the same object generation. |
| Observation that points to an earlier failure | The recorded values satisfy the inputsource problem 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 (aggregate source-group health check reports one or more inputs unable to supply data), but a codec, archive or broadcast sink then fails in a subsequent stage. |
| Verification after correction | Apply this isolated change: identify and repair the first failing source rather than changing the output profile. The original inputsource problem call should then advance past the same checkpoint. |
The operational impact of it is limited to the source groups, streams and plug-ins transition that owns aggregate source-group health check reports one or more inputs unable to supply data. In the representative case where one device in an audio/video group disconnects while the other continues, keep the first failing call and its object identity so a later wrapper cannot replace the inputsource problem evidence.
Minimal experiment
- Record
0xC00D1B8A, it, the Encoder version and the exact API call or property access that returned it. - Export the current
.wmeor.prxconfiguration, then capture per-source state and HRESULT, active group, last sample time and disconnect events. - verify the source groups, streams and plug-ins precondition without changing the source, profile and output sink at the same time.
- Run one controlled comparison in which only this condition changes: identify and repair the first failing source rather than changing the output profile.
- After the change, recreate the affected Encoder object rather than assuming the existing graph discarded its earlier inputsource problem state.
Do not collapse these results together
| Result | Why it is a different boundary |
|---|---|
NS_E_SOURCE_NOTSPECIFIED | final source-group validation finds an incompletely configured source |
NS_E_WME_VERSION_MISMATCH | loading a.wme configuration whose schema or feature set is unsupported by this Encoder version |
NS_E_NOSOURCEGROUPS | starting an Encoder session with an empty source-group collection |
What to change—and what to leave alone
Change the smallest responsible precondition: identify and repair the first failing source rather than changing the output profile. While retesting it, keep all unrelated source, audience and output values fixed until the same call is repeated.
Do not delete and recreate every source group before exporting the.wme configuration and recording the active group; otherwise the failing object relation is lost in a session that returns it.
Authoritative documentation
- Preparing a source group for encoding.
- Retrieving the profile assigned to a source group.
- Retrieving the configured encoder input.
- Saving a Windows Media Encoder configuration.
Looking for a different code? Search another status or error code.