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NS_E_NO_SCRIPT_STREAM
The failing boundary in the Encoder object model
The useful reading of NS_E_NO_SCRIPT_STREAM (0xC00D1B73) is not merely the standard message shown above. It locates submission of script data when the current source group has no script source inside source groups, streams and plug-ins.
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.
Evidence that separates this code from a wrapper error
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. For example, an application reuses a script callback after switching to an audio/video-only group. 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 | active source-group identity, script source count and SendScript call timing |
| 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 no script stream boundary |
Interpret the next measurement
| Observation | How to interpret it |
|---|---|
| Observation that supports it | The decisive evidence is active source-group identity, script source count and SendScript call timing. It confirms submission of script data when the current source group has no script source in the same object generation. |
| Observation that points to an earlier failure | The recorded values satisfy the no script stream 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 (submission of script data when the current source group has no script source), but a codec, archive or broadcast sink then fails in a subsequent stage. |
| Verification after correction | Apply this isolated change: add and configure a script stream in the matching profile/source group or stop sending script commands. The original no script stream 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 submission of script data when the current source group has no script source. In the representative case where an application reuses a script callback after switching to an audio/video-only group, keep the first failing call and its object identity so a later wrapper cannot replace the no script stream evidence.
Test the condition without rewriting the session
- Record
0xC00D1B73, it, the Encoder version and the exact API call or property access that returned it. - Export the current
.wmeor.prxconfiguration, then capture active source-group identity, script source count and SendScript call timing. - 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: add and configure a script stream in the matching profile/source group or stop sending script commands.
- After the change, recreate the affected Encoder object rather than assuming the existing graph discarded its earlier no script stream state.
Interpret neighboring results carefully
| Result | Why it is a different boundary |
|---|---|
NS_E_NO_VALID_OUTPUT_STREAM | mapping source media to at least one output stream declared by the profile |
NS_E_NOSOURCEGROUPS | starting an Encoder session with an empty source-group collection |
NS_E_NO_MEDIAFORMAT_IN_SOURCE | preparation of a source whose plug-in has not exposed a media format |
Resolution and verification
The direct repair for this occurrence is to add and configure a script stream in the matching profile/source group or stop sending script commands. 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 no script stream checkpoint.
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.
References for the boundary
- 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.
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