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NS_E_NO_DATAVIEW_SUPPORT
Diagnostic meaning beyond the standard text
For NS_E_NO_DATAVIEW_SUPPORT (0xC00D1B82), the actionable event is request for Encoder Video panel data from a source or output path that cannot expose preview samples. Keep the result producing boundary attached to the original Encoder callback or COM call.
Why the session can reach this point
A live video source passes through device opening, capture-format negotiation, optional clipping and preview-window setup before an encoder codec accepts the frames in a session that returns this result. Width, height, pixel format and driver state belong to this boundary.
Seeing a device in enumeration or obtaining a preview frame does not establish that the requested capture format can be delivered continuously to the encoder in a session that returns this result. One concrete way to reach the condition is that a headless custom source supplies compressed packets but no previewable frames. The result test should therefore preserve the object generation and numeric settings, not just a screenshot of the final dialog.
Trace fields with diagnostic value
| Field | What to preserve |
|---|---|
| Decisive values | source type, preview/data-view flag, active graph and whether a renderer-compatible video stream exists |
| Producing object | device moniker, driver version, requested and native width/height, frame rate, BITMAPINFOHEADER compression and bit depth, preview state, source-plug-in result and first driver error |
| 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 dataview support boundary |
Decision matrix
| Observation | How to interpret it |
|---|---|
| Observation that supports it | The decisive evidence is source type, preview/data-view flag, active graph and whether a renderer-compatible video stream exists. It confirms request for Encoder Video panel data from a source or output path that cannot expose preview samples in the same object generation. |
| Observation that points to an earlier failure | The recorded values satisfy the no dataview support 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 (request for Encoder Video panel data from a source or output path that cannot expose preview samples), but a codec, archive or broadcast sink then fails in a subsequent stage. |
| Verification after correction | Apply this isolated change: disable data view for that source or use a preview-capable video path. The original no dataview support call should then advance past the same checkpoint. |
The operational impact of it is limited to the video capture and compressor negotiation transition that owns request for Encoder Video panel data from a source or output path that cannot expose preview samples. In the representative case where a headless custom source supplies compressed packets but no previewable frames, keep the first failing call and its object identity so a later wrapper cannot replace the no dataview support evidence.
Decision path
- Record
0xC00D1B82, it, the Encoder version and the exact API call or property access that returned it. - Export the current
.wmeor.prxconfiguration, then capture source type, preview/data-view flag, active graph and whether a renderer-compatible video stream exists. - verify the video capture and compressor negotiation precondition without changing the source, profile and output sink at the same time.
- Run one controlled comparison in which only this condition changes: disable data view for that source or use a preview-capable video path.
- After the change, recreate the affected Encoder object rather than assuming the existing graph discarded its earlier no dataview support state.
Codes with similar symptoms but different owners
| Result | Why it is a different boundary |
|---|---|
NS_E_INCORRECTCLIPSETTINGS | validation of crop margins against source dimensions |
NS_E_UNSUPPORTED_ENCODER_DEVICE | opening a device that enumerates but is not supported by the Encoder source plug-in |
NS_E_VIDCAPDRVINUSE | detection of an already active stream on the same video driver |
Safe recovery
Resolve the producing condition by ensuring that you disable data view for that source or use a preview-capable video path. Then rebuild only the portion of the Encoder graph affected by it and verify the original call.
Do not keep retrying an unstable capture driver in the same process after preserving the first error; close the graph and test one known-native format in a fresh process in a session that returns it.
Source material
- IWMEncVideoSource2.Width and live capture sizing.
- BITMAPINFOHEADER structure.
- ICCompressQuery video-compressor format check.
- Retrieving the configured encoder input.
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