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NS_E_WMPCORE_VIDEO_TRANSFORM_FILTER_INSERTION
Where the Player stopped
0xC00D10B2 maps to NS_E_WMPCORE_VIDEO_TRANSFORM_FILTER_INSERTION. Its actionable interpretation is the core cannot insert the video transform used for display adjustments into the current graph within the WMP playback core, graph and media-resource boundary; the producing mechanism is the core that resolves Player.URL, selects or builds a playback graph, chooses codecs and devices, prerolls media and advances between playlist items while reporting asynchronous errors.
An additional test is to record renderer, media subtype, graph topology and transform insertion HRESULT; that evidence is more useful than reinstalling the Player or changing several unrelated settings at once.
How this layer works
The playback core video transform filter insertion workflow must be separated from a generic WMP failure: the URL, playlist item, selected source, graph and codec are distinct objects; a failure at one should not be diagnosed by replacing all of them at once. It also matters that the Error and MediaError paths can queue several results, so the first specific HRESULT and its error context are more useful than the last dialog.
Representative case for playback core video transform filter insertion: Contrast control requests a transform not compatible with the active video path.
Evidence to capture before retry
| Field | What to record |
|---|---|
| What to verify | Record renderer, media subtype, graph topology and transform insertion HRESULT |
| Artifact identity | Play state and transition immediately before failure for this reproduction |
| Runtime state | Selected graph/source/filter or codec identity and version for this reproduction |
| Owning object | Audio/video device identity and driver generation for this reproduction |
| Lower-level result | Ordered ErrorItem queue with errorCode, errorContext and media object for this reproduction |
| Correlation | Player.URL, current media sourceURL and resolved final URL for this reproduction |
Why the symbolic name matters
| Result | Different condition |
|---|---|
NS_E_WMPCORE_MEDIA_UNAVAILABLE | The media resource is currently unavailable at its local, removable or network location |
NS_E_WMPCORE_MISMATCHED_RUNTIME | The media was produced for, or parsed against, a runtime contract incompatible with the active WMP core |
NS_E_WMPCORE_BUSY | The Player core is occupied by an operation that prevents opening or playing this item now |
A focused diagnostic sequence
- Preserve
0xC00D10B2, the ErrorItem context and the object instance involved in the failing operation. - Confirm the failure directly: record renderer, media subtype, graph topology and transform insertion HRESULT.
- After you use a compatible graph/renderer or omit the unsupported adjustment, recreate the owning WMP object and verify that the corrected generation completes.
Correct the producing condition
Change the responsible precondition rather than masking the symptom: use a compatible graph/renderer or omit the unsupported adjustment.
- Avoid installing broad codec packs before identifying the requested media subtype and missing component; it can destroy the artifact or state needed to explain this result.
- Avoid clearing the error queue or skipping to another playlist item before preserving the first failing media object; that can replace the original HRESULT with a secondary failure from another layer.
Regression check
Keep one fixture that reproduces 0xC00D10B2 and one corrected fixture that changes only the identified precondition.
Technical references
- Windows Media Player SDK — API or format context.
- Player MediaError event — documentation for this result.
- ErrorItem object — normative or platform material relevant to this result.
- Supported protocols and file types
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