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NS_E_UNSUPPORTED_PROPERTY
NS_E_UNSUPPORTED_PROPERTY: diagnosis and verification
As a controlled comparison, NS_E_UNSUPPORTED_PROPERTY (0xC00D0BCD) means the selected SDK object does not implement the requested property identifier.
Profile and sample evidence
| Capture | Why it matters |
|---|---|
| Owning call | Record the API method, object identity, thread or callback and timestamp for the unsupported property media-format check. |
| Values to record | object interface, attribute or property identifier, stream number, data type, mutability flags and the operation used to set or retrieve it. |
| Comparison case | Use one known-good resource that exercises the same unsupported property media-format check while changing only the rejected precondition. |
Failure anatomy
The unsupported property media-format check is reached when the selected SDK object does not implement the requested property identifier. The caller must not assume that the next filter, packet, session or metadata state exists after it.
Query the object capability and existing attribute type first, then perform the same operation on one documented writable property. If the same operation then returns a different HRESULT, diagnose that later result separately.
Nearby results are not interchangeable
Main distinction: It belongs to format, profile or sample processing, not merely to file-name or network resolution.
| Nearby HRESULT | How to compare it |
|---|---|
NS_E_NOT_CONNECTED | the network-backed source has no usable connectivity for the requested URL. |
NS_E_TOO_MUCH_DATA | samples are arriving faster than the configured encoding path can consume or buffer them. |
NS_E_NO_MORE_SAMPLES | the reader reached the end of the selected range or stream enumeration. |
A controlled media-format test
- Log
0xC00D0BCD, the exact operation and the first failure time. - Preserve object interface, attribute or property identifier, stream number, data type, mutability flags and the operation used to set or retrieve it.
- Perform one isolated test: query the object capability and existing attribute type first, then perform the same operation on one documented writable property.
- Repeat through the same API and protocol path; a different player or local-copy test is useful only as a comparison, not as proof that the unsupported property media-format check is fixed.
Misleading actions
- changing several profile and codec settings at once, which hides the first incompatible field.
- Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the unsupported property media-format check.
Technical references
- Windows Media Format SDK overview
- Input, stream and output formats
- Profiles
- Windows Media SDK objects
- Microsoft HRESULT registry
Treat it as resolved only when the same API path succeeds at this stage; success through a different player or cached copy is merely supporting evidence.
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