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NS_E_SDK_BUFFERTOOSMALL
What NS_E_SDK_BUFFERTOOSMALL means at its owning API
When this result (0xC00D0BD4) appears, the first blocked transition is the caller-provided output buffer is smaller than the size reported by the SDK. In practice, the sdk buffertoosmall media-format check must be reconstructed from the same URL, stream, object instance and call sequence.
A controlled media-format test
- Log
0xC00D0BD4, this result, the exact operation and the first failure time. - Preserve requested byte count, returned required size, structure version, caller allocation size and whether the call was a size-probe or data call.
- Perform one isolated test: repeat the documented size-query call, allocate exactly the returned size plus required alignment, and retry without changing the object or property identifier.
- 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 sdk buffertoosmall media-format check is fixed.
What completed, and what did not
Before the sdk buffertoosmall media-format check, earlier setup may have succeeded, but the caller-provided output buffer is smaller than the size reported by the SDK was not completed. This is why logs should preserve both the last successful call and this result.
For a targeted comparison, repeat the documented size-query call, allocate exactly the returned size plus required alignment, and retry without changing the object or property identifier. This isolates the disputed precondition without changing the media identity or unrelated machine settings.
Profile and sample evidence
| Capture | Why it matters |
|---|---|
| Owning call | Record the API method, object identity, thread or callback and timestamp for the sdk buffertoosmall media-format check. |
| Values to record | requested byte count, returned required size, structure version, caller allocation size and whether the call was a size-probe or data call. |
| Object instance | Note when the reader, writer, graph, URL object, streaming session or metadata provider was created; stale state can reproduce it after configuration has changed. |
| Comparison case | Use one known-good resource that exercises the same sdk buffertoosmall media-format check while changing only the rejected precondition. |
Misleading actions
- guessing a larger buffer without honoring the size returned by the same API call.
- Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the sdk buffertoosmall media-format check.
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_LATE_PACKET | a network packet missed the useful playout or reordering window. |
NS_E_DUPLICATE_PACKET | the receiver recognized a packet sequence that had already been accepted. |
NS_E_INVALID_NUM_PASSES | the application used a preprocessing-pass sequence incompatible with the output mode. |
Technical references
- Windows Media Format SDK overview
- Input, stream and output formats
- Profiles
- Windows Media SDK objects
- Microsoft HRESULT registry
Retain the post-fix trace so a later pipeline result is not mistaken for recurrence of this failure.
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