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NS_E_INVALID_NUM_PASSES
Investigating NS_E_INVALID_NUM_PASSES without losing the first failure
This result (0xC00D0BD5) marks the application used a preprocessing-pass sequence incompatible with the output mode. The code belongs to the failing media-format operation, which is why a later network, codec or metadata error must be recorded separately instead of replacing it.
Windows Media Format separates the compressed stream profile from the raw input format and from the decoded output selected by a reader. The writer then packetizes samples, applies attributes and optional data-unit extensions, so failure at one boundary does not prove that the ASF container itself is unreadable for this diagnosis. In the case of this result, preserve the earliest lower-level result because wrappers can map several different causes to the same HRESULT before retrying.
Where the failure occurs
At that format stage, the component has already accepted the earlier prerequisites but cannot cross the boundary described as the application used a preprocessing-pass sequence incompatible with the output mode. That distinction matters: success in opening the file, resolving the host or creating a COM object does not prove that this later operation is valid when isolating this failure.
The strongest reproduction is run the exact pass sequence required by the output mode and compare it with the failing callback order at this checkpoint. If the same call advances after that single change, the evidence supports this boundary. If it does not, return to the first nested error rather than widening the repair.
How to read the next HRESULT
| Retest result | Interpretation |
|---|---|
| The identical call still returns the code | The values governing the reported boundary are unchanged, or the caller is still using an older object generation. |
| A fresh object succeeds | Lifetime or cached state contributed to this result; correct object recreation instead of applying a machine-wide workaround before retrying. |
| The call advances to another HRESULT | the format operation boundary was cleared. Diagnose the new code at its own format, graph, URL, network or metadata stage when isolating this failure. |
| Only one resource fails | The evidence favors content, URL, publishing point, stream, attribute or object-specific state rather than a global outage at this checkpoint. |
Profile and sample evidence
| Capture | Why it matters |
|---|---|
| Owning call | Record the API method, object identity, thread or callback and timestamp for the original request. |
| Decisive values | Source time range, pass number, preprocessing state, EDL entries in source order and the output mode selected for the stream. |
| Object generation | Note when the reader, writer, graph, URL object, streaming session or metadata provider was created; stale state can reproduce this result after configuration has changed. |
| First nested result | Keep the earliest codec, COM, socket, DNS, parser or provider status before it; later UI messages are less specific. |
| Comparison case | Use one known-good resource that exercises the same media-format check while changing only the rejected precondition. |
A controlled media-format test
- Log
0xC00D0BD5, it, the exact operation and the first failure time when isolating this failure. - Preserve source time range, pass number, preprocessing state, EDL entries in source order and the output mode selected for the stream at this checkpoint.
- Do not reuse a graph, session, reader or metadata object created before the relevant configuration or resource changed.
- Perform one isolated test: run the exact pass sequence required by the output mode and compare it with the failing callback order.
- 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 recorded format state is fixed.
- Confirm the expected next state and retain any new HRESULT as a separate downstream result before retrying.
Nearby results are not interchangeable
Main distinction: It belongs to format, profile or sample processing, not merely to file-name or network resolution in the diagnostic record.
| Nearby HRESULT | How to compare it |
|---|---|
NS_E_DUPLICATE_PACKET | the receiver recognized a packet sequence that had already been accepted |
NS_E_SDK_BUFFERTOOSMALL | the caller-provided output buffer is smaller than the size reported by the SDK |
NS_E_ATTRIBUTE_READ_ONLY | the caller attempted to modify an attribute whose value is owned or computed by the SDK |
Misleading actions
- Changing several profile and codec settings at once, which hides the first incompatible field.
- Do not erase the first occurrence by repeatedly retrying; callbacks and reconnects can replace the useful state with a later wrapper error for this diagnosis.
- Do not publish credentials, protected-content material or complete private URLs before retrying. Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the original boundary.
Technical references
- Windows Media Format SDK overview
- Input, stream and output formats
- Profiles
- Windows Media SDK objects
- Microsoft HRESULT registry
Close the incident only after the original the operation succeeds on a current object and the expected next state is observed when isolating this failure.
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