HRESULT 0xC00D0BD5 (NS_E_INVALID_NUM_PASSES): meaning and diagnosis

Status / error code:

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Constant name:

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Operating System:

Description:

The wrong number of preprocessing passes was used for the stream's output type

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NS_E_SDK_BUFFERTOOSMALL	NS_E_ATTRIBUTE_READ_ONLY

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.

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.

For the strongest reproduction, run the exact pass sequence required by the output mode and compare it with the failing callback order. If the same call gets past this point after that single change, the changed precondition is relevant. If it does not, return to the first nested error instead of broadening the repair.

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.
Values to record	Source time range, pass number, preprocessing state, EDL entries in source order and the output mode selected for the stream.
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, the exact operation and the first failure time.
Preserve source time range, pass number, preprocessing state, EDL entries in source order and the output mode selected for the stream.
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.

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 publish credentials, protected-content material or complete private URLs before retrying. Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the original condition.

Technical references

Close the incident only after the original operation succeeds on a current object and the expected next state is observed.

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