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VFW_S_SOME_DATA_IGNORED
DirectShow ignored nonessential persisted settings
VFW_S_SOME_DATA_IGNORED is HRESULT 262725 (0x00040245) from Video for Windows. AllStat describes this result as “The file contained some property settings that were not used.” The high-order severity bit is clear, so this is a success result, but it carries more information than plain S_OK.
The media file or persistent graph was processed, but some property settings were not used.
Evidence and telemetry to preserve
- preserve source file hash and format version.
- preserve ignored property identifiers.
- preserve filter versions and CLSIDs.
- preserve graph topology after load.
- preserve comparison with the graph that created the file.
Also record vfw_s_some_data_ignored_operation, vfw_s_some_data_ignored_object, vfw_s_some_data_ignored_state_before, vfw_s_some_data_ignored_state_after, UTC time, process and thread identifiers, and a correlation ID. Keep secrets out of logs while retaining GUIDs, CLSIDs, media subtypes, property IDs, row identities, and hashes needed to distinguish objects.
Where the result is encountered
- This result can appear in loading persisted filter graphs; record the producing interface and method rather than inferring behavior from the symbolic name alone.
- This result can appear in reading media-file metadata or filter properties; record the producing interface and method rather than inferring behavior from the symbolic name alone.
- It can appear in version differences between saved graph data and installed filters; record the producing interface and method rather than inferring behavior from the symbolic name alone.
The same numeric success value can be mishandled when a wrapper exposes only a Boolean. Keep the original HRESULT until the code-specific outputs and state transition have been evaluated.
State boundary that must be proved
The central question for it is whether ignored settings do not alter a required connection, security decision, or user-visible behavior without notice. The HRESULT alone confirms neither unrelated work nor the quality of optional outputs.
A reliable interpretation of it names the exact method contract, the object generation, and the outputs that remain valid. This prevents a success-with-information result from being promoted to full success or demoted to a generic error.
Diagnostic sequence
- capture the raw HRESULT
0x00040245immediately after the returning method and record whether the caller usedSUCCEEDED,FAILED, equality testing, or exception translation. - Identify the exact owner of it: interface, method, object instance, provider or filter version, thread or apartment, and operation phase.
- Validate the decisive contract boundary for it: ignored settings do not alter a required connection, security decision, or user-visible behavior without notice.
- inspect every output parameter, count, status array, returned interface, or side effect that the method documentation associates with this success-with-information result.
- Compare the observed state before and after it; do not assume that a success severity bit means every optional sub-operation completed.
- reproduce the smallest request with the same object state and then change only the condition identified by the evidence before repeating the operation.
Difference from nearby HRESULT values
VFW_S_MEDIA_TYPE_IGNORED concerns a saved connection media type replaced by negotiation; it covers other unused property settings.
This distinction determines whether the caller should consume partial outputs, stop iteration, wait, reconfigure, notify the user, or perform no error recovery at all.
Correct handling, retry, and recovery
Continue when ignored settings are optional, but expose the loss when they affect output quality or behavior. Avoid rewriting the source until compatibility has been verified.
Retry it only when the recorded state can change the documented outcome. Repeating the same call is inappropriate for a stable end marker, cancellation, unsupported format, adjusted property, or partial result whose completed side effects have not been reconciled.
Practical validation scenario
A graph saved by an older application includes a property no longer supported by a replacement filter. Playback succeeds, the loader records the ignored property, and a compatibility test confirms output remains acceptable.
The negative test should preserve the condition that produces it; the recovery test should alter only that condition and verify the final state as well as the HRESULT.
Developer and administrator guidance
When it crosses process, RPC, scripting, or managed-code boundaries, preserve the unsigned 32-bit value and symbolic name. A signed decimal rendering can obscure that the severity bit indicates success and can lead to incorrect exception or retry behavior.
A support report for it should include decimal 262725, hexadecimal 0x00040245, the AllStat meaning, the owning API, and the first detailed status or output that explains why the method did not return ordinary S_OK.
References
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