What does HRESULT 0x00040245 (VFW_S_SOME_DATA_IGNORED) mean?

VFW_S_SOME_DATA_IGNORED

DirectShow ignored nonessential persisted settings

VFW_S_SOME_DATA_IGNORED is HRESULT 262725 (0x00040245) from Video for Windows. The documented description is “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 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.

Where the result is encountered

• This result can appear in loading persisted filter graphs; record the producing interface and method.
• This result can appear in reading media-file metadata or filter properties; record the producing interface and method.
• It can appear in version differences between saved graph data and installed filters; record the producing interface and method.

State to verify

The central question is whether ignored settings do not alter a required connection, security decision, or user-visible behavior without notice.

Diagnostic sequence

• Capture the raw HRESULT 0x00040245 immediately after the returning method and record whether the caller used SUCCEEDED, FAILED, equality testing, or exception translation.

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.

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.

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.

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.

References

• Microsoft: DirectShow error and success codes
• Microsoft: DirectShow overview