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VFW_E_DVD_STATE_CORRUPT
Exact result and bit fields
VFW_E_DVD_STATE_CORRUPT has the unsigned HRESULT value 2147746437 (0x80040285) and the signed 32-bit representation -2147220859. AllStat describes it as “The state data was corrupt”. In the operation that produces this result, saved DVD state cannot be restored because the bookmark data is internally corrupt.
The high bit is set, so this value is a failure HRESULT. Its facility field is 4 (FACILITY_ITF) and its low code is 645 (0x0285). These fields classify this result, but they do not identify which filter, thread, device, file or graph generation returned it.
Contract boundary
This result belongs to the legacy DirectShow DVD Navigator contract. DVD state is authored and stateful: domains, user-operation controls, titles, menus, streams, command objects and graph construction each impose different preconditions.
The practical owner to locate for this HRESULT is the DVD Navigator, graph builder, decoder inventory and renderer topology. When handling this result, capture the native result before a wrapper replaces it with a generic exception, and keep the graph generation or object identity with the record.
Step-by-step diagnosis
- Capture it at the first native return, not only at the top-level playback failure.
- identify the exact graph stage described here: saved DVD state cannot be restored because the bookmark data is internally corrupt.
- compare the live object state, topology and input with the documented interface preconditions.
- Before changing filters, drivers, registry data or media for this HRESULT, collect the code-specific evidence below.
- Test one evidence-backed the correction on the smallest reproducible graph.
- Verify that the corrected run no longer returns it and does not merely replace it with a nearby HRESULT.
Conditions that can produce it
- Cause 1 for this HRESULT: the serialized state was truncated.
- Cause 2 for this HRESULT: storage or transport changed opaque bytes.
- Cause 3 for this HRESULT: application code persisted an invalid interface-derived representation.
Evidence worth preserving
Log the interface and method, filter CLSID and friendly name, process and thread, graph state, connected pin names, media-type summary, renderer or device identity where relevant, and the first preceding HRESULT. Record lengths and hashes instead of raw content when the incident includes disc identifiers, navigation state, parental settings and media paths.
- Evidence 1 for this HRESULT: blob length, checksum and storage history.
- Evidence 2 for this HRESULT: restore call and current disc identity.
- Evidence 3 for this HRESULT: producer version and evidence of partial writes.
Correction strategy
- Action 1 for this HRESULT: discard the damaged bookmark.
- Action 2 for this HRESULT: store opaque state atomically with integrity metadata.
- Action 3 for this HRESULT: avoid converting the state through text or architecture-dependent structures.
Retry and recovery
Retry rule for this HRESULT: Do not retry the same corrupt state; resume from a known navigation point or create a fresh bookmark. A safe it retry must use a changed capability, state, object generation or input. While recovering from it, preserve cancellation and avoid replaying side effects when the original operation may have partially completed.
How it differs from nearby results
VFW_E_DVD_STATE_WRONG_VERSION rejects a recognizable but unsupported revision; it rejects damaged state content. Keep those cases separate in telemetry, UI messages and retry policy because their next actions are different.
Example incident
A crash leaves a partially written bookmark file that still has the expected name; atomic replacement prevents later it. This example keeps the diagnosis at the specific the boundary instead of treating every DirectShow failure as a codec reinstall problem.
Implementation notes
Code that handles it should preserve the original HRESULT, the failed stage and an opaque correlation identifier. After it, do not infer success from partial graph construction, and do not continue using interfaces retained from a graph or device generation that has already changed.
Operational remediation for this HRESULT should favor supported component installation, device configuration and documented DirectShow calls. Manual registry or driver changes are appropriate only when the collected evidence for this HRESULT points to that layer and a rollback is available.
Official Microsoft references
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