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NS_E_END_OF_PLAYLIST
What NS_E_END_OF_PLAYLIST means at its owning API
When this result (0xC00D32C8) appears, the first blocked transition is playlist enumeration has reached the terminal position rather than failing to open media. In practice, the end of playlist metadata check must be reconstructed from the same URL, stream, object generation and call sequence.
Windows Media metadata can be file-level or stream-level and can come from an ASF header, computed attributes, an online/cache provider or a format-specific metadata handler. Read capability, edit capability, locale and query schema are independent properties. In the case of this result, preserve the earliest lower-level result because wrappers can map several different causes to the same HRESULT.
Read-only metadata experiment
- Log
0xC00D32C8, this result, the exact operation and the first failure time. - Preserve file or content identifier, metadata provider, stream number, attribute name and type, locale, read/edit capability and the first metadata API result.
- Do not reuse a graph, session, reader or metadata object created before the relevant configuration or resource changed.
- Perform one isolated test: reset playlist enumeration to the first entry and repeat the read without treating normal end-of-sequence as an open failure.
- 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 end of playlist metadata check is fixed.
- Confirm the expected next state and retain any new HRESULT as a separate downstream result.
What completed, and what did not
Before the end of playlist metadata check, earlier setup may have succeeded, but playlist enumeration has reached the terminal position rather than failing to open media was not completed. This is why logs should preserve both the last successful call and this result.
The targeted comparison is reset playlist enumeration to the first entry and repeat the read without treating normal end-of-sequence as an open failure. It changes the disputed precondition without changing the media identity or unrelated machine settings.
Attribute, schema and locale evidence
| Capture | Why it matters |
|---|---|
| Owning call | Record the API method, object identity, thread or callback and timestamp for the end of playlist metadata check. |
| Decisive values | file or content identifier, metadata provider, stream number, attribute name and type, locale, read/edit capability and the first metadata API result. |
| Object generation | Note when the reader, writer, graph, URL object, streaming session or metadata provider was created; stale state can reproduce it 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 the end of playlist metadata check while changing only the rejected precondition. |
Interpret the provider response
| Retest result | Interpretation |
|---|---|
| The identical call still returns the code | The values governing the end of playlist metadata check are unchanged, or the caller is still using an older object generation. |
| A fresh object succeeds | Lifetime or cached state contributed to it; correct object recreation instead of applying a machine-wide workaround. |
| The call advances to another HRESULT | the end of playlist metadata check boundary was cleared. Diagnose the new code at its own format, graph, URL, network or metadata stage. |
| Only one resource fails | The evidence favors content, URL, publishing point, stream, attribute or object-specific state rather than a global outage. |
Misleading actions
- deleting metadata caches or tags before preserving the provider, attribute key, type and locale that produced the result.
- Do not erase the first occurrence by repeatedly retrying; callbacks and reconnects can replace the useful state with a later wrapper error.
- Do not publish credentials, protected-content material or complete private URLs. Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the end of playlist metadata check.
Nearby results are not interchangeable
Main distinction: metadata lookup, schema validation and edit capability are separate checkpoints even when the same attribute is involved.
| Nearby HRESULT | How to compare it |
|---|---|
NS_E_USE_FILE_SOURCE | Compare the owning API and first rejected value; it belongs to a neighboring checkpoint, not automatically to the same cause as it. |
NS_E_PROPERTY_NOT_FOUND | Use object state and operation order to decide which code is authoritative when both appear in one trace. |
NS_E_PROPERTY_READ_ONLY | Retain it separately if it appears only after the condition has cleared. |
Technical references
- Windows Media metadata features
- Retrieving metadata attributes
- Setting metadata attributes
- Metadata editor object
- Microsoft HRESULT registry
Retain the post-fix trace so a later pipeline result is not mistaken for recurrence of this boundary.
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