What does HRESULT 0xC00D1B7D (NS_E_NOSTATSAVAILABLE) mean?

NS_E_NOSTATSAVAILABLE

How to interpret the code in a real encoding session

0xC00D1B7D is named NS_E_NOSTATSAVAILABLE. Its practical scope is request for a statistics producer that has not generated a current sample, which belongs to encoder statistics availability rather than to every part of Windows Media playback or Windows itself.

Mechanism and point of failure

Statistics objects are populated by active encoding, archival and indexing work. A valid statistics interface can therefore have no meaningful sample before the related subsystem starts or after it has already been torn down.

No statistics does not by itself mean that capture or encoding failed; it can indicate that the producer has not started or has no current sample. A typical reproduction is: IndexerStats is queried before an archive has stopped and entered background indexing. This makes the first result from the Encoder more valuable than a later generic message.

Minimal experiment

1. Record 0xC00D1B7D, the Encoder version and the exact API call or property access that returned it.
2. Export the current .wme or .prx configuration, then capture requested statistics interface, encoder and archive state, sample timestamp and indexing queue state.
3. Verify the encoder statistics availability precondition without changing the source, profile and output sink at the same time.
4. Run one controlled comparison that changes only the identified precondition: wait for the relevant producer to start or query statistics appropriate to the current state.

What to change—and what to leave alone

Do not use a missing early statistics sample as the sole reason to restart the session; correlate it with encoder and archive state.

Authoritative documentation

• IWMEncStatistics.IndexerStats.
• WMEncoder.Start.
• WMEncoder.File and archive output.
• Preparing a source group for encoding.