What does HRESULT 0xC00D1BBC (NS_E_INVALID_AUDIO_BUFFERMAX) mean?

NS_E_INVALID_AUDIO_BUFFERMAX

Diagnostic meaning beyond the standard text

For NS_E_INVALID_AUDIO_BUFFERMAX (0xC00D1BBC), the actionable event is maximum audio buffer setting is outside the accepted range or unit.

Why the session can reach this point

The audio part of an encoder profile combines source format, codec, bitrate mode, average and peak rates, buffer limits and channel layout. Multiple audiences impose cross-audience consistency rules in addition to per-field ranges.

A codec can be installed and still reject the selected format or bitrate combination; codec presence and profile validity are different tests. One concrete way to reach the condition is that milliseconds are supplied to a field populated from bytes in a custom profile tool.

Decision path

1. Record 0xC00D1BBC, the Encoder version and the exact API call or property access that returned it.
2. Export the current .wme or .prx configuration, then capture audio buffer value, units, codec and audience bitrate.
3. Verify the audio stream and audience settings precondition without changing the source, profile and output sink at the same time.
4. Run one controlled comparison that changes only the identified precondition: set a supported buffer duration/size using the API's expected units.

Codes with similar symptoms but different owners

Safe recovery

Set a supported buffer duration/size using the API's expected units.

Do not substitute a different codec before saving the exact profile values rejected by validation; otherwise the incompatible combination cannot be identified.

Source material

• WAVEFORMATEX structure.
• IWMEncProfile2.VBRMode.
• Adding an audience to an encoder profile.
• Choosing an encoding method.