What does HRESULT 0xC00D1BB7 (NS_E_MULTIPLE_AUDIO_CODECS) mean?

NS_E_MULTIPLE_AUDIO_CODECS

All audiences must agree on the audio codec

NS_E_MULTIPLE_AUDIO_CODECS (0xC00D1BB7) is a profile-validation result: different audiences select different audio codecs for the same encoding profile even though Windows Media Encoder requires a common audio codec across those audiences.

What to compare

For every audience, record the audio source index, codec identity, format index, channel count, sample rate, and bitrate. The codec identity is the decisive field for this HRESULT; bitrate or format differences can be legal in situations where changing the codec family is not.

Targeted correction

Select the same audio codec for all audiences, then validate the profile again before starting capture. Keep the video settings unchanged during this test. If the next validation result concerns bitrate, language, or source topology, treat it as a separate constraint rather than broadening the fix to the entire profile.

Technical references

• Adding an audience to an encoder profile.
• IWMEncAudienceObj.TotalBitrate.
• Retrieving the profile assigned to a source group.
• Detecting profile compatibility.