What does HRESULT 0xC00D1BB9 (NS_E_AUDIO_BITRATE_STEPDOWN) mean?

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The audio bit rate for an audience with a higher total bit rate must be greater than one with a lower total bit rate.%0

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NS_E_MULTIPLE_AUDIO_FORMATS	NS_E_INVALID_AUDIO_PEAKRATE

NS_E_AUDIO_BITRATE_STEPDOWN

The audio bitrate ladder steps down

NS_E_AUDIO_BITRATE_STEPDOWN (0xC00D1BB9) is a relationship error across audiences. As total audience bandwidth increases, the profile unexpectedly assigns less bitrate to audio. Each audio value may be supported individually, but the multi-bitrate progression is inconsistent.

Compare adjacent audiences

Sort audiences by total bitrate and record audio and video allocation for each. Locate the first pair where total rate rises but audio rate falls, and verify that audience indexes have not been reordered by profile editing.

Correction

Adjust the audience allocations to the intended nondecreasing audio ladder and validate again. Do not change source audio format or codec unless a later, codec-specific HRESULT indicates that those are also invalid.

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