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NS_E_VIDEO_BITRATE_STEPDOWN
Audience ordering and video bitrate contradict each other
NS_E_VIDEO_BITRATE_STEPDOWN (0xC00D1BC0) is a cross-audience consistency error in a multiple-bit-rate profile. As total audience bandwidth rises, the video allocation unexpectedly decreases. Each individual bitrate may be legal, but the audience ladder is not.
Inspect the complete ladder
List audiences in increasing total bitrate and record audio bitrate, video bitrate, and any fixed overhead for each one. Identify the first adjacent pair where total bandwidth increases while video bitrate falls.
Repair the ladder, not the source
Adjust audience allocations so the intended progression is internally consistent, then validate the profile without changing source media or codecs. This HRESULT is about relationships between audiences; capture-device troubleshooting is unrelated.
Technical references
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