What does HRESULT 0xC00D1BC8 (NS_E_INVALID_VIDEO_CQUALITY) mean?

NS_E_INVALID_VIDEO_CQUALITY

Diagnostic meaning beyond the standard text

For NS_E_INVALID_VIDEO_CQUALITY (0xC00D1BC8), the actionable event is codec quality control is outside the supported range.

Why the session can reach this point

The video profile selects a codec and rate-control mode, then supplies bitrate, peak rate, frame rate, frame size, key-frame spacing, quality, buffer and optional interlace or pixel-aspect settings. The codec validates both values and combinations.

A source preview does not prove that the output profile is accepted; output dimensions and rate-control settings are validated by the selected encoder codec. One concrete way to reach the condition is that a negative sentinel is serialized as a large unsigned value.

Decision path

1. Record 0xC00D1BC8, the Encoder version and the exact API call or property access that returned it.
2. Export the current .wme or .prx configuration, then capture codec-quality value, codec identity and profile mode.
3. Verify the video 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 valid codec quality value or let the codec default it.

Codes with similar symptoms but different owners

Safe recovery

Set a valid codec quality value or let the codec default it.

Do not rely on the UI label alone; record the numeric profile fields and codec identity before changing presets.

Discriminating evidence: Capture the configured codec-quality value and the encoder API that rejected it. Validate that value independently of key-frame interval and buffer size; those settings can be valid while the codec-quality control is outside its permitted range.

Source material

• Selecting a video codec for an audience.
• IWMEncProfile2.VBRMode.
• IWMEncVideoSource2.Width and live capture sizing.
• Non-square pixel mode in an encoder profile.