What does HRESULT 0xC00D1BDB (NS_E_INVALID_INTERLACEMODE) mean?

NS_E_INVALID_INTERLACEMODE

The codec rejects the requested interlace mode

NS_E_INVALID_INTERLACEMODE (0xC00D1BDB) is raised while the encoder validates how interlaced source material should be represented in the output. The selected codec or codec mode cannot honor the requested preserve/deinterlace setting. This is a profile-capability mismatch, not evidence that the capture device or source frames are damaged.

What to compare

• Record source scan type and the exact interlace flag requested by the profile.
• Capture codec name/version, output frame size, and whether preprocessing changes the scan mode before encoding.
• Compare the same source with interlace preservation disabled; this isolates codec capability from input acquisition.

Correction

Select an interlace mode supported by the chosen codec, or choose a codec that supports the required treatment. Keep bitrate and frame size fixed during the retest so a different profile constraint does not obscure the result.

Technical references

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