Interlaced H.264 1080p 59.97fps Encoding Fails on Blackwell GPU

Gaming and Visualization Technologies Video Processing & Optical Flow
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I’m encountering an issue when encoding a 1920x1080 8-bit video as interlaced using NVENC on a Blackwell GPU.

Encoding works without any problems at 29.94fps, but when I switch to 59.97fps, the encoder fails to initialize and throws the following error:

nvEncInitializeEncoder returned error (NV_ENC_ERR_INVALID_PARAM): Invalid Level

I’ve tried adjusting the Level parameter to various valid values (including auto and explicit values like 4.1, 4.2, 5.0, etc.), but the same error persists regardless of the setting.

My environment details are as follows:

  • Driver version: 575.51.03
  • CUDA version: 12.9
  • SDK version: 13.0
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solved

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