[BUG]: The encoder sometimes chooses the wrong minimum level and causes a parameter exception

[doctorpangloss]

Package version

3.0.0-pre.4

Environment

* OS: Windows 2022
* Unity version: 2021 LTS

Steps To Reproduce

1. Request a 1688x614 frame, frame rate 60, max bit rate 24000000, target bps 4925000
2. Observe the level computing code incorrectly computes Level 4 for this request.
3. Observe it should be at least 4.2.
4. Observe an exception.
5. m_level = std::max(m_level, NV_ENC_LEVEL_H264_42); resolves the issue.

Windows 2022 LTSC + DirectX 11 + NVEnc streaming to Windows Chrome: Works Windows 2022 LTSC + DirectX 11 + NVEnc streaming to Mobile Safari, Portrait: Works Windows 2022 LTSC + DirectX 11 + libvpx streaming to Mobile Safari, Portrait: Works Windows 2022 LTSC + DirectX 11 + libvpx streaming to Mobile Safari, Landscape: Works Windows 2022 LTSC + DirectX 11 + NVEnc streaming to Mobile Safari, Landscape: Does not work (see parameters to repro)

Current Behavior

An invalid parameter exception thrown by m_encoder->CreateEncoder(&m_initializeParams);

Expected Behavior

Select Profile 4.2 instead of 4.

Anything else?

The workaround is to always set the level to at least 4.2.

[kannan-xiao4]

@doctorpangloss Thank you for reporting. We investigate this issue. memo: WRS-467

Can you tell me in which environment it occurs and in which environment there is no problem?

[doctorpangloss]

Windows 2022 LTSC + DirectX 11 + NVEnc streaming to Chrome: Works Windows 2022 LTSC + DirectX 11 + NVEnc streaming to Mobile Safari, Portrait: Works Windows 2022 LTSC + DirectX 11 + libvpx streaming to Mobile Safari, Portrait: Works Windows 2022 LTSC + DirectX 11 + libvpx streaming to Mobile Safari, Landscape: Works Windows 2022 LTSC + DirectX 11 + NVEnc streaming to Mobile Safari, Landscape: Does not work (see parameters to repro)

When using the particular parameters I wrote there, it should reproduce without needing to go through this whole rigamarole.

[kannan-xiao4]

@doctorpangloss Thanks about detail.