Black squeres after hevc_nvenc

[SlimRG]

Set more bitrate and lossless options for this coder
I have black squeres across video

[TNTwise]

Seems like an encoder issue, does CPU x265 work?

[SlimRG]

CPU works fine (no artifacts) but too slow
Nvidia RTX 4090 in loseless mode ffmpeg works fine too, but I see no loseless mode (-preset p7 -qp 0) in your app(

[SlimRG]

slow mode is DEPRECATED in ffmpeg as I understand... (use p5 (slow) or p7 (loseless) + -multipass 2)
-cq:v in some videos has bug in nvenc that needs -minrate to be set, or bitrate goes to 2M and this can cause artifacs

I'm not a guru of ffmeg, so maybe I made a mistake in my thinking...

[TNTwise]

Nvenc 265 slow works fine for me, but I will look into it on the Windows build.

[SlimRG]

I tried to upscale old serial Death Note :)
System Information:

OS: Windows 10 AMD64
CPU: Intel(R) Xeon(R) CPU E5-2696 v3 @ 2.30GHz
RAM: 447.90 GB
Available Disk Space: 1572.69GB

Software Information:

REAL Video Enhancer Version: 2.2.0
Available Backends: ['tensorrt', 'pytorch (cuda)', 'ncnn']
TensorRT Version: 10.6.0
PyTorch Version: 2.6.0.dev20241214+cu126
PyTorch GPU 0: NVIDIA GeForce RTX 4090
NCNN Version: 20220729
NCNN GPU 0: NVIDIA GeForce RTX 4090
Half precision support: True