custom_nodes/ComfyUI-VideoHelperSuite/video_formats/nvenc_h264-mp4.json

{
    "main_pass":
    [
        "-n", "-c:v", "h264_nvenc",
        "-pix_fmt", ["pix_fmt", ["yuv420p", "yuv420p10le"]]
    ],
    "audio_pass": ["-c:a", "aac"],
    "bitrate": ["bitrate","INT", {"default": 10, "min": 1, "max": 999, "step": 1 }],
    "megabit": ["megabit","BOOLEAN", {"default": true}],
    "save_metadata": ["save_metadata", "BOOLEAN", {"default": true}],
    "extension": "mp4"
}