arozos-mirror/src/mod/media/transcoder/hwaccel_windows.go

//go:build windows
// +build windows

package transcoder

/*
	hwaccel_windows.go

	On Windows, ffmpeg's h264_nvenc (NVIDIA), h264_qsv (Intel Quick Sync) and
	h264_amf (AMD AMF) encoders all accept plain system-memory frames
	directly, so no explicit hardware device/frames-context setup is needed
	(unlike VAAPI on Linux). NVIDIA is tried first as the most broadly capable
	path, then Intel Quick Sync, then AMD as the fallback for machines with
	neither.
*/

func candidateHWProfiles() []*hwEncoderProfile {
	return []*hwEncoderProfile{
		{
			Name:        "NVIDIA NVENC",
			Codec:       "h264_nvenc",
			ScaleFilter: nv12ScaleFilter,
			EncodeArgs:  []string{"-preset", "fast"},
		},
		{
			Name:        "Intel Quick Sync (QSV)",
			Codec:       "h264_qsv",
			ScaleFilter: nv12ScaleFilter,
			EncodeArgs:  []string{"-preset", "fast"},
		},
		{
			Name:        "AMD AMF",
			Codec:       "h264_amf",
			ScaleFilter: nv12ScaleFilter,
			EncodeArgs:  []string{"-quality", "speed", "-usage", "transcoding"},
		},
	}
}