shortGPT/editing_framework/editing_steps/background_music.json

{
	"background_music": {
		"inputs": {
			"parameters": ["url", "volume_percentage"],
			"actions":["loop_background_music"]
		},
		"type": "audio",
		"z": -1,
		"parameters": {
			"url": null
		},
		"actions": [
			{
				"type": "loop_background_music",
				"param": {
					"duration": null
				}
			},
			{
				"type":"normalize_audio",
				"param":{}
			},
			{
				"type": "volume_percentage",
				"param": null
			}
		]
	}
}