I want to use a visualizer I already made as the background of my new visualizer project.
Yes! You can upload an already rendered visualizer inside another visualizer in order to produce videos that go beyond what a single template offers. For best results, use the same song as the basis for both visualizers.
For a more detailed answer, check out how to Make one epic video with multiple visualizers.
For a more detailed answer, check out how to Make one epic video with multiple visualizers.