Export audio as MP4 video with visualizer
taskId — use Get Task Status to poll for the MP4 download URL.Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
The clip_id which used to generate the music audio continued from existing audio.
task id. Use this id to query task status.
"15c257ff-43f7-4678-bd41-202ad6b8488b"