add ur music and a pic then press play

waveform is where u change the size, thickness, color and shadow. photo has the borders, darkener and other effects

pick 30, 60 or 90 sec and ur fps in export. fast doesn't play the whole song first, it just renders it. how fast it is depends on ur device

if the song is too short it loops. u can cancel whenever. if fast doesn't work try real time

u can save as mp4, webm or just a png. ur files stay on ur device