A music video is a stack of shots
Nobody generates three minutes in one go. Describe one shot, generate it, then move to the next. That is how the format is made anyway.
Match the cut to the tempo
Fast tracks want four second shots. Slow tracks hold eight. Generate at the length you will actually use and you waste fewer credits.
Bring your own track or make one
If you have the song, cut to it. If you do not, the music generator writes a bed you own outright.
FAQ
Can it generate the song too?
Not on this page. Use the AI music generator, then cut your shots against it.
How long can one shot be?
Four to eight seconds. Feeds and music videos both reward short cuts.
Is there sound?
Seedance generates native audio. For a music video you will usually mute it and use your track.