Add music to your video with AI. Composed for the mood you describe.

DFIRST Music for video is an AI tool that adds music to a video. Upload an MP4, MOV or WebM of up to 150 MB, describe the mood and choose 5, 15 or 30 seconds of music. It composes an instrumental track and mixes it quietly under your film, repeating it until the picture ends.

  • Your video keeps its own sound
  • The music repeats to the end
  • Instrumental, no vocals
Music for videoYour draft stays on this device

01Your video

03Music length in seconds
Try an example
Score video

Join the waitlist to finish. Your draft stays on this device, and Music for video opens with it as soon as your access starts.

How to add music to a video with DFIRST.

Three steps. The first one starts on this page.

  1. 01

    Add the video and the mood

    Starts on this page

    Drop your film in the box above, describe the music you want and choose 5, 15 or 30 seconds of it. A short track suits a short clip; 30 seconds gives a longer film more variety.

  2. 02

    DFIRST composes and mixes

    DFIRST does the work

    ElevenLabs Music v2.5 composes an instrumental track from your words. It is then laid under the film at a quarter of full volume and repeated until the picture ends.

  3. 03

    Get the film with music

    Ready for you

    You get one MP4 with the music under it, saved to your session and your Data Room. Generate again for a different take, or try another mood on the same video.

Made for brands. Not a blank prompt box.

Keeps what is already there

The film's own sound is not removed. Dialogue, ambience and product sound stay at full level and the music sits underneath, which is what most product clips and interviews need.

Music for any length of film

A short track repeats until the film ends, so even a 5-second piece covers a longer clip. For films longer than a few seconds, choose 30 seconds so the repeat is less noticeable.

When you need more than music

For effects that follow each cut and a voice-over as well, use Add sound to video. It replaces the sound and puts every layer on its own track, which you can adjust after the film is ready.

Who uses it.

Social teams

A music bed for product clips, reels and stories that were filmed without one.

E-commerce teams

Music under product demos and listing videos, while the product's own sound stays.

Founders and small teams

A clip that sounds finished for a launch post, without opening editing software.

Agencies

A quick music pass on a rough cut, so the client reviews the film with a mood, not in silence.

At a glance.

The facts about Music for video, as it works in DFIRST today.

Input
One video (MP4, MOV or WebM, up to 150 MB) and a description of the mood
Music length
5, 15 or 30 seconds (5 by default), repeated until the film ends
Mix
Music at a quarter of full volume, under the video's own sound
You get
The same video with music under it, as an MP4
Model
ElevenLabs Music v2.5, instrumental
Where it goes
Your session and your Data Room

Questions people ask.

About Music for video and how it fits the rest of DFIRST.

How do I add music to a video with AI?

Upload the video in the box at the top of this page, describe the mood and choose a music length, then continue in DFIRST. It composes an instrumental track and mixes it under your film, so you get the same video back with music.

Does it remove the sound already in my video?

No. The original sound stays at full level and the music is mixed under it at a quarter of full volume. If you want the original sound replaced, Add sound to video does that, with effects, music and a voice-over.

What if my video is longer than the music?

The music repeats until the film ends. A 5-second piece under a long video can sound repetitive, so choose 30 seconds for anything longer than a short clip, and generate again if the loop point stands out.

Can I change the volume of the music?

Not in this tool: the music always sits at a quarter of full volume. For music you can raise, lower or switch off after the film is ready, use Add sound to video, where every layer is its own track.

Can I get the music without the video?

Use Create music for a track on its own, in 5, 15, 30 or 60 seconds, and download it as an MP3. It uses the same instrumental music model, without the mix, so you can place the track in your own editor.

All 55 tools

Start it here. Finish it in DFIRST.

Your music for video draft waits on this device until your access starts. DFIRST opens to people on the waitlist first.

Updated