Can AI write music for your video, and which video to music tool fits?

You have a 47-second clip of a ferry crossing. At 0:12 the gangway drops, at 0:31 a flock of gulls lifts off the rail, and at 0:40 the far shore fills the frame. You want the music quiet at the start, moving by the gangway, wide open by the gulls, and gone by the end. Two routes get you there. You can hand the clip itself to a tool that looks at the footage and composes from it, or you can describe the clip in words to a music generator and cut the result to fit.

So yes, AI can write music for your video, and at the time of writing several products take the video file as the input. What they mean by "watching" the video matters more than the demo, though, and the licence attached to the result matters more than either. Below: the tools that actually accept a video, what each one returns, where each one stops, the do-it-yourself route for when you need control, and a three-cut test that tells you in ten minutes whether a tool is good enough for your edit.

Two directions that share one search

"Video to music" gets typed by two different people. One has footage and needs a soundtrack. The other has a song and needs pictures. This page is for the first person. If you already have a finished track and want a clip made for it, the tools are different (Freebeat's music video mode, Neural Frames, Kaiber), and we compared them in which AI music video generator is worth paying for. Picture first, music second: stay here. Music first, picture second: go there.

One more disclosure before the tools. sunomarket is an independent site. We are not affiliated with Adobe, ElevenLabs, Freebeat, Suno or anyone else named below, and nothing here is sponsored. What we sell (a lyric generator, a Suno prompt generator, a style catalogue) comes in only at the step where it honestly fits, and for a purely instrumental bed it mostly does not.

The tools that take the video itself

Four products, checked on their own pages. Features and limits change fast in this category, so treat every row as "at the time of writing" and confirm on the vendor's site before you build a workflow around it.

A few things in that table deserve a second look.

Firefly defaults to your clip's exact length. Adobe's help page says the generated music matches the duration of the uploaded video unless you change it, and you preview all four variations playing against the picture. For a silent product clip or an explainer under five minutes, that is the shortest path from footage to a usable bed. The catch is in the same help page: prompts are English only. And the vibe and style tags are separate groups, so nothing stops you pairing a calm vibe with a loud style; listen to all four variations before you trust the blend.

ElevenLabs reads the picture and ignores the sound. The page says it analyses motion, colour, pacing and scene structure from the visual frames, so a clip with a voiceover or ambient audio gets scored as if it were silent. That is useful when the existing audio is rough. It also means the tool cannot shape itself around your narrator, because it never heard the narrator. The terms are the part to read slowly: on the free plan you cannot download what you make, and on paid plans film, TV, radio and studio games sit outside the commercial permission.

Freebeat is a video company first. The video-to-music page sits inside a suite of music-video tools. If you also plan to make the visuals there, keeping both steps in one account is the honest advantage. The ownership claim on the page is Freebeat's claim; it is not the same thing as a court or a copyright office agreeing with it (more on that below).

Suno Scenes is a toy in the good sense. It turns a moment from your camera roll into a short song. It is not trying to land a swell on 0:31. Suno launched it on iOS first, so check that it is in your version of the app before you plan around it.

What "it watches your video" really means

None of these tools receives your edit decision list. They infer mood from colour, energy from motion and pacing from how often the shot changes. Freebeat sells its tool as one that scores your footage; Adobe and ElevenLabs talk about matching tone, vibe and pacing. That is a different promise from "the cymbal hits on frame 744".

We cannot hear what any of these tools return for your footage, and neither can a review written by someone else. What you can do is test the one thing that matters for your edit: whether the music changes where the picture changes. That test is at the end of this page. Run it before you pay for anything.

Two practical consequences follow from the inference approach:

• Cut-heavy clips read as high energy. A travel montage with a cut every second will pull these tools toward something fast, even if you wanted a slow, warm feel. Override the suggested prompt instead of accepting it.
• Long takes read as calm. A single 40-second shot of a kitchen will lean ambient, even if the scene is a tense argument. The tool sees a still frame, not the subtext.

Route two: generate to the clip yourself

When you need the swell exactly on the gulls, or you want the same sound across a whole series of videos, describing the clip in words often beats uploading it. You lose the automatic analysis and gain control over structure. In Suno that control lives in two fields: Style, which sets the sound, and Lyrics, where section tags set the order of events. For an instrumental, the Lyrics field holds only bracketed directions, so nothing gets sung (our piece on making an instrumental in Suno covers the surprise-voice problem in detail).

Here is the ferry clip translated into a prompt:

Style:
cinematic folk, fingerpicked acoustic guitar, warm cello,
soft brushed drums, slow build, hopeful, airy mix, instrumental

Exclude:
vocals, choir, spoken word

Lyrics:
[Intro | solo fingerpicked guitar | quiet, close]
[Build | cello enters | brushed drums | rising]
[Lift | full band | wide strings | bright and open]
[Outro | guitar alone | fade out]

And the plan for fitting it to the picture:

Three honest notes on this route.

First, Suno has no field for a duration in seconds, and a tempo number typed into the prompt is unreliable. Tempo is steered with words (slow build, driving, laid back); our guide on controlling tempo in Suno has the vocabulary. Length is handled in the editor, not in the prompt.

Second, the sections will not land on your timestamps by themselves. What you do is generate a track somewhat longer than the clip, drop it on the timeline, slide it until the start of the Lift sits on 0:31, then trim the head and fade the tail. Editors have always cut music this way. The tags give you a track that has a clear lift somewhere; your mouse puts it in the right place.

Third, you will usually run it more than once. Each generation returns a different take, and the one with the cleanest jump from Build to Lift is the one worth cutting. If you need words for a sound you cannot name, the style catalogue lists nearly 2,000 styles as Suno prompts, with the ten most popular free to read in full.

When the video needs a song, not a bed

Everything above assumes background music. Some videos want a sung chorus: a wedding highlight reel, a birthday montage, a travel recap where the hook line is the name of the town. That changes the tool list fast. Firefly does not do vocals at all. ElevenLabs' and Freebeat's video pages do not say. Suno sings by design.

A sung track needs words before it needs a voice, and this is the one step where our product is the honest answer. The AI song generator takes a form brief and returns a title and a full lyric with [Verse] and [Chorus] tags, ready to paste into Suno's Lyrics field. For the ferry clip as a song, the brief might look like this:

theme:     a ferry crossing at dawn, leaving the old town behind,
           the far shore getting closer, nothing said out loud
POV:       first
language:  en
structure: no-bridge
hook:      title-line
vocal:     female
emotion:   hope, longing
age:       25-34

What it does not do matters as much. It does not sing, it makes no audio, and it does not see your video: the timing work in the previous section is still yours. One SM1 lyric costs 20 credits ($0.20); SM2 and SM3 run an extra editing pass that rewrites weak lines and cost 80 credits ($0.80). There is no free trial: the plans are $5 a month for 500 credits, or $19 once for 1,500 credits that never expire, both on the pricing page. Keep the song short for short video: the no-bridge and loop structures leave fewer sections to trim around.

The licence is where video music goes wrong later

The music rarely gets a video taken down on the day it is posted. The licence gets it claimed or muted a month later, or turns into a problem when a client asks what rights they are buying. Read the plan you are on, not the marketing line:

• Suno: the free plan carries no commercial rights; Pro and Premier list commercial use rights, with limits in the terms.
• ElevenLabs: free-plan music cannot be downloaded and needs attribution; paid plans, and even the lighter Enterprise tier, exclude film, TV, radio and studio games; only the full Enterprise Music plan lifts that.
• Adobe Firefly: Adobe describes the music as royalty-free and safe for commercial projects and says it does not claim ownership of what you generate.
• Freebeat: the site promises a full commercial licence and copyright ownership; check Freebeat's terms for whether that covers output made on free credits. Whether AI output can be owned at all is an open question in several countries; our explainer on who owns AI-generated music separates the licence a company gives you from the copyright a law may or may not recognise.

If the video goes to TikTok, Shorts or Reels, the platform layer adds its own rules on top of all this, which we unpacked in royalty-free music for Shorts, Reels and TikTok. And for the words: lyrics from our generator are non-exclusive and can overlap between users, as our disclaimer says. None of this is legal advice; for a paid client job or a broadcast, ask a lawyer in your country.

Which route fits which job

• A silent product clip, explainer or B-roll edit under five minutes, instrumental, needed today: Firefly's Generate music, because it defaults to your clip's length and shows you four takes against the picture.
• Several takes to choose from, on a paid ElevenLabs plan, for online use: Video to Music in ElevenLabs Studio, as long as the project is not film, TV, radio or a studio game.
• Social clips where you also make the visuals in the same place: Freebeat, once you have read what your plan allows.
• A phone moment turned into a short song for fun: Suno Scenes, if your app version still has it.
• A swell on an exact cut, a sound that repeats across a series, or a song with words: generate it yourself in Suno with section tags, and write the lyric first if anything is sung.

The three-cut test

Before paying for any of these, take the clip you actually need to score and write down its three biggest picture changes with timestamps (for the ferry: 0:12, 0:31, 0:40). Run the tool you are leaning toward on its free tier (or its cheapest plan, where the free one does not let you download), put the result under the picture, and play only the two seconds around each of those three moments. If the music changes in at least two of the three places, the tool reads your kind of footage well and you can score the rest of the project with it. If it changes in one, override the suggested prompt with your own mood words and run it again. If it changes in none, stop uploading and switch to route two: describe the clip in a Style prompt, lay out the sections in tags, and do the last half-second of sync yourself on the timeline.