AI soundtrack generator for video

Published November 2026 · Updated November 5, 2026

Doseedo is an AI soundtrack generator for video, in your browser: upload any video and an AI composer watches it, then writes, plays and mixes an original soundtrack that lands on its cuts. Every part is its own native stem with its MIDI, so one part, one bar or one cue can be changed without regenerating the rest, and the video comes back scored, with a printmaster, an M&E, a cue sheet and an editable Logic Pro, Ableton Live or REAPER session. Prefer your own AI agent? The same loop runs over MCP in ChatGPT or Claude. A trailer, a vlog, an ad, a game capture, a short: the soundtrack is written for that video, not picked from a library.

Your first film score is free: sign up with a verified email and it is on us, up to 300 credits.

Scored this way

Scored through the studio, nothing touched by hand. The whole reel.

How video to music works here

1. It watches the video. Every cut to the frame, every change of scene (a fade, a transition, a new place), how fast the camera moves, and where people talk. A storyboard of the whole video goes to the composer with the frames of each scene.
2. It spots the cues. Where music starts and stops, in SMPTE timecode, and the moments worth hitting.
3. It writes the music as notes, part by part, on a tempo map that puts each hit on a downbeat.
4. It plays every part on its own. Instrument models trained on real recordings, one per part, each checked against its notes.
5. It mixes and puts it back on the video, dipped under the voices and normalized to web, streaming or broadcast loudness.

Native stems, not a separated mix

Most video-to-music tools return one mixed track. Some can split it afterwards into a few groups, such as drums, bass and the rest, by running a separation model over the mix. Here nothing is separated: each part is written and played on its own, so it arrives as its own clean stem with its own notes. That changes what a revision costs.

Which tools return which is in the comparison, from each vendor's own documentation.

Any video

• Up to 2 GB per upload, as MP4, MOV, M4V, WebM or MKV, from any editor or phone.
• Long videos are scored in up to eight cues per pass, where the picture needs music most; ask for more afterwards.
• A video that already has music is split into voices, music and effects first, so the new soundtrack can replace the old music with the voices kept. See replacing the music in a video.
• Pick a sound or describe it: orchestral, animation, fantasy, thriller, horror, sci-fi, action, drama, documentary, comedy, western, noir, silent film, trailer.

What you get back

• The scored film: your picture, copied untouched, with the new soundtrack (MP4 with AAC 320k, or a MOV with 24-bit PCM if that is what you sent).
• The printmaster: the whole mix as a 24-bit, 48 kHz WAV, normalized to the delivery loudness you pick (web −16, streaming −14 or broadcast −23 LUFS) with the true peak under the limit.
• An M&E: music and effects without the dialogue, for a dub or a trailer.
• Dialogue, music and effects stems, when your film had a soundtrack of its own.
• Every cue's mix and every part as its own native stem (played as its own render, never separated from a mix), with the MIDI it was played from, on a timeline you can keep editing.
• A Logic Pro, Ableton Live or REAPER project of the whole score, from the Export session button on the delivery, at no credits: every cue on one timeline at its own second with a marker, every part a track with its audio at the mix's level and pan and its MIDI, on the film's tempo map. In Logic Pro and REAPER the film itself is on a video track.
• A music cue sheet (CSV): each cue's timecode in and out, its length and its use, as it was placed on the film, ready for a festival, a broadcaster or your performing-rights society.

What it costs

Your first film score is free. A free account with a verified email gets a one-time 300 credits for its first score, on top of the 120 a month, and the composer plans that score to fit them, so a long film is scored where it matters most.

After that, watching the film, mixing and delivery stay free. The performances use credits, like any render on Doseedo: 10 credits for every 30 seconds of music for each group of up to six parts, and a flat 20 to split the film's own soundtrack. A one-minute scene with a mid-size orchestra is usually 60 to 140 credits; the panel shows the estimate for your film before you start, beside what you have left.

A free account comes with 120 credits a month. Pro is $12 a month with 2,000. You own what you make, to the extent the law allows (Terms §6.3).

Honest limits

• Instrumental only. No songs, no vocals.
• Instrument models, not a session orchestra. They are trained on real recordings and each part is checked against its notes, but a live orchestra on a scoring stage is a different thing, and a picky ear will hear it on exposed solos.
• It sees the picture, not the plot. The composer reads the keyframes to decide what a scene is about; your direction and the hits you mark are what tell it what matters.
• Long films are scored in up to eight cues per pass, the ones the picture needs most. Ask for more afterwards.
• Splitting a busy soundtrack is not perfect. When the old music is replaced, some of its percussion can stay in the effects, about 10 dB down.

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