Replace the music in a video, keep the dialogue

Published October 2026

Temp music that never got cleared, a cue the cut has outgrown, a track a platform flagged: the music is mixed in with the voices and effects, so muting it mutes everything. Doseedo splits the soundtrack into dialogue, music and effects first, then writes a new score in the old music's place and puts the dialogue and effects back exactly as they were.

Four ways to treat the old music

• Replace: lift it out and score in its place. The new score is written to the scenes where the old music played.
• Recreate: keep its tune, harmony and tempo, re-orchestrated for new players, in the same places.
• Remix: keep it, reworked: its own parts rebalanced or dropped, and new parts written over it.
• Keep: leave it alone and score only where the film is silent.

Pick one under "If the film already has music" in the scoring studio before you press Score it.

What was measured

On a dialogue scene whose parts were known, replacing the music left the dialogue within 0.2 dB of the original, the effects within 1 dB, and the music dipped 14 dB under the five lines. On a scene with its own score, the old music sat 34 dB down in the printmaster after the replace (it had been almost as loud as the new score when the two were simply mixed together). The split is one pass of a model trained to separate dialogue, music and effects in film soundtracks (Bandit v2 trained on the Divide and Remaster v3 set, CC BY-SA 4.0).

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 stem, with the notes it played, on a timeline you can keep editing.
• A Logic Pro or Ableton Live project of the whole score, one button from the studio.

What it costs

Watching the film, mixing and delivery are 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

• Percussion can bleed. In a busy scene some of the old music's drums can stay in the effects, about 10 dB down.
• Recreate is for music you have the right to adapt. It keeps a tune and its harmony; use it on your own film's music or music you have cleared, not on someone else's song.
• Instrumental only. A song with vocals is treated as music and replaced; the new score has no voice.

Related

• AI film scoring
• Stem separation
• Music for video editors
• Add music to a video