AI Sound & Music
Music and Sound Effects for Video — or from Text

How does it sync sound to the picture?

That frame-aware approach is what separates a real synced pass from generic royalty-free clips you would otherwise have to nudge into place by hand. Because the engine is watching the picture, the timing comes out aligned on the first try for most clips, and you skip the tedious part of sound editing — scrubbing the timeline to line up every hit. The studio auto-detects your clip length and matches the audio to it, and you can request up to three takes to compare in a single run.

For sound effects on a video, you can leave the prompt blank and auto-detection reads the footage and chooses the sounds itself — or add a short prompt like "gravel footsteps and distant wind" or "cinematic sci-fi impacts" to steer the palette. Prefer music? Switch to "Add Music to Video" (with an option to keep the original speech) or, with no video at all, use text-to-music and text-to-sound-effects to generate audio purely from a description.

How much does it cost in credits?

Cost is dynamic: it depends on the mode you pick, how long the output is, and how many takes you request — and every amount is a multiple of 5, starting from 5 credits for a short generation. You always see the exact credit total on the generate button before you run anything, so there are no surprises. Adding sound effects or music onto a video is priced by clip length; generating audio from text is priced by the output duration you choose. Credits are shared across every Imagera tool.

Because you choose the number of takes (1, 2, or 3), you control the trade-off between cost and choice: a single take is the cheapest, while extra takes let you A/B the result against your video or brief. Whatever the mode, the on-screen estimate updates as you change the length and take count, so the credit cost is always visible before you commit.

How do I build a full soundtrack?

This studio covers both sound effects and music — foley, impacts, ambience, texture and an original score — so you can build most of a soundtrack in one place. When you want each layer separate so you can balance it on its own, use the audio-only modes and combine everything with your voice track in your editor. Here is how the pieces fit together:

• Sound effects — this studio. Timed foley and impacts synced to the picture, or generated from a text prompt.
• A music track — score a video directly here with "Add Music to Video," compose from a brief with text-to-music, or use Music Factory for songs with structure and vocals.
• Narration or dialogue — add a voiceover with the Voice Generator for explainers and ads.
• The picture itself — if your clip is still silent because it came from AI, make it in the Video Generator first, then bring it here to score.

For a deeper walkthrough with example clips, see the guide on AI sound effects for video.

How do I get the best results?

For the video modes, sync quality depends more on the clip you feed it than on the settings — the engine scores what it can see, so footage with clear, isolated on-screen action gives it obvious events to hit. For the text modes, a specific, well-described prompt is what does the work. A few practical habits get you clean results in the first run or two.

Because generation only takes seconds, treat it as iterative: run a pass, check it against the picture or your brief, adjust the mode, length, take count or prompt, and run again. That loop is far faster than hand-placing library clips or briefing a composer, and it is how most people dial in a reel's sound in a couple of minutes rather than an afternoon.

What formats, modes and controls are supported?

The studio runs entirely in the browser and accepts the common video formats you already export from your editor or capture from a phone — and the text modes need no upload at all. The table below is the honest spec so you know what to expect before you start.

If your clip is larger than 100MB or longer than you want to score in one pass, trim it in your editor first and upload the section you care about. For videos that came out of an AI model without any audio at all, generate the picture in the Video Generator and bring the result straight here to add its sound.

Can I use the generated music and sound effects commercially?

Yes. Audio you generate on a paid plan — whether it is sound effects or a music track — comes with commercial rights, so you can use it in client work, monetized videos, ads and social content. The takes you receive per run are all yours to keep: download the one you want, or export several and blend them in your editor. There are no per-clip licensing fees on top of the credits you already spent.

A practical point worth knowing: the audio-only modes give you a sound layer for your clip, not a replacement editor. You get timed effects or a track, then bring that audio into whatever timeline you already use to set levels against voice, add a fade, or trim the tail. Keeping SFX and music as their own layers is what lets you mix them properly rather than being locked into a single baked-in balance — and if you prefer, the video modes will burn the audio straight onto the clip for you.

If you generate a lot of clips, the credit model scales predictably: because the on-screen estimate shows the exact cost before each run, a batch of short reels is a known, planned spend, and every one of them can arrive with two or three takes to choose from. That predictability is the reason teams reach for an AI pass on volume work instead of licensing library clips one at a time.

Why is this the missing step for AI-generated videos?

The workflow is short. Generate or upscale your clip, upload it here, pick a mode, and run a pass — you get one to three synced takes in seconds. Because the sync is driven by the picture rather than a caption, you do not need to know sound design; the engine places events where the motion is. That makes it practical to give an entire batch of AI clips their audio in the time it used to take to score a single one by hand.

It pairs naturally with the rest of an AI video pipeline. Build the shot in the Video Generator, score it here, add a track from Music Factory and, if it needs a voice, drop narration in from the Voice Generator. Each tool draws from the same credit balance, so a full picture-plus-sound clip stays a few generations, not a full production.

More questions about AI Sound & Music

See it in action

Foley, sound-design and scoring scenes that show the kind of sonic detail AI Sound & Music adds to your footage.