Temp Voices for an Animatic or Short Film: Scratch Dialogue With AI

A temp voice track (also called a scratch track) is a set of quick, disposable voice recordings you drop under an animatic or a rough cut so you can judge timing, pacing, and story before your real cast records. With AudioProducer.ai you can paste your script, cast a separate AI voice for every character, add sound effects, and download the result as an MP3 to place on your timeline in your own editor. It is a fast way to hear the scene, not the final performance.

What a scratch track is actually for

An animatic lives or dies on timing. You have storyboard panels, a rough edit, maybe a music bed, and a lot of guesses about how long each beat should hold. Silence tells you almost nothing. The moment there is a voice reading the lines, the whole sequence snaps into a shape you can react to: this pause is too long, this exchange is rushed, this reaction shot needs another beat to breathe.

That is the job of a temp track. It is not a performance you ship. It is a measuring tool. You use it to lock cuts, to find the runtime, to test whether a joke lands on the right frame, and to give an editor, a director, or a client something concrete to respond to before anyone books a studio. Because it is disposable, the only thing that matters is that it exists quickly and that the timing is honest.

Scratch dialogue is common in animation, in short films, in explainer and commercial spots, and in any pitch where you need to show a scene working rather than describe it. If you are cutting a promo instead of a story, the read is a different job: see how to make a game trailer voiceover with AI for the trailer-specific version. And if your scratch lines are for a game build rather than picture, placeholder voice lines for a game prototype covers that workflow directly.

From script to per-character MP3

Here is the practical loop. Take the dialogue for the scene you are timing and paste it into AudioProducer.ai (you can paste plain text, or bring in an EPUB if your material is in book form). Cast a voice for each character. Auto-Assign will give every named speaker its own voice so a two-hander does not come back sounding like one person reading both parts, which is exactly the confusion you are trying to avoid in an animatic.

One voice per character is the single most useful thing a scratch track can do for picture editing. When each speaker is distinct, you can tell at a glance whose line is running long and where an overlap needs trimming. Add sound effects if a beat depends on one landing at a specific frame. Then render and download the MP3 and drop it onto your timeline yourself. AudioProducer.ai makes the audio; the syncing, the cutting, and the layout of your sequence happen in your own editing software, where they belong.

Keep the read plain. A temp track is not the place to chase performance nuance; you want clean, even delivery so the timing is readable and not colored by an accidental line reading you will replace anyway. If you do care about pacing on a specific passage, the controls for that are worth knowing: how to add pauses and dramatic timing to AI narration walks through shaping beats without over-directing a track you are about to throw away.

Writing the script so it voices cleanly

The cleaner your script formatting, the less cleanup you do later. Put each character's name on its own line above their dialogue, keep action lines separate from spoken lines, and strip parentheticals you do not want read aloud. AudioProducer.ai does not rewrite your script or invent lines for you, so what you paste is what you hear. That is a feature for a scratch track: you want the timing to reflect your words exactly, not an interpretation of them.

If your material is a full screenplay and you are heading toward a finished piece rather than just a timing pass, the end-to-end route is its own article: how to turn a screenplay into an audio drama with AI. For a scratch pass, though, you rarely need the whole script. Voice only the scenes you are actively cutting, in the order you are cutting them.

Swapping in the real cast later

A temp track is a placeholder by definition, so plan for its replacement from the start. Do not lock your edit so tightly to the scratch timing that the real actors have no room. Human performers breathe differently, land jokes differently, and will not match the AI read frame for frame, nor should they. The scratch track gets you a defensible runtime and a cut that reads; the final performance gets the last ten percent.

Two habits make the handoff painless. First, keep line-timing notes as you cut: which lines can flex, which reaction shots are load-bearing, where the music has to hit. Second, name your files so the real recordings slot straight in behind the scratch ones. When the booth session is done, you replace audio clips against a cut you already trust instead of rebuilding timing from zero.

What it costs and what to expect

AudioProducer.ai bills by words per month, and the free tier includes 1,200 words, which is enough to voice several short scenes for a timing pass. Because a scratch track is short lines rather than long-form narration, you can get a surprising amount of animatic coverage inside a small budget. Render, download the MP3, and you own the file to use in your edit.

One expectation to set: the output sounds finished. That is great for a client-facing pitch reel, but in an internal timing pass it can lull the room into treating a placeholder as the final mix. Flag the track as temp, and keep the note that the real cast is still coming. The tool gives you audio, not a video; it does not publish, upload, or distribute your work anywhere, and it will not sync to your picture for you. You bring the MP3 into your own timeline and take it from there.

A minimal workflow to copy

• Paste the dialogue for the scene you are cutting.
• Let Auto-Assign give each character a distinct voice, or pick per character.
• Add sound effects only where a beat has to land on a frame.
• Render and download the MP3.
• Drop it on your timeline, lock the cut, and keep flex notes for the real session.
• Replace the scratch clips with the final recordings when they arrive.

That loop turns a silent animatic into something you can actually judge in a single sitting, and it costs you a few hundred words instead of a booked studio day.

Browse more guides in the full article index, or start your first scratch track now: create a free AudioProducer.ai account and voice the scene you are cutting today.