# What you can use Optic for

> By who you are: a series with one presenter, a finished film, a product, signs and text, styling, animation, rooms and ads, each with a prompt to start from.

Optic is one model for many kinds of work. Below, by who you are: the situation, what Optic does in it, a prompt to start from, and what to know before you press. Every case uses the same **Revise** button, the same words box and the same rule — only what you name changes, everything else stays as your video has it.

None of these needs a special setting. Bring your clip, choose the stretch, add your pictures if you have them, write, and the price is on the button before you press.

## A creator with a series: one presenter, hundreds of videos

**The situation.** A channel with hundreds of short videos in the talking-head style: one presenter facing the camera, teaching a language. You want a different presenter across the whole series — a character of your own, a mascot, an animated host, or a person who has agreed to be its face — without recording a single lesson again.

**What Optic does.** Revise each video and change only the presenter. The lesson stays: the words on screen, the room, the cuts, the pace, the sound. The new presenter stands where the old one stood and plays the old one's performance — eyes, gaze, lips and every expression follow the original, frame for frame, whether or not anyone is speaking at that moment.

**A prompt to start from.** *"Replace the presenter with the character in @Image 1, exactly as the picture shows it. Everything else stays as it is."*

**What to know.** The sound stays the clip's own, so the new presenter speaks with the clip's voice. Each video is its own revision, up to 60 seconds at a time; a longer lesson is revised one stretch at a time — see [Longer films, series and business](https://routix.studio/help/optic/longer-films-and-business). Give the same pictures and the same words for every video of the series: it helps the presenter look the same from one video to the next. Everyone real in it must agree — the presenter whose voice and performance stay, and anyone whose face comes in: see the [Content Policy](https://routix.studio/help/policies/content-policy). A clip that cannot be revised because it may show a real person's face costs nothing: every credit comes back — see [when a revision does not work out](https://routix.studio/help/optic/when-a-run-fails#if-your-clip-shows-real-peoples-faces).

## A studio: an actor replaced in a finished film

**The situation.** The film is shot, edited and finished. Then one actor has to be replaced, in every scene they are in, and a reshoot would mean the whole crew, the locations and the schedule again.

**What Optic does.** Revise those scenes instead of reshooting them. The blocking, the camera, the light, the cuts and the sound stay the film's; the new actor plays the old one's part frame for frame, and whatever happened to the old one happens to the new one, at the same moments.

**A prompt to start from.** *"Replace the man in the brown coat with the man in @Image 1. The picture shows his face and hair only, so his coat and everything around him stay as the film has them."*

**What to know.** This is a case for studios, and the first step is to write to us at support@routix.studio — before any run; see [Contact us](https://routix.studio/help/account/contact-us). Say what the film is, how long the scenes run, and who is being replaced, with the consent of the people in it: the [Content Policy](https://routix.studio/help/policies/content-policy) needs the consent of anyone whose face, body or voice you use. A self-serve run is not the way here — a clip that may show a real, well-known person's face is turned down, nothing is delivered and every credit comes back: see [when a revision does not work out](https://routix.studio/help/optic/when-a-run-fails#if-your-clip-shows-real-peoples-faces). Each revision today is up to 60 seconds, delivered as one film; longer lengths in one revision are arranged for business on request. The film comes in 720p or 1080p; for a larger size, see [Upscaling a video](https://routix.studio/help/studio/video-upscale). The sound stays the film's own, so the new actor speaks with the recorded voice.

## A brand: your product in footage you already have

**The situation.** The footage is good, but the product in it is last season's — the label changed, the colour changed, the pack is new — or you want the same clip to show a second product.

**What Optic does.** Replaces the label with yours, changes the colour of the pack, or turns the product into the one in your picture. The hand that holds it, the table, the light and the camera stay as they are.

**A prompt to start from.** *"Replace the label on the green bottle with the label in @Image 1, at the same size and place on the bottle. The hand and the table stay as they are."*

**What to know.** A picture of a logo or a pack is the whole new look of that logo or pack, so use the final artwork. Say its size and its place. Your words and your pictures never change the price — only the seconds and the quality do.

## A shop, a market or a street: signs, text and captions

**The situation.** Footage of a market, a shop front or a street. A sign says the wrong thing, a price has changed, captions are burnt into the picture, or a logo you have no right to is in the frame.

**What Optic does.** Changes or removes text and logos, in the same lettering, colour and size unless you ask otherwise. Everything around the sign stays.

**A prompt to start from.** *"Change the lettering on the red awning to FRESH FRUIT DAILY, in the same style and colour. Remove the white caption at the bottom of the frame for the whole stretch."*

**What to know.** Write the new words exactly as they should read, letter for letter, in capitals where they should be capitals. For several signs, write one sentence for each; when two signs look alike, mark the one you mean with [Focus](https://routix.studio/help/focus/what-is-focus).

## A stylist or a fashion brand: new looks on the same footage

**The situation.** One shoot of a model walking, and you want the same walk in several outfits — or the garment is right but its fabric, its colour or one detail is not.

**What Optic does.** Changes a garment from your words or from a picture, garment by garment; changes a fabric's texture; changes one side of a jacket and leaves the other. The walk, the light and the camera stay, so every version lines up with the last.

**A prompt to start from.** *"Change her jacket to the jacket in @Image 1. Her face, her hair, her jeans and her boots stay as they are."*

**What to know.** Each outfit is its own revision of the same stretch — same words, one garment changed. A picture is the whole new look of what it shows, so a picture of the garment on its own is the surest; if your picture shows a person wearing it, say what stays, as the prompt above does.

## An animator: characters, fur, skin and materials

**The situation.** An animated short with a talking fox, a robot, a dragon. The design changed after the animation was finished: a different colour of fur, a different material, a new character in the same role.

**What Optic does.** Works on animation as on filmed footage. Changes the fur, the skin, the material or the whole character, and keeps the acting — a character that talks at some moments and is silent at others plays the same performance.

**A prompt to start from.** *"Change the fox's fur from orange to silver-grey, and make its scarf red. Its eyes and its expressions stay as they are."*

**What to know.** A picture of your character design is the whole new look, so bring the final design. A character stays itself through the whole stretch; when its look changes, it is one character with two looks.

## A property or interior film: the room, the lamp, the frame

**The situation.** A walk through a room, filmed once. You want to show it with other furniture, another lamp, another picture on the wall, a view of night through the window — or the inside of a car in another finish.

**What Optic does.** Changes one thing in the place or several — a lamp, a frame, a sofa, the seats of a car — while the camera's path through the room, the walls and the light stay as they were.

**A prompt to start from.** *"Change the lamp on the side table into a tall brass floor lamp with a white shade. Change the picture in the frame above the sofa to the painting in @Image 1. Everything else in the room stays as it is."*

**What to know.** Write one sentence for each thing that changes; the room's light stays as your video has it unless you name it. For the inside of a car: *"Inside the car, make the seats tan leather and the dashboard dark walnut. The outside of the car stays as it is."*

## An agency: variants of one ad

**The situation.** One ad, several versions — another colour of the product, other words on the poster, another presenter for another market.

**What Optic does.** Revises the same stretch several times, each with one line of your words changed. Because everything not named comes from the original, every version keeps the same timing and the same cuts.

**A prompt to start from.** *"Change the text on the poster behind him to OPEN LATE."* — and for the next version, *"Change the text on the poster behind him to OPEN SUNDAYS."*

**What to know.** Keep the rest of your words the same from version to version. The price shows on the button for each version and depends only on the seconds and the quality.

## Before you start any of these

- The price is on the **Revise** button before you press. The press holds it; it is spent only when your film is delivered, and every credit comes back if it is not.
- Marking a subject with [Focus](https://routix.studio/help/focus/what-is-focus) costs nothing.
- The [Content Policy](https://routix.studio/help/policies/content-policy) applies to every case: no real person's face, body or voice without their consent, and nothing made to deceive.

## Frequently asked questions

### Can I see what Optic will do before I pay?

There is no preview step: **Revise** is the one press, and the film is made inside it. Start with a short stretch and one clear change; the price of a few seconds is on the button, and if the film is not delivered every credit comes back.

### Does Optic suit a series of hundreds of videos?

Yes. Each video is its own revision, and giving the same pictures and the same words each time helps the result match from video to video. For a whole series or a catalogue at volume, write to us: [Longer films, series and business](https://routix.studio/help/optic/longer-films-and-business).

### Can I use the face of a child?

A revision can be turned down when what you sent shows a child, and nothing is charged for a refused change.

### Can I use the face of a well-known person?

Not in a revision you start yourself: it can be turned down, and nothing is charged for a refused change. Studio work with well-known faces starts with a conversation, not a run — write to us first, with the consent of everyone whose face, body or voice is in the film, and we will tell you what we can do today: see [Contact us](https://routix.studio/help/account/contact-us).

## Next

The whole breadth of changes, with a prompt for each, is in [What you can revise](https://routix.studio/help/optic/what-you-can-revise); writing your own starts in [Prompts for every level](https://routix.studio/help/prompts/prompts-for-every-level).

Source: https://routix.studio/help/optic/use-cases · Updated 2026-11-09