Video Editing & Animation for Creators

What we do

Three things, and the combination is the point. Most channels have to hire an editor and an animator and then make them talk to each other.

Video editing (the main thing we sell)

Cuts, pacing, audio clean-up, sound design, transitions, and dynamic captions made by hand — the animation, colour and typeface change word by word. A generator leaves them all identical; these are not.

From $20 a reel

Scientific animation (built with Manim)

Equations that transform step by step, vector fields, graphs built from real data, simulations that have to be solved before they can be shown. For when something technical has to be explained and come out correct.

From $20 standalone

Motion graphics (built with Remotion)

Text that lands, elements that fill, counters, visual comparisons, animated infographics. For when the job is impact rather than explanation.

Included from $30 a reel

Our work

Pricing

Priced by final screen time, never by hours worked. Everything in USD, fixed in writing before we start.

Vertical — reel, short, TikTok (up to 90s)

• Editing — cuts, audio, sound design, transitions, dynamic captions: $20 USD
• Editing + animation — Manim or Remotion, made for that content: $30 USD

Horizontal — YouTube

• Up to 5 min: Editing $50 USD · With animation $75 USD
• 5–10 min: Editing $90 USD · With animation $130 USD
• 10–20 min: Editing $150 USD · With animation $210 USD
• Over 20 min: Editing Let's talk · With animation Let's talk

Monthly plans

• Reels: 8 vertical videos a month — $140 USD
• Reels +: 8 vertical videos a month, with animation — $220 USD
• Channel: 4 horizontals up to 10 min + 8 verticals a month, editing only — $450 USD

Animation only, no editing

• 15 s: $20 USD
• 30 s: $35 USD
• 60 s: $60 USD

Why us

We understand the content, not just the animation.

A general editor needs you to explain what a vector field is or which way the force points. Send us the concept and we already know how it should be drawn. And if your topic is not physics, the method is the same: tell us the idea and we understand it before we cut it.

Your editor and your animator are the same people.

Most channels hire two suppliers and then have to coordinate them. Here the animation is designed knowing exactly where it lands in the cut, and the cut is made knowing what animation is coming.

We know what retains, because we do it with our own audience.

Física Eterna has close to 100,000 followers across platforms, 37,500 on TikTok alone. Every one of those videos is edited by us.

The physics is checked before delivery.

An inverted sign, or a field pointing the wrong way, is worse than showing nothing. That check is literally the product.

Clear process.

Fixed quote before anything starts, two revision rounds included, and dates we put in writing.

Who we are

Matías Ortega

Physicist, MSc student in Physics. Edits and animates every piece himself, which is why the two never have to be reconciled. Researches how people learn physics and where the confusion comes from.

Carlos Bermúdez

Physicist, MSc student in Physics. Machine learning and scientific computing: simulations, real data and the numerical work behind a graph. Built this site.

How it works

• You tell us what you need and send the material.
• We send a fixed quote in writing: scope, final length, price, deadline and how many revisions are included.
• You approve by email — that email is the contract.
• 50% deposit, and the clock starts.
• First delivery with a watermark, for review. Two revision rounds included.
• Remaining 50%, and the clean files go out.

Before you ask

Can I get it cheaper elsewhere?

Sometimes, and sometimes it works out fine. The difference shows when it doesn't: an animation with a conceptual error has to be redone from scratch, which costs more time than the price gap ever saved. We are physicists, we check the content before animating it, and we hit the dates we commit to.

Can you do a free sample first?

We don't do free trials on request, but you can start with a single $20 vertical. Your risk is $20, ours is an afternoon. If you like how we work, we keep going from there.

What if I don't like the result?

You approve the direction before anything gets animated. After the first delivery you have two revision rounds included. The deposit covers work already done; the balance is only paid on final delivery.

What don't you do?

Character animation and artistic illustration, After Effects and Blender work, and academic assignments for third parties. We also don't start without a deposit, and clean files never go out before the balance is paid.

Do you use AI in your process?

Production is done with computer-assisted tooling, including AI tools. All work is directed, reviewed and scientifically validated by us. A tool can generate an animation; only a physicist catches that the field is pointing the wrong way — and that catch is what you're paying for.

Do I get the source files?

As an add-on, yes (see the table above). By default you get the rendered video in the formats listed, which is what most channels actually need.

Tell us what you need

Send a link to your channel and the video you have in mind. You get a fixed quote, a deadline and exactly what's included — in writing, before anything starts.

Valparaíso, Chile — working worldwide