Reel Studio

A free, open-source studio for 9:16 explainer videos. Write it in your browser, render it on your own machine.

Open the editor
Hook sceneDiagram sceneCode sceneCode scene with highlighted linesTerminal sceneBullets sceneEnd card

Write a hook. It becomes scene one.

Length
Narration, estimated
Accent words
Check
Try

You write. It renders.

Your paceFirst, paste notes and write the narration scene by scene.
MinutesThen arrange scenes, text and transitions.
LiveWatch it play with your brand.
One clickExport one bundle file.
About 4 minRender the MP4, cover and QA report on your machine.

Every renderis checked

The report below is unedited, from rendering the demo reel with no API keys: 39.15 s, 1080×1920.

PictureResolution 1080×19201080×1920Pass
Frame rate30.0 fps (expected 30)Pass
Duration matches timeline39.15 s vs 39.13 sPass
No black gaps (> 0.4 s)NonePass
End card renders (not blank)Luma std 32.6Pass
SoundNo clipping (peak ≤ −0.5 dBFS)Peak −1.4 dB, mean −16.9 dBPass
Audio and video in syncDifference 0.000 sPass
Narration starts in the hookFirst voice at 0.15 sPass
Narration presentSilent placeholder voice: the demo has no voice-overWarning
DeliveryVideo codec H.264 yuv420ph264 yuv420pPass
Audio codec AACaacPass
Full decode with FFmpegNo errorsPass
Captions present in every scene7 of 7 scenesPass
Pre-render layout limitsValidated before renderingPass

What you can switch on

Record the narration yourself.

Your WAV is matched to the scenes on your machine: 0 API calls.

Let AI draft the first script.

Sends your notes to Gemini with your own key, only after you approve.

Narrate in Tamil or Tanglish.

Sarvam voices with your key, captions in romanized Tanglish.

Check every render before posting.

15 automatic checks, from resolution to clipping, in one report.

Score music to every cut.

Effects are timed from the same timeline as the picture.

Licence
MIT
Price
Free
Account
None needed

Reel Studio has no server.

The editor runs in your browser and keeps projects in this browser's storage. The final video is rendered by the open-source engine on your own computer, with your own API keys only if you choose to use any.
What runs where

In your browser

  • Script and scene editor v0.1
  • Storyboard and reordering v0.1
  • Live preview v0.1
  • Brand colours and presets v0.1
  • Custom fonts Planned
  • Export bundle v0.1
  • Prompt for your own AI assistant v0.1
  • AI draft with your key Planned

On your machine

  • Voice-over v0.1
  • Your own recording v0.1
  • Sound design v0.1
  • MP4 and cover render v0.1
  • QA report v0.1
  • Cloud rendering Not offered

Start your
first reel

Creates the project in this browser and opens the editor. Nothing is uploaded.

New project

You can change all of this later.

Start from

The sample is a 7-scene reel you can edit.