Video Editor · Open Source · Brazil

Tools built by an editor,
for editors

I'm samaBR — a video editor who got tired of doing repetitive things by hand and started building tools to fix that. I'm not a developer. I use Claude Code to build, and I ship what I need.

The Story

I've been editing video for years — music videos, reels, trailers. The kind of work where everything has to land on the beat. And for years, I placed markers by hand. Every. Single. Song.

At some point I got tired of it. I knew there had to be a way to automate BPM detection and marker creation inside Premiere Pro. I looked for plugins — found a few, none of them did exactly what I wanted. So I decided to build one.

The problem: I don't write code. I know what I want to build, I understand the workflow, but I don't speak JavaScript fluently enough to write a plugin from scratch. That's where Claude Code came in. I described what I needed, it built it, things crashed, we figured out why together, and iterated until it worked.

That process produced three tools. All open source. All free. All solving real problems I had in my own editing workflow.

Timeline

🔴
April 2026 — v1.0
BeatMarker Premiere
First plugin. WAV only, basic BPM detection, colored markers on source clips. The workflow problem that started everything.
🔵
April 2026 — v1.0
BeatMarker AE
Same concept for After Effects — but totally different architecture. CEP instead of UXP, ExtendScript bridge, AE 2026 install path discovery.
🔵
April 2026 — v1.1
BeatMarker Premiere v1.1
Added confidence indicator, beat selection (toggle individual beats 1–4), and phase shift with selective beats.
🟡
April 2026 — v1.2
BeatMarker Premiere v1.2 + MP3
MP3 support — the hardest problem of the whole project. WASM crashed everything. The solution was pure JS decoding with precise timing calibration.
🎧
May 2026 — v1.0
MonoStereoToggle
A completely different kind of tool — a Windows 11 utility in C# to toggle mono/stereo audio with a global hotkey. Built because checking audio mix in mono shouldn't take 8 clicks.

How It's Built

Every tool here was built with Claude Code as the primary developer. I act as the product owner — I define what it should do, test it, report what broke, and decide when it's done.

AI
Claude Code
Anthropic's AI coding tool. Does the actual programming.
Hosting
GitHub Pages
Free static hosting. Every site is a public repo.
Premiere Plugin
UXP + HTML/JS
Adobe's modern extension runtime. Distributed as .ccx.
AE Plugin
CEP + ExtendScript
Adobe's legacy CEP platform — still the only viable option for AE 2026.
Windows App
C# / .NET 8
WinForms + Windows API for system-level audio control.
Audio Analysis
music-tempo
Pure JS BPM detection. Custom WAV/MP3 decoders on top.

Contact & Links

Everything is open source. Bug reports, suggestions, and pull requests are welcome on GitHub. I'm not active on social media, but Issues are the best way to reach me.