EVERY SONG HAS A WORLD.MUSIC, WITH A PICTURE
Cosmotune
A free music and video app for Android and desktop: synced videos, lyrics, downloads and tools for your listening.
02 / SELECTED WORK
Follow the evidence.
Independent projects. Obsessive attention.
Every decision, documented.
EVERY SONG HAS A WORLD.
THE ENGINE BEHIND THE PICTURE
OpenCanvas
The official video, locked to the song. A small, independent engine that finds the right frame without a server or API key.
PREPARATION, WITH A PLAN.A WORKSPACE FOR THE NEXT INTERVIEW
PreppUp
Python interview prep that goes beyond reading: run code, practise SQL, work through 349 problems, and keep your progress in one place.
Open the live appCASE FILE / 004The next obsession.SEALED +
Another project is taking shape. Documentation first, then the code. This file opens when there is something worth sharing.
03 / FIND YOUR WAY
Nothing here
is an island.
Three places hold three signals: an engine, an archive, and a way to reach me. Follow the map and piece them together.
LOCATION 01 / THE LIGHTHOUSE
A signal in the noise.
OpenCanvas finds the connection between a song and its video. Start with the engine.
Explore OpenCanvas ↗S.I. / FIELD MAP
ILLUSTRATIVE · NOT TO SCALET H E A T L A N T I C
ILLUSTRATIVE · NOT TO SCALET H E A T L A N T I C
04 / THE ARCHIVE
The thinking.
Behind the things.
Specifications, design logs and benchmarks, written as the work happens.
- Read
What it does
How OpenCanvas finds the official video and keeps it on the right second.
- Read
How it works
Frame-size envelopes, FFT alignment and the song-to-video map.
- Read
Measured, not claimed
Cold start on 16 songs in 6 languages, with the full tables.
- Read
Use it in your app
Installation, configuration and player integration in one practical guide.
- Open
Try it live
The engine compiled to JavaScript, running in your browser.
- Read
Design and plan
Approach, platforms, success criteria and the decisions behind them.
- Read
Interface design
Components, screens and the path from design to implementation.
- Read
Dynamic colour
How the player takes its colours from the artwork on screen.
- Read
Logo design log
The eclipse C and its waning moon, with every round that led there.
- Read
Phase plans
Phases 0 to 3, from the fork to the new interface.
- Read
Video mode
The video experience alongside music.
- This drawer is locked. Its records will appear here when the case opens.
No record matches that search. Try a shorter word.
05 / THE PERSON BEHIND THE PROJECTS
Curiosity is
the constant.
OpenCanvas began with a small observation: everything needed to line up a music video with a song is already sitting in two file headers, about 0.3 MB each. No decoding, no server, just arithmetic.
I'm Vijay Janarthanan, a full stack developer. I build apps and developer tools, document the decisions behind them, and publish what I can as open source.
- NowLaunching Cosmotune v1
- ShippedPreppUp and OpenCanvas
- WritingDesign logs, specifications and benchmarks
PERSONNEL FILE / VJ—001
VJ
VIJAY JANARTHANANDEVELOPER · BUILDER · OBSERVER- Name
- Vijay Janarthanan
- Role
- Full stack developer
- Open source
- OpenCanvas (Apache 2.0)
- Approach
- Curiosity, evidence, iteration
06 / THE NEXT CHAPTER
Send a signal.
Questions about a project, a collaboration or the docs. I read everything.