RootBro Lab

Built captions for songs.
Not generic speech.

Generic auto-captions were built for talking heads, not music. RootBro SRT helps creators generate cleaner subtitles for songs, lyric videos, and music-driven content with far less manual fixing.

Launch Demo See How It Works
Browser-based workflow · SRT export · Built for music creators
The Problem

Auto captions were not built for songs.

Music creates problems that speech-caption tools handle poorly: melody, stretched syllables, background instrumentation, mixed languages, and lyric timing.

Generic Auto-Caption

00:00:17,000
He said man need like a mountain

00:01:03,333
outside shell bright inside wasted

RootBro SRT

00:00:17,000 → 00:00:22,000
They said a man must stand like a mountain.

00:01:03,333 → 00:01:08,000
The brighter the shell, the emptier inside.
Demo

See RootBro SRT in action.

Watch the full workflow: from song upload to subtitle export. See how RootBro SRT reduces manual fixing and accelerates lyric video creation.

Try App →
Features

Designed for song workflows.

Song-first captions

Built around lyric timing, music phrasing, and creator video workflows instead of generic speech transcription.

SRT export

Generate standard subtitle files for CapCut, Premiere, DaVinci Resolve, YouTube, and music video editing.

Less manual fixing

Reduce the repetitive subtitle cleanup that makes lyric videos and short-form music clips slow to produce.

Stop fixing song subtitles by hand.

Use RootBro SRT and get back to creating.

Launch Demo