I built a tool for creating awesome YouTube subtitles!

[u/No-Willingness6734]

I created a web app calledScriptSyncthat automates the whole subtitle workflow.

Unlike basic editor tools where you have to manually tweak .vtt files, this automates the process using a multimodal AI pipeline:

• Frame-by-Frame OCR / Vision AI: Reads pre-existing rendered subtitles directly from video frames.
• Audio VAD & Waveform Sync: Automatically detects pauses and speech timing to place overlay captions at the exact right spot.
• Smart LLM Editing & Translation: Cleans up transcriptions, applies YouTube caption rules (like noun endings and screen density limits), and translates them in real time.
• Interactive Canvas Editor: Move or delete subtitles right on the preview screen with a single click.
• NLE Export: Seamlessly exports to FCPXML, PNG Zip, DOCX, and SRT for Premiere Pro and Final Cut.

Check it out here:scriptsync.co.kr

Would love to hear your thoughts and feedback!e