vidsync
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Tools

AI-assisted YouTube scripts and scene-image prompts (powered by a free Gemini Gem in your own Google account), a Chrome extension for Google Flow, and in-browser audio transcription.
Write
Sync
Extension
Transcribe

Vidsync Write

A professional YouTube script-writing engine — runs for free inside your own Gemini app (as a custom Gem), no API key and no cost.

  1. 1
    Copy the Vidsync Write prompt using the button below.
  2. 2
    Open Gemini and create a new Gem, or open a new chat in ChatGPT (opens in a new tab, signed in with your own account).
  3. 3
    Paste the copied prompt into the "Instructions" field on the Gem-creation page, then click Save. In ChatGPT, paste the prompt as your first message in the new chat instead.
  4. 4
    Start chatting right there — send any message (like "ابدأ") and the engine will walk you through it step by step until the full script is done.
    You can come back to this Gem anytime from your Gems list in the Gemini app, without repeating these steps.
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Vidsync Sync

Converts a timestamped narration/SRT into ready-to-use Google Flow image prompts — also through a free Gem in your own Gemini account.

  1. 1
    Copy the Vidsync Sync prompt using the button below.
  2. 2
    Open Gemini and create a new Gem, or open a new chat in ChatGPT (new tab, signed in with your own account).
  3. 3
    Paste the prompt into the "Instructions" field, then save the Gem. In ChatGPT, paste the prompt as your first message in the new chat instead.
  4. 4
    Start chatting there, answer the setup questions (visual style, recurring characters...), then send or paste your SRT file when asked.
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Vidsync Extension

A free Chrome extension for Vidsync. Paste your prompts and it generates every image or video in Google Flow automatically, then downloads each result named by its time-stamp tag (like 3-11.jpg), so everything lands in your project already in order. Optional References keep your characters consistent across scenes.

  1. 1
    Download the extension and unzip the file on your computer.
  2. 2
    Open chrome://extensions in Chrome and turn on Developer mode (top right).
  3. 3
    Click Load unpacked and select the unzipped folder.
  4. 4
    Pin Vidsync from the puzzle icon in Chrome's toolbar, then open Google Flow and start using it.

Vidsync Transcribe

Turn any audio or video into timed subtitles (SRT, VTT) or plain text. The first time, the speech model downloads once (a few hundred MB) and is then kept in your browser. Works best on Chrome or Edge on a computer.

Names dictionary (optional) — fix words that are always transcribed wrongly
One fix per line, written as wrong ← right. Example: recieve ← receive changes every "recieve" to "receive" (whole words only, capitals ignored for English). Arabic words also match with one prefix letter (و ب ل ك ف). Saved in this browser.
Script (optional) — paste the text your voice reads
If the voice does not read the script word for word, the subtitles will follow the script. Every change is listed under its line so you can undo it.
Checking GPU… Works best on Chrome or Edge on a computer.
Choose a file to begin.