Tesla Sentry Mode Viewer

A web-based viewer for Tesla Sentry Mode and Dashcam recordings. Simple, fast, and runs entirely in your browser - no uploads, no servers, just you and your footage.

Open Web Viewer

What's This?

Think of it as a portable version of Tesla's built-in Sentry Mode viewer. Grab your recordings from your USB drive, drop them in, and watch all camera angles simultaneously. It's built with vanilla JavaScript and works completely offline - your videos never leave your computer.

Features

• Multi-camera grid view - See all 4 cameras (front, rear, left, right) at once in a 2x2 grid
• B-Pillar camera support - Automatically detects and displays left and right pillar cameras on HW4-equipped vehicles
• Single camera view - Click any thumbnail to focus on one camera fullscreen
• Synchronized playback - All cameras play in perfect sync
• Timeline with event markers - Jump straight to the interesting parts
• 15 second skip - Quick navigation through your footage
• Real-time timestamp - Shows exact date and time as you scrub through
• Dynamic favicon - Shows playback state (playing/paused/loading) in your tab

How to Use

1. Get your recordings - Copy the folder from your Tesla's USB drive (works with both TeslaCam/SentryClips/[timestamp] and TeslaCam/SavedClips/[timestamp])
2. Click the hamburger menu in the top-left corner
3. Select your folder - Pick the directory with your .mp4 files
4. That's it! Hit play and watch

The viewer automatically detects:

• All 4 main cameras (front, back, left repeater, right repeater)
• B-Pillar cameras on HW4-equipped Teslas (left pillar, right pillar)
• Event markers from event.json (if present)

Installation

Want to run it locally? Here's how:

Quick start:

git clone https://github.com/Mrkl21full/SentryModeViewer.git
cd SentryModeViewer

Then just open index.html in your browser. Done.

Or download:

• Click the green "Code" button → "Download ZIP"
• Extract and open index.html

For developers:

cd src
npm install
npm run watch  # Auto-compile SCSS

Privacy & Security

Your videos stay on your computer. Period.

The viewer uses the File System Access API to read files directly from your disk. Nothing gets uploaded, nothing gets sent anywhere. It's all processed in your browser using Blob URLs.

Browser Support

Works best in:

• Chrome/Edge (full support)
• Firefox (full support)
• Safari (limited - no File System Access API, uses file picker fallback)

Known Quirks

• Video freeze? Occasionally a video might freeze while others keep playing. Click between camera views 2-3 times and it'll sort itself out.
• Timeline accuracy - Sometimes the progress bar might drift slightly from the actual playback position. It's close enough for navigation though.
• File naming - Tesla's file naming format is expected: YYYY-MM-DD_HH-MM-SS-[camera].mp4

Tech Stack

• Vanilla JavaScript (no frameworks, just pure JS)
• SCSS for styling
• Font Awesome icons
• Inter font (Google Fonts)

Screenshots

Directory selection:

Grid view with all cameras:

All 4 (or 6) cameras playing simultaneously with synchronized timeline.

Contributing

Found a bug? Have an idea? PRs are welcome! This started as a weekend project and it's been growing ever since.

License

GPL-3.0 - See LICENSE file for details.

---

Tip: If you're viewing a lot of footage, use the "Jump to Event" button when available - it'll take you straight to when something actually happened.