StreamGrabber

Lightweight downloader for HLS (.m3u8 via m3u8 parser), video blobs, and direct videos. Mobile plus Desktop. Pause or Resume. AES 128. fMP4. Minimal UI.

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Autor: quantavil
Instalações hoje: 5
Total de instalações: 221
Avaliações: 2 0 0
Versão: 1.2.4
Criado: 05/11/2025
Atualizado: 20/11/2025
Tamanho: 50,4 KB
Licença: MIT
Aplicável a: Todos os sites

StreamGrabber

A lightweight, powerful userscript for downloading HLS (.m3u8) video streams, video blobs, and direct videos directly from your browser. Supports mobile and desktop, with pause/resume functionality, AES-128 encryption, fMP4, and minimal UI.

Installation

Requirements

A userscript manager extension:
- Tampermonkey (recommended for Chrome/Chromium)
- Greasemonkey (for Firefox)
- Violentmonkey (alternative option)

Install Steps

Install a userscript manager extension in your browser
Click here to install the script
Confirm installation when prompted by your userscript manager

The script will automatically activate on all websites.

Usage

Navigate to any webpage containing video content
If supported media is detected, a floating download button will appear in the bottom-right corner
Click the download button to open the media selection dialog
Choose from available video streams or direct video files
For HLS streams with multiple qualities, select your preferred resolution
Monitor download progress in the floating progress card
Downloads support pause/resume functionality

Advanced Features

Alt+Click: When exactly one media item is detected, alt-clicking the download button will start download immediately without showing the selection dialog
Copy URLs: Click the copy button next to any media item to copy its URL to clipboard
Filter Options: Toggle "Exclude small (< 1MB)" to filter out thumbnails or ads
Progress Controls: Pause/resume downloads, hide/show progress cards, or cancel downloads

Features

Automatic Detection: Automatically detects m3u8 streams and video blobs on any website
Multi-Quality Support: Choose from available video quality variants for HLS streams
Encryption Support: Handles AES-128 encrypted streams
Format Support: Supports both fragmented MP4 (fMP4) and MPEG-TS formats
Progress Tracking: Real-time download progress with pause/resume functionality
Video.js Integration: Adds download buttons to Video.js players
Cross-Origin Support: Uses GM_xmlhttpRequest for reliable cross-domain requests
Modern File APIs: Utilizes File System Access API when available, falls back to blob downloads
Size Estimation: Smart size estimation for HLS streams using bandwidth data or byte ranges
Smart Filtering: Option to exclude small files (< 1 MB) to filter out thumbnails/ads
Robust Error Handling: Automatic retry mechanism with configurable limits
Clean UI: Floating download button with progress cards and variant picker
Concurrent Downloads: Optimized concurrent segment downloading for faster HLS downloads