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Lightweight HLS/Video downloader. Pause/Resume. AES-128. fMP4. Mobile + Desktop.
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DEminified the script
# Universal M3U8 Downloader (Ultimate Edition)A powerful, optimized, and user-friendly userscript for downloading HLS (.m3u8) video streams and direct video blobs directly from your browser.## 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
