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1. Introduction Video DownloadHelper is one of the most popular browser extensions for downloading online video and audio content. Originally developed for Firefox, it is also available for Chromium-based browsers, including Google Chrome. While the core extension is free, advanced features—such as downloading combined streams (video + audio) and converting formats—require a paid companion application known as DownloadHelper CoApp , which is activated via a Lifetime License .

| Alternative | Cost | Chrome Support | Merges Streams? | |-------------|------|----------------|-----------------| | yt-dlp (command line) | Free | N/A (standalone) | Yes | | 4K Video Downloader | Freemium (paid license) | No (standalone) | Yes | | JDownloader 2 | Free (open source) | No (standalone) | Yes | | StreamFab | Expensive ($100+) | No | Yes (supports some DRM) |