When comparing Easy Youtube Video Downloader vs Video DownloadHelper, the Slant community recommends Video DownloadHelper for most people. In the question“What are the best Firefox add-ons?” Video DownloadHelper is ranked 18th while Easy Youtube Video Downloader is ranked 19th. The most important reason people chose Video DownloadHelper is:
A number of "YouTube downloaders" will only work with YouTube. Others (maybe the same ones!) no longer work with YouTube after changes were made in the YouTube interface and encryption. But VDH just keeps on working!
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Pros
Pro 1-Click direct download from youtube page itself
No need to copy-paste url to other app or type anything before the url, single-click to the format of your choice and your "youtube video" or "youtube video to mp3" download starts instantly.
Pro Supports 1080p Full-HD video and high-quality mp3 downloads
Download Youtube videos in 1920 x 1080 Full-HD MP4, FLV, 3GP and MP3 High-quality (256kbps) formats.
Pro Cross-platform
This cross-platform, cross-browser web-browser addon lets you download videos right from the Youtube page while you surf and enjoy.
Pro Clean interface
The download button is elegant and non-intrusive. Shows only what's needed, and does not clutter the interface with unwanted details, unnecessary options and configurations.
Pro No advertisements
Pro Works with YouTube videos, and most other sites too
A number of "YouTube downloaders" will only work with YouTube. Others (maybe the same ones!) no longer work with YouTube after changes were made in the YouTube interface and encryption. But VDH just keeps on working!
Pro Rarely fails to "see" and download video and audio streams
Many similar tools will often fail to download certain video formats or DRM protected streams. VDH fails to download 5% or less of video streams.
Pro Conversion license is very affordable ($15 lifetime license)
Pro Automatic conversion rules are very handy
Cons
Con Full HD and mp3 support is paywalled
While this used to be a free app, recent YouTube changes now require a server in between to convert 1080p and mp3 formats and the author is asking for a one-time "Donation" of the user to activate the 1080p Full HD and mp3 format downloading.
Con Pricy
Con UI for advanced features is a little hard to navigate
There are much worse UIs though.