Excelente aplicacion, te permite descargar con varias opciones de calidad..
More details about Video DownloadHelper
“The best Web video downloader! Video Download Helper Firefox extension now available!
Save to your local hard drive the videos that are playing on a web page
Support for HLS streamed videos
Support for DASH videos
Download image galleries
Smart naming of video files
Blacklist domains for hiding ads from videos detected
control maximum concurrent downloads
Multiple options for fine-grained filtering videos available for download
Interface that is highly customizable
Convert downloaded or previously downloaded videos to almost every format
It works with Windows, Mac, and Linux
Not all streaming protocols or video conversions can be supported without the need for a companion app. The browsers (neither Firefox nor Chrome) do not have the required interface. The add-on manages the companion application completely and you don’t need to worry about it once installed. Open-source and free, the companion application is available. It has been downloaded over 10,000,000 times.
Please note that the Chrome version does not allow you to download YouTube videos due to restrictions in Google Web Store. For this purpose, use the Firefox version.”