This blog discusses the methods to fix the error and to make the videos playable again. The Greasemonkey script mentioned in above URL doesn't work, however, I'm currently using this firefox add-on which works just fine and adds a pretty download button below the video frame.Summary: Have you come across the HTML5 video ‘File not found’ error while playing videos on YouTube or any other website? The error usually occurs when your browser does not support the HTML5 format codecs or doesn’t have the proper video codec installed. And good thing is that the this Greasemonkey script is available for other web browsers as well. In case of download manager for Ubuntu, I'll recommend DownThemAll add-on for Firefox (default web browser for Ubuntu).Īnd for adding 'Download' button in YouTube, first you'll need to install Greasemonkey in the Firefox and then, use this userscript to add that 'awesome' button in YouTube.

Using something like Greasemonkey script that will add a 'Download' button underneath any video you see in YouTube (Preferred for Flash videos, as they'll not have direct links).

Using download manager and add video urls (HTML 5 Videos will give you direct URLs).

In case you're fond of downloading the video you see, whether on YouTube (Mostly based on Flash) or any other site (in case of HTML5 videos), you have two options, Just right click the video frame that is playing the video, and select 'Copy Video URL' (depending on the browser you use) and paste the link in the address bar, and the browser should ask you to save the file.

Now go to your home ( ~) directory and pick them up, so you can work with the reference in one hand and the terminal in the other. Youtube-dl -help > 'youtube-dl quick help.txt' Update package without apt: youtube-dl -UĪnd if you want to keep its manual in a text file (recommended), type this: man youtube-dl > 'youtube-dl manpage.txt' Sudo chmod a+rx /usr/local/bin/youtube-dl Or if you don't want to add a PPA, install latest version: sudo curl -o /usr/local/bin/youtube-dl It can be installed from WebUpd8's PPA: sudo add-apt-repository ppa:nilarimogard/webupd8 As I said before, is one of the most powerful CLI tools to download videos from almost anywhere in the web. Its GUI version is also available through a WebUpd8's PPA, but is not that powerful as its backend. Not the easiest way but it's one of the most effective.ĮDIT: Just discovered youtube-dl command. Its up-to-date addon system allows to select available quality and filetype easily (video-audio/audio only). With JDownloader you can download almost every kind of content available on the web.

Chrome download html5 video