Recs.
Updated
Specs
Pros
Pro Enable reverse playlist control
Enables control over the order in which non-random playlists can be played, this excludes mix type playlists automatically generated by YouTube
Pro Enable blacklist
Blocks all videos from a channel on main pages, with the exception of Subscriptions and Channel pages. When enabled a cross button will become available on the video thumbnails, pressing it will automatically add the channel of that video to the blacklist and remove any videos belonging to that channel.
Pro Shift key toggles audio on video thumbnail playback
Allows audio control using the Shift key while playing videos by hovering the thumbnails. Pressing the Shift key will toggle the audio of the video. The audio always defaults to mute when a video thumbnail playback begins. The default volume for the video thumbnail playback is set to 50%.
Pro The extensions from the chrome store is also available on firefox & waterfox
If using a script manager it is usable across a whole range of browsers. There is a free script available to be used in browser script managers like ''Tampermonkey" which includes all functions of the addon through the script injections.
Cons
Con Iridium is currently on hold
The current build includes a bug which seems to break youtube functionality. However after a bit of searching, a solution can be found. Posted here to help others who might be debugging all their extensions for youtube not loading videos.
The solution for many seems to be to keep the autoplay function within Iridium settings ON.
Now your videos will most likely load and play again like they should.