Use to control speed on HTML5 video and audio streams.

Can add SRT files as WEBVTT tracks, style the subtitles and set the delay so that they are in sync (tip: use the console log to help you).

This extension is safe to use in incognito mode as the only data it stores is the settings; I recommend enabling it for file URLs.

You can add a colour matrix and other video CSS, but there is one enabled by default that makes greens and pinks more realistic.

Changelog:

17/04/2019 - Fixed a bug where keys set as shortcuts could not be typed in text boxes.
13/04/2019 - Now removes obsolete instances and fixes bug were arrow keys were disabled in the YouTube search bar.
01/04/2019 - Disables undesired default shortcuts. 
25/03/2019 - Amended default colour matrix (makes black truly black).
20/03/2019 - Amended default colour matrix.
03/03/2019 - Fixed subtitle text area updating on file selection.
02/03/2019 - Fixed subtitle toggling.
02/02/2019 - Amendment to subtitle balancing.
01/02/2019 - Fixed subtitle balancing.
26/01/2019 - Only specified shortcuts will override native shortcuts.