8.3. Provide a way of controlling the progress and volume of all video and audio content
The following controls must be included with all video and audio content:
Progress controls, play/pause button and stop button.
Sound controls: mute/unmute sound button and volume control button.
It is very useful to display information concerning the current position and total duration of the video or the audio content, and a method of moving forwards or backwards in the video (progress bar, fast forward/fast backward buttons, etc.).