I have 'Autoplay' set to 'block audio & video' in the permission settings. Sometimes (after playing media) I find media continuing to play in other tabs and would like a quick way to stop it. At those times, I find myself intuitively looking in the (right-click) context menu of the tab for an option to 'stop all media in this tab'. I feel like it should be alongside (or replace?) the 'mute tab' option.
Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.