Modify playbackRate for all video / audio elements on the page.

playbackrate.js

// playbackrate.js
// https://github.com/bgrins/devtools-snippets
// Increase playbackRate for all video / audio elements on the page.

(function() {
	console.group('playbackRate');
		
	[].forEach.call(document.querySelectorAll("video,audio"), function(media) {
        
        var splitPath = media.src.split('/');
		var srcName = media.id +'_'+ splitPath[splitPath.length-1];
		
		media.defaultPlaybackRate = 32;
		media.playbackRate = 32;

		console.log('playbackRate for "'+ srcName +'" set to '+ media.playbackRate);


	});

	console.groupEnd('playbackRate');
})();