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A script to control video playback speed and navigation keys
// ==UserScript==
// @name OneKey Speed Control
// @namespace http://tampermonkey.net/
// @version 2024-03-03
// @description A script to control video playback speed and navigation keys
// @author ExistoT01
// @match https://*/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
const logPrefix = "[OKSC]: " //日志前缀
const TIME_UNIT = 10; //快进，倒带单位(s)
const RATE_UNIT = 0.25; //调整倍率单位
const RATE_MAX = 10; //最大播放速率
const RATE_MIN = 0.25; //最小播放速率
const LOCKED_SPEED = 3; //倍速播放速度
const TYPE_CHANGE_SPEED = 1; //类型1，改变视频播放速度
const TYPE_LOCK_SPEED = 2; //类型2，锁定倍速播放
const TYPE_CHANGE_PROGRESS_FORWORD = 3; //类型3，快进
const TYPE_CHANGE_PROGRESS_REWIND = 4; //类型4，倒退
const TYPE_PLAY = 5;
const TYPE_PAUSE = 6;
const KEY_INC_SPEED = 'x';
const KEY_DEC_SPEED = 'z';
const KEY_LOCK_SPEED = 'u';
const KEY_REWIND = 'j';
const KEY_FORWORD = 'l';
const KEY_PLAY_OR_PAUSE = 'k';
const MSG_VIDEO_NOT_FOUND = 'video element not found!';
const HOSTNAME_YOUTUBE = 'www.youtube.com';
const HOSTNAME_DISNEYPLUS = 'www.disneyplus.com';
const VIDEO_SELECTOR = 'video';
const VIDEO_SELECTOR_DISNEYPLUS = '#hivePlayer';
let originalSpeed;
let isSpeedLocked = false;
let timeoutId;
// Your code here...
document.addEventListener('keydown', function(event) {
// console.log(logPrefix, 'keydown', event.key);
if (isSpeedLocked) {
return;
}
let video = getVideo();
if (!video) return;
// Increase speed
if (event.key === KEY_INC_SPEED) {
video.playbackRate = Math.min(video.playbackRate + RATE_UNIT, RATE_MAX);
showNotification(TYPE_CHANGE_SPEED, video.playbackRate);
return;
}
// Decrease speed
else if (event.key === KEY_DEC_SPEED) {
video.playbackRate = Math.max(video.playbackRate - RATE_UNIT, RATE_MIN);
showNotification(TYPE_CHANGE_SPEED, video.playbackRate);
return;
}
// Lock speed
else if (event.key === KEY_LOCK_SPEED) {
isSpeedLocked = true;
originalSpeed = video.playbackRate;
video.playbackRate = LOCKED_SPEED;
clearTimeout(timeoutId);
showNotification(TYPE_LOCK_SPEED, LOCKED_SPEED);
return;
}
// Youtube already has this feature
if (window.location.hostname !== HOSTNAME_YOUTUBE) {
switch (event.key) {
case KEY_REWIND: // Jump back 10 seconds
video.currentTime = Math.max(video.currentTime - TIME_UNIT, 0);
showNotification(TYPE_CHANGE_PROGRESS_REWIND);
break;
case KEY_PLAY_OR_PAUSE: // Toggle play/pause
if (video.paused) {
video.play();
showNotification(TYPE_PLAY, 0);
} else {
video.pause();
showNotification(TYPE_PAUSE, 0);
}
break;
case KEY_FORWORD: // Jump forward 10 seconds
video.currentTime = Math.min(video.currentTime + TIME_UNIT, video.duration);
showNotification(TYPE_CHANGE_PROGRESS_FORWORD);
break;
}
}
});
document.addEventListener('keyup', function(event) {
// console.log(logPrefix, 'keyup', event.key);
isSpeedLocked = false;
let video = getVideo();
if (!video) return;
if (event.key === KEY_LOCK_SPEED) {
video.playbackRate = originalSpeed;
notification.style.display = 'none';
showNotification(TYPE_CHANGE_SPEED, originalSpeed);
}
})
// CSS for the notification
var style = document.createElement('style');
style.type = 'text/css';
// Use a text node to safely insert CSS rules
style.appendChild(document.createTextNode(`.speed-notification {
position: fixed;
bottom: 50px;
right: 20px;
background-color: black;
color: white;
padding: 8px;
border-radius: 4px;
z-index: 9999999;
display: none;
}`));
document.head.appendChild(style);
// Create the notification element
var notification = document.createElement('div');
notification.className = 'speed-notification';
document.body.appendChild(notification);
// Function to show notification
function showNotification(type, speed) {
if (type === TYPE_LOCK_SPEED) {
notification.textContent = 'Speed: ' + LOCKED_SPEED + 'x';
notification.style.display = 'block';
return;
}
if (type === TYPE_CHANGE_SPEED) {
notification.textContent = 'Speed: ' + speed + 'x';
} else if (type === TYPE_CHANGE_PROGRESS_FORWORD) {
notification.textContent = '-->>';
} else if (type === TYPE_CHANGE_PROGRESS_REWIND) {
notification.textContent = '<<--';
} else if (type === TYPE_PLAY) {
notification.textContent = ' || ';
} else if (type === TYPE_PAUSE) {
notification.textContent = ' |> ';
}
notification.style.display = 'block';
// Hide the notification after 2 seconds
clearTimeout(timeoutId);
timeoutId = setTimeout(function() {
notification.style.display = 'none';
}, 2000);
}
// function to get video element
function getVideo() {
let video;
// Disney+ odd version
// if (window.location.hostname === HOSTNAME_DISNEYPLUS) {
// let player = document.querySelector('disney-web-player');
// if (!player) return;
// video = player.shadowRoot.querySelector('video');
// }
// else {
// video = document.querySelector('video');
// }
if (window.location.hostname === HOSTNAME_DISNEYPLUS) {
video = document.querySelector(VIDEO_SELECTOR_DISNEYPLUS);
}
else {
video = document.querySelector(VIDEO_SELECTOR);
}
if (!video) {
console.log(logPrefix, MSG_VIDEO_NOT_FOUND);
return;
}
return video;
}
})();