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How to speed up Youtube videos more than 2x

 in Applications  tagged browser / console / speed / youtube by

Using the playbackRate command to adjust video playback speed on YouTube slightly differs from using it on a standard HTML video element. This is because YouTube uses its player interface, built on top of the HTML5 video API but includes additional features and customizations.

Here’s a step-by-step guide on how to use the playbackRate command on YouTube:

Open YouTube and Select a Video: Navigate to YouTube and open the video you want to adjust.

Access the Browser Console:

  • Open Developer Tools in your browser. This is usually done by right-clicking on the page and selecting “Inspect,” or by pressing Ctrl+Shift+I (Windows/Linux) or Cmd+Option+I (Mac).
  • Switch to the “Console” tab.

Use the Correct JavaScript Command:

  • On YouTube, the video player element can be accessed differently. The command to adjust the playback speed might look like this:
  • document.querySelector('video').playbackRate = X;
  • Replace X with the desired playback speed. For example, 1.5 for 1.5x speed, or 0.75 for 75% of the normal speed.
document.querySelector('video').playbackRate = X;

For regular use, the built-in speed settings in the YouTube player (accessible via the gear icon in the player controls) are the recommended and easiest method to change playback speed. They provide a range of speed options in a user-friendly manner without the need for coding or console commands.

Understanding the playbackRate Command in JavaScript

document.getElementsByTagName("video")[0].playbackRate = X;

In the dynamic world of web development, JavaScript stands as a cornerstone technology, enabling developers and users to interact with web content in powerful ways. Among its many features is the ability to control video playback on web pages. This blog post delves into one such aspect: using the playbackRate command to control the speed of video playback.

What is playbackRate?

The playbackRate property in JavaScript is a feature of the HTML5 Video API. It allows developers to change the speed at which a video plays on a web page. The command document.getElementsByTagName("video")[0].playbackRate = X; is a practical implementation of this feature.

Breaking Down the Command

  • document: This is the root node of the HTML document.
  • getElementsByTagName("video"): This method returns a live HTMLCollection of elements with the specified tag name, in this case, “video”.
  • [0]: Since getElementsByTagName returns a collection, [0] accesses the first video element in the collection. If there are multiple videos, changing the index accesses different videos.
  • playbackRate: This property sets or returns the current playback speed of the video. 1 is the normal speed, values greater than 1 increase the speed, and values between 0 and 1 slow it down.
  • X: This represents the desired playback speed. For instance, setting X to 1.5 would make the video play at 1.5 times its normal speed.

Practical Use Cases

  • Educational Content: Speed up or slow down instructional videos to match the learner’s pace.
  • Accessibility: Adjust video speed for viewers who need more time to process visual content.
  • Entertainment: Speed through slow sections of videos or slow down for detailed analysis of scenes.

How to Implement

  1. Identify the Video: Ensure the video element is correctly targeted, especially in pages with multiple videos.
  2. Set the Playback Speed: Assign the desired speed to playbackRate. For example, document.getElementsByTagName("video")[0].playbackRate = 1.5; speeds up the first video by 50%.
  3. Test and Debug: Verify that the speed adjustment works across different browsers and devices.

Best Practices

  • User Control: Ideally, provide a user interface for viewers to adjust the speed according to their preference.
  • Browser Compatibility: Test the functionality in various browsers to ensure consistent behavior.
  • Fallbacks: In cases where playbackRate is not supported, consider alternative methods or inform the user.

Conclusion

The playbackRate property in JavaScript offers a simple yet powerful tool for enhancing the video viewing experience on web pages. By understanding and utilizing this command, developers can provide more dynamic and user-friendly web applications. Whether it’s for educational purposes, accessibility, or just personal preference, the ability to control video playback speed is an invaluable feature in today’s web landscape.

Manually Start an Infinite Scroll on a browser without using a plugin 1

 in FireFox  tagged browser / infinite scroll by

Recently, we needed to perform an infinite scroll on a website so that it would load all of its resources (both text and images). As the website was too long and it would take hours to manually scroll little by little, we used the Firefox console and JavaScript to perform the scroll without any additional plugins.

To do so we followed these steps: First we pressed the F12 button to enable the build-in console of Firefox.

Then, we typed allow pasting in the console to enable the ability to paste code directly into the console editor. Once we did that, we deleted the text allow pasting as it would create a problem once we run our code later on.

Following, we pasted the following code which both defines the function that performs the infinite scroll and the call that starts it.

//To avoid naming conflicts, give a non common names to the function and variable
var bytefreaksTimeout;

function bytefreaksScroll() {
    window.scrollBy(0,1);
    bytefreaksTimeout = setTimeout(bytefreaksScroll,10);
}

bytefreaksScroll();

As you will see in the following video, the scrolling was working flawlessly, once the scrolling reached the place we needed it to we used the following line in the console to stop the scrolling.

clearTimeout(bytefreaksTimeout);

How to use slack on a mobile device without the application (using a browser)

 in Other  tagged application / browser / mobile / slack by

Recently, we had to use slack to join a workspace but could not use their mobile application for reasons..

When we logged in to the workspace website it would only show us the settings of the workspace and it would prompt us to download the application.

The way we bypassed it was:

  1. to request “Desktop Site” from our browser,
  2. then navigate to the conversation channels and
  3. finally disable the “Desktop Site” mode so that we could get the responsive (mobile friendly) version on our screen!

It is not amazing but it works!

To request the “Desktop Site” from FireFox:

Some websites may appear or function differently from mobile to desktop. Firefox for Android lets you switch between desktop and mobile view:
– Open the page you want to view in Firefox.
– Tap the menu button.
– Toggle the switch next to Desktop site to turn it on and off.

From: http://mzl.la/1xKt6XL