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YouTube Sequencer

The YouTube Sequencer Chrome Extension offers an interactive tool for customizing video playback speeds and sequences on YouTube.

📄 Tutorial

📺 Video tutorial

📺 Demo

I initially began this project as a simple keystroke emulator for creating sequences from YouTube videos, but it has evolved into a more complex tool. First prototype was made years ago using puredata.

This extension allows for intricate control over YouTube video playback, enabling users to select specific slices of a video to play and adjust the sequence tempo. Users can also change the current note length (ranging from 1/16t to 1/2d) and modify the playback speed, which is mapped exponentially from 0.0625 to 16 over a range of 0 to 100. Sequences are persistent, meaning they can be saved and accessed even after a page reload.

Caution

Currently, this project is in the proof-of-concept stage, and as such, encountering bugs is expected.

Tip

If you're having trouble locating the sequencer UI, a page reload might resolve the issue.

Installation

  • Clone this repo or download a zip of the repo and unzip it on your computer.
  • Open the extensions page in your browser: chrome://extensions. This link works on any chromium-based browser.
  • Toggle the "developer mode" on. This is usually a toggle button at the top right of the extensions page.
  • Click the button load unpacked extension.
  • In the window that pops up, select the folder that contains repo, then click ok.
  • Done! A new extension called YouTube Sequencer should have appeared in the list.

TODO

  • Port to Firefox.
  • Replace keystroke emulation for controlling video playback with direct manipulation of the video.currentTime property.
  • Implement functionality to create custom slices of the video based on normalized or absolute time intervals.
  • Save and load "dialogues". Save multiple sequences, store the video id sequence made for, comments and slices data.
  • Create a bot that visits the specified video, downloads it, analyzes the audio data to find transients, and posts a comment with the timecodes of these transients.
  • Transition the extension's architecture from using a fully injected script to incorporating a side panel interface.

Links