The YouTube Sequencer Chrome Extension offers an interactive tool for customizing video playback speeds and sequences on YouTube.
📄 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.
- 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.
- Port to Firefox.
- Replace keystroke emulation for controlling video playback with direct manipulation of the
video.currentTimeproperty. - 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.