YouTube Downloader

A browser extension for downloading videos from YouTube

Made by avi12

Supported browsers

NOTICE: This extension will only work until June 2024, so hurry up!
If you still want to use it afterwards, you can use Brave which has a longer Manifest V2 support
If you can, I'd love if you can port it to Manifest V3!

Screenshots

For videos that aren't in the Music category:

For videos in the Music category:

In /playlist:

Pop-up page

Installation

Download from one of: AdFly, Linkshrink, AdPayLink, or direct

Video installation tutorials:

After installing, reload YouTube tabs

Features

• Download videos from /watch & /playlist, either as videos, audio tracks or audio-less videos

• Viewing the download progress

• All downloads are cancelable

• Always keep in mind:

  • Videos with audio tracks will always be downloaded one-by-one
  • Audio tracks or audio-less videos will always be downloaded in parallel

• Via the pop-up page, you can manage downloads, customize the file extensions and change the default video quality

• Useful tooltips when hovering over certain buttons, notably individual downloads and the playlist download button

• For videos on /watch:

  • Clicking to download a video whose category isn't "Music" will:
    • begin downloading in the currently-selected quality (unless customized) if the queue is empty
    • if the queue isn't empty, it will be pushed to the queue
  • Otherwise, it will be downloaded as an audio track immediately

• In playlists on /playlist:

  • When downloading an individual video:
    • If you're downloading it as a video, yet you already started downloading a videos that you selected - it will abort their downloads and instead begin downloading the video you just clicked Download on
    • Otherwise, it will start downloading immediately as an audio track
  • When selecting multiple videos and clicking the Download button that's tied to the playlist, they'll download one-by-one
  • Download a whole playlist with a single click, using "Download all when ready"
  • Set playlist-wide options (download all videos as videos / audio-less videos / audio tracks; use the same file extension for all items)

• Pop-up:

  • Options:
    • Control whether to download a video in quality X/the highest available, or download according to the selected quality
    • Allow specifying a custom file extension for videos and audios
    • If you have YouTube Premium ,remove the native Download button

To-dos (when I have time)

• Pop-up:
  • Options:
    • Allow downloading playlists as ZIP
    • Allow downloading playlists to a subdirectory whose name is the playlist's name
• If the video has Clip, opening the Clip modal will allow specifying which portion of the video to download (including the rich options, as mentioned above)

Known bugs

• When downloading video files that include audio, reordering them via the pop-up page will sometimes not correctly display right away the download / processing progress in the video's progress bar

Core packages/repositories used

1. ytdlr - for converting signature ciphers into downloadable URLs
2. FFmpeg - for combining video & audio into a single video file, and then providing it as a download
3. Vue.js - for the in-page UI interactivity
4. Svelte - for the pop-up page
5. Svelte Materialify - for using Material Design components in the pop-up page. It will be replaced by a different library when it becomes deprecated

Setting for development

1. Make sure to have Node.js and PNPM

2. pnpm i

3. Start Rollup for development

   pnpm dev

4. Test on Chrome/Chromium

   pnpm run-chromium