Not yet, AV1

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Not yet, AV1",
  "version": "1.0.0",
  "description": "Extremely lightweight Chrome plugin to disable AV1 on YouTube and other sites.",
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube-nocookie.com/*",
        "*://*.youtu.be/*"
      ],
      "js": [
        "src/inject/inject.js",
        "src/inject/content_script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "homepage_url": "https://github.com/Shimmermare/NotYetAV1"
}