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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "version": "0.4.7",
  "name": "MediaPlayer - Video and Audio Player",
  "description": "__MSG_description__",
  "default_locale": "en",
  "background": {
    "service_worker": "worker.js"
  },
  "offline_enabled": true,
  "permissions": [
    "storage",
    "contextMenus",
    "notifications",
    "declarativeNetRequestWithHostAccess"
  ],
  "optional_permissions": [
    "activeTab",
    "scripting"
  ],
  "optional_host_permissions": [
    "*://*/*"
  ],
  "action": {},
  "icons": {
    "16": "/data/icons/16.png",
    "32": "/data/icons/32.png",
    "48": "/data/icons/48.png",
    "64": "/data/icons/64.png",
    "128": "/data/icons/128.png",
    "256": "/data/icons/256.png",
    "512": "/data/icons/512.png"
  },
  "commands": {
    "_execute_action": {},
    "previous-track": {
      "description": "Previous Track"
    },
    "next-track": {
      "description": "Next Track"
    },
    "toggle-play": {
      "description": "Toggle Play/Pause"
    }
  },
  "file_handlers": [
    {
      "action": "/file_handlers/index.html",
      "name": "Open with MediaPlayer",
      "accept": {
        "video/avi": [
          ".avi"
        ],
        "video/mp4": [
          ".mp4"
        ],
        "video/webm": [
          ".webm"
        ],
        "video/x-flv": [
          ".flv"
        ],
        "video/quicktime": [
          ".mov"
        ],
        "video/ogg": [
          ".ogv"
        ],
        "video/3gpp": [
          ".3gp"
        ],
        "video/mpeg": [
          ".mpg"
        ],
        "video/x-ms-wmv": [
          ".wmv"
        ],
        "application/x-shockwave-flash": [
          ".swf"
        ],
        "video/x-matroska": [
          ".mkv"
        ],
        "video/dvd": [
          ".vob"
        ],
        "audio/pcm": [
          ".pcm"
        ],
        "audio/wav": [
          ".wav"
        ],
        "audio/aac": [
          ".aac"
        ],
        "audio/ogg": [
          ".ogg"
        ],
        "audio/x-ms-wma": [
          ".wma"
        ],
        "audio/flac": [
          ".flac"
        ],
        "audio/midi": [
          ".mid"
        ],
        "audio/x-matroska": [
          ".mka"
        ],
        "audio/mp4": [
          ".m4a"
        ],
        "audio/voc": [
          ".voc"
        ],
        "audio/mpeg": [
          ".mp3"
        ],
        "application/vnd.apple.mpegurl": [
          ".m3u8"
        ]
      },
      "launch_type": "single-client"
    }
  ],
  "homepage_url": "https://webextension.org/listing/the-media-player.html"
}