Examine source code of Local Video Player, Local Video Playlist Player

{
  "manifest_version": 3,
  "name": "Local Video & Folder Playlist Player",
  "version": "2.0",
  "author": "Nahom Ketema",
  "description": "A powerful video player that lets you open and play an entire folder of local video files directly in your browser.\n\nFeatures:\n- Playlist navigation\n- Automatic subtitle detection (.srt & .vtt)\n- Customizable caption sizes\n\nTo use subtitles: Place the subtitle file in the same folder as the video. The subtitle's filename must start with the video's filename (e.g., 'MyVideo_en.srt' will be matched with 'MyVideo.mp4'). This works for common patterns like 'VideoName_en.srt' or 'VideoName (English).vtt'.\n\nAll processing is done locally for privacy and security.",
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "Open Video Player"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; media-src 'self' blob:;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "video-player@example.com"
    }
  }
}