Yes, you generally need permission to share Facebook Video Downloader, especially if they belong to someone else. Facebook’s terms prohibit unauthorized copying, distribution, or use of content without the creator’s consent. Public videos may be easier to download, but sharing them outside the platform without credit or permission can still lead to copyright infringement.
For personal offline viewing, downloading is usually fine, but any commercial or public use should involve getting explicit consent from the uploader. Always respect privacy settings—never download or share videos from private profiles or closed groups without the owner’s permission.