This PHP video downloader script allows you to download from 40 websites in one click. You also get good support and regularly updated software. And the YouTube video downloader script can load videos from 144P 15 FPS to 4K 60 FPS and allows you to download at high speed by removing YouTube bandwidth speed limit. This is a WordPress based script, so you get a WordPress plugin and theme. You can use any ad publisher or selected URL shortening services to monetize your site.

1. Support for Multiple Platforms: The script should support downloading videos from a wide range of popular video-sharing platforms, including YouTube, Vimeo, Dailymotion, Facebook, Instagram, and more.

2. Video Quality Options: Users should be able to choose the quality of the downloaded video, such as HD, SD, or other available resolutions.

3. Audio Extraction: The script should have the capability to extract audio from videos and save it in formats like MP3 or M4A.

4. Batch Download: Users should be able to download multiple videos simultaneously, which can save a lot of time.

5. Browser Extensions: Some scripts offer browser extensions that make it even easier for users to download videos without leaving the website they are on.

6. Customizable Output Settings: Users should have the option to choose where to save downloaded videos on their devices and select the format in which they want the video to be saved.

7. Built-in Search: Some scripts include a search feature that allows users to search for videos directly within the script's interface.

8. Download History: A history feature can help users keep track of their downloads and easily find previously downloaded videos.

9. Download Progress Tracking: Users should be able to see the progress of their downloads, including the time remaining and download speed.

10. Video Preview: Some scripts offer a preview feature, allowing users to watch a video before downloading it.

11. User Accounts: For a more advanced script, you might include user account management and the ability for users to create playlists or mark favorite videos.

12. Ad Blocker: Integration with ad-blocker tools to enhance the user experience and prevent intrusive ads.

13. API Integration: Integration with APIs from video-sharing platforms to ensure compatibility and reliable downloads.

14. Responsive Design: A mobile-friendly and responsive design is crucial for users who want to download videos on various devices.

15. Documentation and Support: Provide clear documentation and customer support to assist users in using the script effectively.

16. Regular Updates: Regularly update the script to ensure it remains compatible with changes on video-sharing platforms and to fix any bugs or security vulnerabilities.

17. Legal Compliance: Ensure the script complies with copyright and intellectual property laws to avoid legal issues.