That said, if you need a paper topic or want to write a research paper on the broader subject of YouTube video downloading/conversion (technical, legal, or ethical aspects), here’s a structured outline and relevant academic angles you can use:
Or for audio to MP3:
Experts often suggest using verified software over web-based tools to avoid browser-based security threats: For Desktop 4K Video Downloader download video youtube to 3gp mp4 mp3 - wapbom.com