I encountered the same problem when creating a recipe video for my family. The footage was ready, but it needed narration to make sense. After some searching, I found https://www.screencapture.com/add-audio-to-video-online/ . The tool is designed specifically for adding audio tracks, voice recordings, or music to existing videos through a simple online interface. I uploaded the video, recorded my explanations, and synchronized everything without any editing experience. The process was quick and intuitive. The final tutorial looked much more professional, and I was genuinely impressed with the results