Universal URL Video Trimmer

I want to launch a lightweight web application that lets anyone paste a public video URL—whether it points to YouTube, Vimeo, or an independently-hosted file—and instantly trim the clip to the exact in- and out-points they need. After selecting the range in an on-page preview, the user should be able to download the result as a single MP4 file at the original resolution (no re-scaling unless the source demands it).

Behind the scenes you are free to use FFmpeg, yt-dl, Node.js, Python, or any stack you’re comfortable with, provided the process is automated, reliable, and keeps temporary files tidy. The front end can be vanilla JS or a modern framework; what matters is a responsive UI that works smoothly on desktop and mobile.

Deliverables
• A deployable web app (code + brief README)
• Clean, intuitive trimming interface with live preview
• Server-side routine that fetches the source video from any reachable URL, clips it, and returns an MP4
• Basic error handling for unsupported or private links
• Instructions so I can run it on a standard VPS or Docker container

The project is finished once I can paste a URL, set start/stop times, hit “Trim,” and receive the new MP4 without quality loss or audio-video drift.