Hung127/football-cv ? reverse-engineered prompt

Build me a Python app that can take a football match video and help analyze it with computer vision.

I want it to detect the main things on the pitch, track them across frames, and keep players separated into teams as best it can. It should show the video with the detections drawn on top, and make it easy to run from one main script. If there’s a simple way to include training or fine tuning for the model, add that too, but keep the setup straightforward and beginner friendly.

Please organize the code so the tracking, team grouping, training, and general helper logic are cleanly separated. I’d like it to be something I can learn from, so readable code matters more than fancy extras. If you need to check current library docs or examples online, go ahead. Also include clear instructions for installing what’s needed and how to run it on a sample video.