| description: Explore Ultralytics documentation on prediction function starters & register trackers. Understand our code & its applications better. | |
| keywords: Ultralytics, YOLO, on predict start, register tracker, prediction functions, documentation | |
| # Reference for `ultralytics/trackers/track.py` | |
| !!! Note | |
| This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/trackers/track.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/trackers/track.py). If you spot a problem please help fix it by [contributing](https://docs.ultralytics.com/help/contributing/) a [Pull Request](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/trackers/track.py) 🛠️. Thank you 🙏! | |
| <br><br> | |
| ## ::: ultralytics.trackers.track.on_predict_start | |
| <br><br> | |
| ## ::: ultralytics.trackers.track.on_predict_postprocess_end | |
| <br><br> | |
| ## ::: ultralytics.trackers.track.register_tracker | |
| <br><br> | |