# Open-source tool roboreview cuts factory video annotation from 40-50 minutes to 5 minutes

- Source: Reddit r/robotics
- Published: 2026-10-20T07:28:53.000Z
- RoboHot: https://robohot.news/en/items/o3xt0bjzrxvrsa903fwyoh8se
- Original: https://www.reddit.com/r/robotics/comments/1xalost/built_an_open_source_ecosystem_to_label_factory/

## Summary

An AI engineer has open-sourced roboreview, a tool for annotating factory videos captured by head-mounted cameras for robot imitation learning, cutting the annotation time for a 5-minute clip from 40-50 minutes to 5 minutes. The workflow first uses a small model to predict each step, then confirms or fine-tunes the start and end points one by one in a review app; the review results are exported as training data and used to retrain the model.