ros2_unbag
- Software
- Middleware
- Tool
A ROS 2 tool with a GUI and CLI that exports topics from .db3 or .mcap bag files into formats such as CSV, JSON, PCD and images. It supports custom export routines and processors.
Made by Institut für Kraftfahrzeuge, RWTH Aachen, ika, Germany (checked on github.com/ika-rwth-aachen (opens in a new tab)).
Source on GitHub: github.com/ika-rwth-aachen/ros2_unbag (opens in a new tab). Facts read at commit aa2a68c (opens in a new tab).
Licenses
- Code
- MIT (opens in a new tab)
Read by Robotheca from LICENSE (opens in a new tab) (MIT) at commit aa2a68c (opens in a new tab), on 16 Oct 2026.
- Commercial use
- Yes
What it does
- Provides an interactive GUI for exploring bag contents and configuring exports.
- Offers a ros2 unbag CLI plugin for automation and scripting, with JSON config files for repeatable runs.
- Includes export routines for all message types, and custom export plugins can be added for any ROS 2 message or format.
- Custom processors can filter, transform or enrich messages before export.
- Optional resampling time-aligns topics to a master topic using 'last' or 'nearest' association.
- Can run multiple worker processes for export, with adjustable CPU usage.
Written by Robotheca from the project's README (opens in a new tab) at commit aa2a68c.
Getting started
- Difficulty
- Beginner
- How to start
- The project's README (opens in a new tab)
Maintenance
- Status
- Active: a commit in the last 90 days
- Newest commit
- 15 Oct 2026 on main
- Latest release
- ros2_unbag v1.3.1 (20 Aug 2026)
Checked on GitHub on 16 Oct 2026.
Links
Robots on Robotheca that use it
No robot on Robotheca is linked to it yet. Links come from a robot's robot.yaml, from its dependency files read as text, or from Robotheca's editors.
Robotheca lists software as a reference: nothing is hosted or run here, and every fact links to where it was read.