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rosbag_timing_inspector

  • Software
  • Middleware
  • Tool

A GUI tool for visualizing and analyzing message timing in ROS 2 bag files (.mcap or .db3). It reads only timestamps and topic names, so bags with custom message types still open.

Made by The MOLA SLAM framework, Spain (checked on github.com/MOLAorg (opens in a new tab)).

Source on GitHub: github.com/MOLAorg/rosbag_timing_inspector (opens in a new tab). Facts read at commit 89ae3aa (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 89ae3aa (opens in a new tab), on 16 Oct 2026.

Commercial use
Yes

What it does

  • Timeline tab shows a zoomable scatter plot with time on the X axis and one lane per topic, each dot being one message.
  • Measure mode places two vertical markers on the timeline to read the time difference between them.
  • Histograms and Stats tab shows per-topic inter-message interval histograms and a table of count, mean, std, min and max in milliseconds.
  • Per-topic visibility and color can be toggled in the left panel.
  • Bags can be passed on the command line or opened from a File menu inside the application.

Written by Robotheca from the project's README (opens in a new tab) at commit 89ae3aa.

Getting started

Difficulty
Beginner
Hardware it needs, as the project states it
It needs the libglfw3-dev system package and the rosbag2_storage_mcap and rosbag2_storage_sqlite3 plugins.

Maintenance

Status
Active: a commit in the last 90 days
Newest commit
28 Sept 2026 on develop
Latest release
None published on GitHub

Checked on GitHub on 16 Oct 2026.

Links

Robots that can run 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.