Playback ROS1 bag files in ROS2

asked 2022-06-13 21:23:53 -0500

jclinton830
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What is the method to playback rosbag files recorded from ROS melodic in ROS2 Humble running on Ubuntu 22.04?

I know the existence of ros1_bridge, but it seems for this to work I must install ROS1 and ROS2 side by side in the same computer. With ROS2 Humble only being available for Ubuntu 22.04 and ROS1 Melodic not being supported in Ubuntu 22.04 make the usage of ros1_bridge impossible, right? Or am I missing something?

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answered 2022-06-13 21:59:50 -0500

jclinton830
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So I was right in my assumption but I found some information about this problem and a fix by following the how to guide on ROS2 humble documentation website. This shows how to use ros1_bridge with ROS2 Humble in Ubuntu 22.04. Below is the link to the solution. I hope a neater approach will be made possible soon.

https://docs.ros.org/en/humble/How-To...

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I know this problem has been solved but I think this rosbag would be of use to you in the future! It's a pure python library that provides read-write access to both ros1 bags and ros2 bags during their conversion!

qilin_gundamenjoyer ( 2022-06-16 00:45:59 -0500 )edit

Yes that is exactly what I need. Thanks.

jclinton830 ( 2022-06-16 22:37:57 -0500 )edit

I did try to install ros1_bridge and ros2 humble following the docmentation you posted. However after building ros2 from source and removing packages.ros.org from the sources.list, the error that should be fixed by removing the file from the source.list still keeps occuring: "The following packages have unmet dependecies: ros-core-dev: Depends: catkin but it is not installabe E: Unable to correct problems, you have held broken packages." How did you solve this?

SimJon1 ( 2023-05-09 05:21:29 -0500 )edit

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answered 2022-06-13 21:37:52 -0500

qilin_gundamenjoyer

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Install rosbag2 instead of rosbag for Humble since it is supported for ROS2. The installation guide is provided on the GitHub link here or below. After installation, type ros2 bag play <bag_file> in the terminal. Before installing bridges from ROS1 to ROS2, always check the ROS Index for the package you want to install for your distro.

rosbag2 repo: https://github.com/ros2/rosbag2

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Not exactly what I was looking for. I posted the answer above.

jclinton830 ( 2022-06-13 22:00:40 -0500 )edit

My bad. Glad you found the workaround.

qilin_gundamenjoyer ( 2022-06-14 12:25:21 -0500 )edit

Yeah I could have done what you suggested if the bag formats were the same, but they are not

jclinton830 ( 2022-06-14 22:20:37 -0500 )edit

Interesting that these two formats aren't the same. Knowing ROS, I intuitively thought that the format would have stayed the same for both ROS versions but I guess I'm missing something. Did you end up finding why the formats were different?

qilin_gundamenjoyer ( 2022-06-14 22:37:22 -0500 )edit

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Playback ROS1 bag files in ROS2

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