Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

Have a look at the documentation in the ros wiki: rosbag:

-l NUM, --limit=NUM
     Only record NUM messages on each topic.

This is however not(!) what you really want to use as you will most likely not record the imu-message that belongs to the image-data as the imu (probably) will have a much higher frequency. A Time Synchronizer is a better choice.

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.