read rosbag file without closing it

asked 2019-10-09 18:01:24 -0600

sai krishna gravatar image

updated 2022-06-11 08:52:20 -0600

lucasw gravatar image

Hello,

Is there any way in either python or c++ to access rosbag file data without stopping or closing it as opening a bag file while it is recording data throws a ROSBagUndexedException and corrupts the bag file in most of the cases.

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Afaik: no, this is not possible.

The (final) index is written upon closure, and reading a bag files requires the indices to be present.

gvdhoorn gravatar image gvdhoorn  ( 2019-10-10 01:14:12 -0600 )edit

rosbag record --split will help you, you won't be able to read the very latest bag but there can be recent ones closed out and indexed trailing behind it

http://wiki.ros.org/rosbag/Commandlin...

lucasw gravatar image lucasw  ( 2022-06-11 08:56:19 -0600 )edit
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