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Playback of rosbag with tf2-static transforms

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Hello ROS users, I've got a robot setup where (most) of the static transforms are defined by an URDF (which results in tf2-static tfs). During a testrun we recoded plenty of bag-files which where splitted after 1 min. The static transforms are only contained in the 1. bagfile. (1. Question) Is there a way to record splitted bagfiles with static-tfs, that the static-tfs are contained in each bag-file? Furthermore (2. question), if the bagfile containing the static-tfs is played, they are only received by rviz (and probably other nodes as well) if rviz was started prior the playback of the bag-file, which seems for me like a bug. Is there a solution to fix that (e.g. have rviz receiving the static-tfs even when its started lets say 2sec after the rosbag playback started)? regards
Tobias

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