I have successfully record the bag file of realsense camera(D435i) topic using:

ros2 bag record /camera/color/image_raw

when I use ros2 bag play rosbag2_file to play this bag file,I use ros2 topic hz /camera/color/image_raw to check the fps of the topic, the average rate only have about 8.

No doubt, I checked the fps of the same topic when directly launch the realsense node.It's about 20.

There were something wrong about the ros2 bag record?

Thanks.