Hi,
You may just record a small rosbag, then copy it on PC with rtabmap_ros installed.
Example recording on Odroid:
$ roslaunch openni_launch openni.launch depth_registration:=true
$ rosbag record -O recorded.bag /tf /camera/rgb/image_rect_color /camera/depth_registered/image_raw /camera/rgb/camera_info
** copy recorded.bag on PC **
On PC, to replay the bag:
$ roslaunch rtabmap_ros rtabmap.launch rtabmap_args:="--delete_db_on_start" use_sim_time:=true
$ rosbag play --clock recorded.bag
cheers,
Mathieu