README.md

ros-video-grabber

This is a package of ROS nodes for grabbing videos.

Requirements

• A video file
• A csv file containing list of timestamps of the video frames

Note that the number of frames in the video and rows in the csv file must be the same.

Usage

1. Make

$ cd src
$ catkin_init_workspace
$ cd ..
$ rosdep install --from-paths src --ignore-src -r -y
$ catkin_make

2. Source setup.bash

$ source devel/setup.bash

3. Execute video-grabber with either rosrun or roslaunch

3.1 Execute video-grabber with rosrun

$ rosrun video_grabber video_grabber_node \
    _path_to_video:=<path to video> \
    _path_to_timestamp:=<path to timestamp csv> \
    _frame_id:=<frame id to publish (default: camera)> \
    _seek_frequency:=<refresh rate (should be higher than video FPS. default: 60)>

3.1 Execute video-grabber with rosrun

$ roslaunch video_grabber sample.launch \
    path_to_video:=<path to video> \
    path_to_timestamp:=<path to timestamp csv> \
    frame_id:=<frame id to publish (default: camera)> \
    seek_frequency:=<refresh rate (should be higher than video FPS. default: 60)>

Video frames will be published with topic name /video_grabber .