rosbag record image and export to video

gistfile1.txt

$ rosbag record -O test2.bag /image_color

- Create a file export_img_rosbag.launch:

<launch>
  <node pkg="rosbag" type="play" name="rosbag" args="-d 2 $(find carla_ros)/launch/test.bag"/>
  <node name="extract" pkg="image_view" type="extract_images" respawn="false" output="screen" cwd="ROS_HOME">
    <remap from="image" to="/image_color"/>
  </node>
</launch>




$ roslaunch export_img_rosbag.launch
mkdir test
mv ~/.ros/frame*.jpg test/
cd test
ffmpeg -framerate 1 -i frame%04d.jpg -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p -f rawvideo output.h264