从rosbag解析视频

1.使用的包

sudo apt-get install mjepgtools
sudo apt-get install ffmpeg

2.解析图片

roslaunch bag2jpg.launch

<launch>
      <node pkg="rosbag" type="play" name="rosbag" args="-d 2 /media/nvidia/'My Passport'/camera_rosbag/2021-08-19-15-20-12.bag"/>
      <node name="extract" pkg="image_view" type="extract_images" respawn="false" output="screen" cwd="ROS_HOME">
    <remap from="image" to="/zed/zed_node/right_raw/image_raw_color"/>
      </node>
    </launch>

3.转视频

ffmpeg -r 15  -i /path/frame%04d.jpg test.mp4