mp4.launch

<launch>
  <!-- This launchfile should bring up a node that broadcasts a ros image
       transport on /videofile/image_raw -->

  <arg name="FILENAME"/>
  <arg name="LOOP" default="true"/>
  <arg name="PUBLISH_FRAME" default="false"/>

  <node ns="videofile" name="gscam_driver_v4l" pkg="gscam" type="gscam" output="screen">
    <param name="camera_name" value="default"/>
    <param name="camera_info_url" value="package://gscam/examples/uncalibrated_parameters.ini"/>
    <param name="gscam_config" value="filesrc location=$(arg FILENAME) ! qtdemux ! ffdec_h264 ! ffmpegcolorspace "/>
    <param name="frame_id" value="/videofile_frame"/>
    <param name="sync_sink" value="true"/>
    <param name="reopen_on_eof" value="$(arg LOOP)"/>
  </node>

  <node if="$(arg PUBLISH_FRAME)" name="videofile_transform" pkg="tf" type="static_transform_publisher" args="1 2 3 0 -3.141 0 /world /videofile_frame 10"/>
</launch>