video_stream_opencv video_file.launch does not work

asked 2018-05-30 00:33:51 -0500

Astronaut
302 ●177 ●206 ●214

updated 2018-05-30 23:56:29 -0500

jayess
6155 ●26 ●85 ●92

Hi I want to use video_stream_opencv in order to create a bag file from mp4 video file. So I modified the video_file.launch id oder to use it with my video . this is the launch file

<?xml version="1.0"?>
<launch>
   <!-- node name and ros graph name -->
    <arg name="camera_name" value="camera" />
    <!-- full path to the video file -->
    <arg name="video_stream_provider" value="/home/me/Data/video1.mp4" />     
</launch>

then when run the roslaunch video_stream_opencv video_file.launch I got this

logging to /home/bojan/.ros/log/c9f9691a-63c5-11e8-a7c7-2c27d7ea3cdc/roslaunch-bojan-HP-18429.log Checking log directory for disk usage. This may take awhile. Press Ctrl-C to interrupt Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://bojan-HP:35443/

SUMMARY
PARAMETERS * /rosdistro: kinetic * /rosversion: 1.12.13

NODES

ROS_MASTER_URI=http://localhost:11311

No processes to monitor shutting down processing monitor... ... shutting down processing monitor complete

what is the problem?Im using Ubuntu 16.04 and ROS kinetic

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answered 2018-05-30 01:59:44 -0500

Astronaut
302 ●177 ●206 ●214

updated 2018-05-30 23:54:07 -0500

I got it . The problem was that I modified too much. here ihe good launch file

<?xml version="1.0"?>
<launch>
   <!-- launch video stream -->
   <include file="$(find video_stream_opencv)/launch/camera.launch" >
        <!-- node name and ros graph name -->
        <arg name="camera_name" value="camera" />
        <!-- full path to the video file -->
        <!-- wget http://techslides.com/demos/sample-videos/small.mp4 -O /tmp/small.mp4 -->
        <arg name="video_stream_provider" value="/home/me/Data/video1.mp4" />
        <!-- set camera fps to (video files not affected) -->
        <!-- <arg name="set_camera_fps" value="30"/> -->
        <!-- set buffer queue size of frame capturing to -->
        <arg name="buffer_queue_size" value="1000" />
        <!-- throttling the querying of frames to -->
        <arg name="fps" value="30" />
        <!-- setting frame_id -->
        <arg name="frame_id" value="videofile_frame" />
        <!-- camera info loading, take care as it needs the "file:///" at the start , e.g.:
        "file:///$(find your_camera_package)/config/your_camera.yaml" -->
        <arg name="camera_info_url" value="" />
        <!-- flip the image horizontally (mirror it) -->
        <arg name="flip_horizontal" value="false" />
        <!-- flip the image vertically -->
        <arg name="flip_vertical" value="false" />
        <!-- visualize on an image_view window the stream generated -->
        <arg name="visualize" value="true" />
   </include>
</launch>