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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>

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>

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>