Hi,
I am using ROS hydro on Ubuntu 12.04.
After using the command "**rosrun image_view extract_images _sec_per_frame:=0.01 image:={IMAGE_TOPIC_IN_BAGFILE}**" I'm having an error when executing"**ffmpeg -r -b -i frame%04d.jpg .avi**" The thing is I am not seeing the sequence of images after I play the bagfile.I ran "rosbag info" to obtain the topic in the bag file but when I run **"rosrun rqtgraph rqtgraph"** the /extract_image frame node is there all by itself.
When I follow the tutorials on http://wiki.ros.org/rosbag/Tutorials/Exporting%20image%20and%20video%20data I get an error "*[FATAL] [1394583654.335465840]: Error opening file: play*".After replacing play by "--clock" or just removing "play" everything seemed to go just fine but there are no frames*.jpg in **/home/.ros**.
I feel like I'm lacking something.Can anyone help?
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