Hi to everyone,
I am following this tutorial to generate a video from a bag file in which I put the frames of a vision sensor:
http://wiki.ros.org/rosbag/Tutorials/Exporting%20image%20and%20video%20data
I can go through it without problems but I have one problem.
If I do
$ rosbag info cameraVisionSensorRecord.bag
I get:
path: cameraVisionSensorRecord.bag
version: 2.0
duration: 1:19s (79s)
start: Mar 16 2016 17:26:51.45 (1458145611.45)
end: Mar 16 2016 17:28:10.93 (1458145690.93)
size: 8.7 GB
messages: 1508
compression: none [1508/1508 chunks]
types: sensor_msgs/Image [060021388200f6f0f447d0fcd9c64743]
topics: /vrep/Vision_sensor 1508 msgs : sensor_msgs/Image
This bag file has 1508 msgs inside.
When I try to generate the frames like described in the tutorial I get only 604 frames (605 actually, because it start from 0000.jpg):
.....................
process[rosbag-1]: started with pid [12579]
process[extract-2]: started with pid [12580]
[ INFO] [1458145752.700535439]: Initialized sec per frame to 0.100000
[ INFO] [1458145754.630371279]: Saved image /home/**********/Desktop/rosbag/bitmap/frame0000.jpg
[ INFO] [1458145754.747831132]: Saved image /home/**********/Desktop/rosbag/bitmap/frame0001.jpg
...............................
...............................
[ INFO] [1458148035.459727400]: Saved image /home/**********/Desktop/rosbag/bitmap/frame000602.jpg
[ INFO] [1458148035.620177921]: Saved image /home/**********/Desktop/rosbag/bitmap/frame000603.jpg
[ INFO] [1458148035.732808217]: Saved image /home/**********/Desktop/rosbag/bitmap/frame000604.jpg
[rosbag-1] process has finished cleanly
log file: /home/*******/.ros/log/a4201dd0-eb7f-11e5-bfc5-8cdcd4d399a8/rosbag-1*.log
I do NOT understand why I am not able to get 1508 frames like in the bag file.
Could you explain why this happens?
Thanks in advance.
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