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Export rosbag header time stamp

Hi everyone,

I am using ROS electric. I am saving /camera/rgb/image_color topic to a bag file by using 'rosbag record' command. After that, by using rxbag tool, I can save all the images. It saves the images as frame0001.png format.

Now, my problem is, from rxbag tool, I can see the time stamp in header>stamp>secs and header>stamp>nsecs fields for each frame. How can I export this time stamps information so that I can relate the exact time of each frame, e.g frame0100.png happened in time 111 secs 211 nsecs.

I have another confusion. I guess, this is the time when the frames are created, not when the frames are saved in bag file, right?

Thanks in advance for you valuable help.

Best regards, Tariq

Export rosbag header time stamp

Hi everyone,

I am using ROS electric. I am saving /camera/rgb/image_color topic to a bag file by using 'rosbag record' command. After that, by using rxbag tool, I can save all the images. It saves the images as frame0001.png format.

Now, my problem is, from rxbag tool, I can see the time stamp in header>stamp>secs and header>stamp>nsecs fields for each frame. How can I export this time stamps information so that I can relate the exact time of each frame, e.g frame0100.png happened in time 111 secs 211 nsecs.

I have another confusion. I guess, this is the time when the frames are created, not when the frames are saved in bag file, right?

Thanks in advance for you valuable help.

Best regards, Tariq

Export rosbag header time stamp

Hi everyone,

I am using ROS electric. I am saving /camera/rgb/image_color topic to a bag file by using 'rosbag record' command. After that, by using rxbag tool, I can save all the images. It saves the images as frame0001.png format.

Now, my problem is, from rxbag tool, I can see the time stamp in header>stamp>secs and header>stamp>nsecs fields for each frame. How can I export this time stamps information so that I can relate the exact time of each frame, e.g frame0100.png happened in time 111 secs 211 nsecs.

I have another confusion. I guess, this is the time when the frames are created, not when the frames are saved in bag file, right?

Thanks in advance for you your valuable help.

Best regards, Tariq