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Is there any way to import an MPEG movie file into a rosbag format?
I have some video recorded off of an HD digital camera that I want to do various processing on (camera calibration and ar_pose), but I'm not sure how to get it into a format that I can use in ROS.
I'll post my code for this tomorrow on my git, I can't push from out of my office. The only thing I still need to add the camera info from xml file and a better way to compute the timestamp, suggestions are welcome.
I've pushed it to : KU Leuven OpenCV Git
'I tired your code with some avi files, but with non works, i get: ./bin/video_to_bag v1.bag ~/Desktop/v2.avi INFO: usage = video_to_bag <bagname> <videoname> INFO: starting conversion INFO: got fps of: 25, or 0.040000 incrementation ERROR: Could not grab a frame, perhaps we're at the end of the movie' What could be the problem? I can play the movies with a software.
I could not find a "tool" to do this, but you can easily read frames from a video file into opencv:
http://opencv.willowgarage.com/documentation/cpp/reading_and_writing_images_and_video.html
And then you can use the image_transport package in ROS to output them onto a topic for processing:
http://www.ros.org/wiki/image_transport
Or you could use the python/c++ bagfile interface with opencv to write the frames of the video to the bag file directly.
gl hf
Asked: 2011-04-11 02:26:42 -0600
Seen: 2,781 times
Last updated: Apr 12 '11
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Hello
I have the same problem, could you help me how to convert a movie file into a rosbag?
thank you very much