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Questions tagged [video]

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Error: Could not demultiplex stream video player opencv depth camera

Video player gives "could not demultiplex stream" ...
Vrushab Jain's user avatar
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26 views

Video streaming over Rosbridge

I'm researching what is the best way to stream video using a video camera, over Rosbridge, to a browser. What are the options out there?
ratchet and clank's user avatar
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1 answer
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Is there a way to publish a video file so it can be displayed with a camera display in RViz? (solved)

I have recorded videos I want to display in RViz with a camera display so that I can overlay them with my other plugins. Is there a way to do that? I tried with the video_stream_opencv plugin already ...
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1 answer
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how to record published images from USB camera to mp4/avi format

I am using usb_cam package to publish live images from USB camera. I want to save the all images published on image_raw topics to mp4/avi video that is easily portable. Environment Details: ROS ...
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1 answer
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custom stereo camera publisher fails mysteriously

I'm trying to make a stereo camera for visual odometry. My Python script to publish the images consistently stops after ~500 images, with no errors. I have cameras plugged into the 2 CSI ports on the ...
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1 answer
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how to increase the resolution of logitech c920 to detect aruco markers more stably

I am using logitech c920(about 12ft above ground) to detect an aruco marker using the aruco_ros library. The resolution is set to 640x480 but at this resolution the aruco marker is not being detected ...
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1 answer
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Web-server-video remote access

Hi, I'm trying to access the web-video-server. I got it to work on localhost, the url in the doc works and everything is fine. However I can't access it remotely ( on a different laptop on the same ...
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1 answer
22 views

Convert point cloud video to .las format

I have point cloud video and I want to convert it to .las format. Maybe there is tool for point cloud video conversion to .las 3D format? Or maybe you can give an approach for achieving that? ...
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1 answer
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How to use the video file as the topic of subscription instead of any camera directly?

Instead of using real time video streaming data, how to get input from the video file? Originally posted by chaiein on ROS Answers with karma: 1 on 2017-04-07 Post score: 0
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1 answer
2 views

Send a video from ROS to OpenCV app

Hello, I want to publish a .avi/mp4 file through ROS to my OpenCV app. How do I do so? Originally posted by Zig on ROS Answers with karma: 1 on 2017-02-22 Post score: 0
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1 answer
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video stream needed for ARDRONE

Hi, This is Kathir. While using cv and ros bridge, I am not able to ardrone's camera's output in my computer. Could somebody help me to fix this ? Should I have to change the topics in publisher or ...
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ros: kinetic: web_video_server

Hi my maintainers, is there a reason why web_video_server is not available at ros-kinetic default distribution ? I like this nice tool for my robots frontview cam. Cheers Christian Originally posted ...
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1 answer
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A problem with Gstreamer 1.0 on ROS

Hello, I'm trying to get running a UDP Camera with the help of Gstreamer on ROS. I carefully went through the tutorials of Gstreamer and I managed to get a functional C program to get the video feed. ...
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1 answer
5 views

Extract video from PointCloud2

I have a rosbag file with sensor_msgs/PointCloud2 data. I want to extract a video from these data. All the ROS tools I found is related to the extraction of video from an Image topic. Is it possible ...
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2 answers
7 views

Converting raw image into mono8

Hi, I'm trying to use the ethzasl_ptam node. Curently, I am passing an image to it using my webcam with the uvc_camera node. I am getting clean raw footage from the uvc_camer node (I can see in with ...
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2 answers
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video from node to v4l2

Hi, I need to pass a video stream from the ardrone_autonomy package's topic 'ardrone/front/image_raw' to a v4l2 (Video 4 Linux 2) virtual device dev/video0. Is there any package that could help me do ...
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1 answer
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Reading a video file (*.mp4) using gscam

I am trying to read a video file of mp4 type using gscam and display onto image_view. It seems working at the first try but it does not work again once it is terminated. Is there something I missed? I ...
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1 answer
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ROSCon 2014 videos Here

I've been looking at http://vimeo.com/osrfoundation/videos and http://roscon.ros.org/2014/program/ for videos. The composite split-screen with presenter and presentation videos side-by-side videos are ...
Lucas Walter's user avatar
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can not see video on the website

I want to follow the video on navigation tutorials to set up rviz for the Navigation Stack,but I can not see the video,it is blank where the video should play.I Click the right mouse button,it shows &...
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2 answers
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Video editing tools used in Willow Garage videos

Hello, With what tools did the WG folks make those nice PR2 demo videos? The videos are simple, yet slick, and we'd like to find the shortest path to similarly simple-but-slick videos for our robot. ...
Rick's user avatar
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2 answers
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Can you recommend a module for localization using one ore two video cameras?

The title says all - I've one (or two cameras, maybe handy for stereo vision) which I would like to use for localization. Data from odometry is here, too. Originally posted by mifritscher on ROS ...
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1 answer
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Webots version 7.1.2 problem with image_raw / Nao Robots / ROS

Hello there, Our group has been trying to get a video feed from a Nao Robot in Webots, using ROS. We've successfully managed to obtain a video image from the top camera (ID:"/CameraTop_frame"...
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1 answer
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How to stream the /camera/rgb/image_color from Kinect to another workstation

Hello, I have a laptop connected to a Turtlebot with a Kinect. I have been able to get the live video of the kinect through rviz. I also am able to connect from another machine to the laptop via ssh. ...
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1 answer
19 views

H.264 video server

Hi all, Does anyone know of any H.264 video server that runs on ROS? I am aware of the mjpeg server. However, mjpeg takes up al lot of bandwidth. Any other non ROS implementation will also help. ...
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1 answer
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Is multiple cameras views for mjpeg_server possible?

I am trying to set up multiple camera views for tele-operation under mjpeg_server. I would like to utilize up to 4 cameras running on one machine simultaneously to be output to one webpage. Or ...
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1 answer
3 views

Use android's camera

Hi, is there a way to get a video stream from an android phone's camera in the pc and publish it as a sensor_msgs/Image message? Also, is there a package to convert a recorded video file into ...
user avatar
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2 answers
62 views

streaming video from a ros topic to a client browser

I want to stream live data from my robot to the internet. Right now I have a ROS node communicating with a webcam and publishing Image/CompressedImage data. The robot needs this data to follow lines/...
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1 answer
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Video Capture (Composite Camera)

What is the easiest way to get composite video into ROS? I'm talking about the cheap surveillance camera type stuff. They sell USB adapters like this which I would like to use: http://www.amazon.com/...
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1 answer
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Depth map compression

Hi, I'm trying to compress a depth map stream from the Kinect sensor. The requirements is that at 10fps, the uplink should be approx. 1.5 Mbit/s which is most ordinary people have at home (granted, ...
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1 answer
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Is there any ROS class have videos available?

What I know about ROS video is only about Workshop or CoTeSys, that is great for anyone who want to learn more about ROS. I want to know if there exist any formal class for ROS, it will be very great ...
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1 answer
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Where is the second part of navigation video in PR2 Beta Training Workshop on ROS & PR2?

In PR2BetaTraining I can find the first part of navigation video (1/4). Where is the other parts of navigation video such as 2/4,3/4,4/4? Thank you~ Originally posted by sam on ROS Answers with karma:...
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1 answer
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cannot detect file - file path problem?

Hi, Sorry if this is a dumb question but I am trying to use openCV with ROS to load an .avi file unsuccessfully. To test out video loading, I used a very simple sample code online http://nashruddin....
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1 answer
8 views

Exporting compressed video

I followed the linked image and video data export tutorial: http://www.ros.org/wiki/rosbag/Tutorials/Exporting%20image%20and%20video%20data However, I only save the compressed video to the bag file. ...
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1 answer
2 views

Duplicate images using GSCAM

Hi, I am trying to use GSCAM to capture video from a composite video input through a ViewCast Osprey 230 analogue video capture card. I have set GSCAM_CONFIG to: ...
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1 answer
2 views

Recording video from the PR2

Hey everyone, I was wondering if there were any pre-built tools for recording video streams from the PR2's camera. I need to record video that I can synchronize to sensor signals from the PR2's ...
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3 answers
1 view

How much horsepower is needed to run the kinect stack

I have the kinect installed but RVIZ is really slow, a frame every few seconds I'm assuming it is my graphics card that is causing it.I have a Dell Inspiron 9400 and it has an ATI Mobility Radeon ...
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1 answer
1 view

Cannot play AVI files with Diamondback Debian OpenCV

I can't seem to play AVI files using the latest ROS OpenCV Debian packages under Diamondback and Ubuntu 10.04. Is anyone else able to do this? I am wondering if the Debian packages were compiled ...
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0 votes
1 answer
3 views

Integrating glc within package for capturing video

Hi all, I'd like to use glc ( http://www.ros.org/wiki/RecordingOpenGLAppsWithGLC ) to capture video from an OpenGL window from within a ROS package. There are instructions for running glc separately ...
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1 answer
3 views

Problem retrieving video from rovio camera

Hi, I'm trying to connect Rovio to my computer using the rovio package. The robot connects to the computer with no problem using roslaunch rovio.launch, but I can't retrieve the video. I see that the ...
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