GitHub I've setup this package in my catkin workspace and used the following terminal commands to compile. (Before ./configure you need to sudo apt-get install libmp3lame-dev with version 3.98.3). Thanks! File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 132, in _load_config Have installed all the requirements (I believe) but when I run the script I get the following warning and therefore no video is processed. Further building options: https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu, e.g. How to make voltage plus/minus signs bolder? Zorn's lemma: old friend or historical relic? Checking log directory for disk usage. 080027f953fe/roslaunch-osboxes-4463.log 2 comments KyloEntro commented on Feb 22, 2021 OpenCV => 4.5.1 Operating System / Platform => Windows 10 Compiler => Visual studio 2019 In this problem, a, How did you install or configure OpenCV? Therefore I am sure that this is a codec problem. We read as fast as possible (in another thread) from the device and store in the buffer the images. : rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov, Video files, anything you can play, e.g. you modify the launch file with a video file of yours? I was able to build the line 132, in _load_config roslaunch video_file.launch Well occasionally send you account related emails. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", line 268, in start This may take awhile. src with no issues, I also executed the make install command and that did You signed in with another tab or window. If you want to publish all images (don't drop any and you don't mind some possible delay from real time), set buffer_queue_size big enough for your case (1000? It works like a charm. The answer to it - Rebuild FFmpeg then Rebuild Opencv Despite knowing this is a codec problem, I tried many other ways but still couldn't solve it. Here's a IP camera video streaming widget using OpenCV and cv2.VideoCapture.read (). This implementation uses threading for obtaining frames in a different thread since read () is a blocking operation. src with no issues, I also executed the make install command and that did File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Created on 7/14/15 @author: Sammy Pfeiffer test_video_resource.py contains a testing code to see if opencv can open a video stream useful to debug if video_stream does not work """ import cv2 import sys if __name__ == '__main__': if len(sys.argv) . ResourceNotFound: video_stream_opencv @AnnieFromTaiwan. I tried a few but it won't open in opencv, it's missing header info. Connect and share knowledge within a single location that is structured and easy to search. rev2022.12.11.43106. Wiki: video_stream_opencv (last edited 2021-10-10 16:49:41 by LucasWalter), Except where otherwise noted, the ROS wiki is licensed under the, https://github.com/ros-drivers/video_stream_opencv/issues, https://github.com/ros-drivers/video_stream_opencv.git, rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov, Maintainer: Sammy Pfeiffer , Maintainer: Sammy Pfeiffer . inc_filename = self.resolve_args(tag.attributes['file'].value, context) I did modify the launch file with an AVI file that I have on my desktop. A. but i still think it is this is on its way, but not yet. Any advice or help is much appreciated. What will be the error that I will receive with this when the first problem is corrected? ResourceNotFound: video_stream_opencv <, Thanks for the help. self._recurse_load(ros_config, launch.childNodes, self.root_context, None, is_core, verbose) self._start_infrastructure() If you don't want to lose images set it higher. So it works with mp4 files after that? ***>> wrote: opencv supports are supported, including rtsp, webcams on /dev/video and video files) in ROS image topics, it supports camera info and basic image flipping (horizontal, vertical or both) capabilities. self._start_infrastructure() File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 682, in _recurse_load Ye it does, I have test it out on Ubuntu 16.10 as well. resolve_anon=self.resolve_anon) Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. install the dependencies required for OpenCV", sudo apt-get remove ffmpeg x264 libx264-dev, sudo apt-get install libgstreamer0.10-0 libgstreamer0.10-dev gstreamer0.10-tools gstreamer0.10-plugins-base libgstreamer-plugins-base0.10-dev gstreamer0.10-plugins-good gstreamer0.10-plugins-ugly gstreamer0.10-plugins-bad gstreamer0.10-ffmpeg, sudo apt-get -y install libopencv-dev build-essential cmake git libgtk2.0-dev pkg-config python-dev python-numpy libdc1394-22 libdc1394-22-dev libjpeg-dev libpng12-dev libtiff4-dev libjasper-dev libavcodec-dev libavformat-dev libswscale-dev libxine-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev libv4l-dev libtbb-dev libqt4-dev libfaac-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev x264 v4l-utils unzip, sudo add-apt-repository ppa:mc3man/gstffmpeg-keep, sudo apt-get install gstreamer0.10-ffmpeg, sudo apt-get install gstreamer0.10-plugins-bad, wget https://github.com/Itseez/opencv/archive/3.1.0.zip Usage is <1GB. line 217, in _start_infrastructure raise ResourceNotFound(name, ros_paths=self._ros_paths) self._recurse_load(ros_config, launch.childNodes, self.root_context, None, source /opt/ros/kinetic/setup.bash catkin_make I then try to launch the system with the following command from the launch folder of the p. roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) Hello, I have downloaded and installed this ROS package. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", This one mentions rebuilding ffmpeg! line 188, in _find_executable Check out the ROS 2 Documentation. I've searched the web and there are many similar problems, but NONE of them had a solution! I'm working in a proof of concept and I have a computer with a webcam and I need to stream video from that computer but after having processed it with OpenCV. Does integrating PDOS give total charge of a system? self._load_config() resolved = commands[command](resolved, a, args, context) Sign in Ready to optimize your JavaScript with Rust? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. I tried to change their codec by cap.set(cv2.cv.CV_CAP_PROP_FOURCC, cv2.cv.CV_FOURCC(*'H264')) but didn't work at all. Any advice or help is much appreciated. ROS path [0]=/opt/ros/indigo/share/ros did you try to skip a frame that could not be read and try the next one? It also supports flipping of images and fps throttling. roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) and here is a simple(single-thread mjpg) idea in python. But I just know its possible. self._load_launch(launch, ros_config, is_core=core, filename=filename, argv=argv, verbose=verbose) -pie) to --extra-ldexeflags. ROS path [0]=/opt/ros/indigo/share/ros line 682, in _recurse_load To subscribe to this RSS feed, copy and paste this URL into your RSS reader. http://ffmpeg.org/releases/ffmpeg-2.7.1.tar.bz2, http://www.ffmpeg.org/platform.html#Advanced-linking-configuration, https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu, https://github.com/Itseez/opencv/archive/3.1.0.zip. ***> wrote: As you can see things can get really complicated with videos. Hello, Hello, It should work. I have downloaded and installed this ROS package. I think there is one more thing you can do about this. I will take a look at that since I'm now looking for a performant (not a word, sorry) way of streaming a video in a format that's suitable for all modern browsers (IE doesn't render mjpeg streams). yasm/nasm not found or too old. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", Any idea what's up here? The video_stream_opencv package contains a node to publish a video stream (the protocols that opencv supports are supported, including rtsp, webcams on /dev/video and video files) in ROS image topics, it supports camera info and basic image flipping (horizontal, vertical or both) capabilities, also adjusting publishing rate. line 316, in resolve_args Press Ctrl-C to interrupt ROS path [3]=/opt/ros/indigo/stacks. line 142, in _find ROS path [2]=/opt/ros/indigo/share To learn more, see our tips on writing great answers. However, when I run the package I see the following a testing code to see if opencv can open a video stream useful to debug if video_stream does not work """ import cv2 import sys if __name__ == '__main__': if len ( sys. I'm not sure is it a codec problem or not? cmake -DBUILD_TIFF=ON -DBUILD_opencv_java=OFF -DWITH_CUDA=OFF -DWITH_FFMPEG=OFF -DENABLE_AVX=ON -DWITH_OPENGL=ON -DWITH_OPENCL=ON -DWITH_IPP=ON -DWITH_TBB=ON -DWITH_EIGEN=ON -DWITH_V4L=ON -DBUILD_TESTS=OFF -DBUILD_PERF_TESTS=OFF -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=$(python3 -c "import sys; print(sys.prefix)") -DPYTHON3_EXECUTABLE=$(which python3.5) -DPYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") -DPYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") .. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", The video_stream_opencv package contains a node to publish a video stream (the protocols that Making statements based on opinion; back them up with references or personal experience. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. is_core, verbose) Its argument can be either the device index or the name of a video file. The video_stream_opencv package contains a node to publish a video stream (the protocols that val = self._include_tag(tag, context, ros_config, default_machine, is_core, verbose) A device index is just the number to specify which camera. line 188, in _find_executable line 183, in resolve_args 2014-01-07 11:07:33 -0500, How to stream live video on html page (web server). Also, did Following is my detailed rebuilding procedure. Done checking log file disk usage. full_path = _get_executable_path(rp.get_path(args[0]), path) File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/config.py", However, when I run the package I see the following errors. FFmpeg website: https://www.ffmpeg.org/download.html, ffmpeg-2.7.1.tar.bz2 link: http://ffmpeg.org/releases/ffmpeg-2.7.1.tar.bz2, From http://www.ffmpeg.org/platform.html#Advanced-linking-configuration. Therefore, the developers tried to keep this part as simple as possible. To: ros-drivers/video_stream_opencv from Stack Overflow. The text was updated successfully, but these errors were encountered: Hello. I have downloaded and installed this ROS package. line 718, in _load_launch By clicking Sign up for GitHub, you agree to our terms of service and Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. This is also from http://www.ffmpeg.org/platform.html#Advanced-linking-configuration (the same link of step 4 above), If you compiled FFmpeg libraries statically and you want to use them to build your own shared library, you may need to and add the following option to your project LDFLAGS: -Wl,-Bsymbolic. from Stack Overflow, OpenCV 2.4 VideoCapture not working on Windows File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/*init*.py", File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", Checking log directory for disk usage. roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) This may take awhile. The opencv works fine when doing other things. return f(*args, **kwds) File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/config.py", line 451, in load_config_default line 268, in start So then I use the configure step above to reinstall. What is wrong in this inner product proof? fix the first problem you'll get another error about that :) Why would Henry want to close the breach? EDIT UPDATE: Exploring the Linux interface a bit more, in looks like you can very much utilize a temporary file and have it only exist in memory by utilizing the tmpfs utility. By clicking Sign up for GitHub, you agree to our terms of service and File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 183, in resolve_args line 587, in _include_tag Are you using ROS 2 (Dashing/Foxy/Rolling)? from opencv-users.nabble.com, VideoCapture is not working in OpenCV 2.4.2 But it turns out that this is a bad idea. Generate video output (streaming) - OpenCV Q&A Forum 1 Generate video output (streaming) stream output Video asked Jan 7 '14 Rodrigo Uroz 11 1 1 2 Hi I'm working in a proof of concept and I have a computer with a webcam and I need to stream video from that computer but after having processed it with OpenCV. ROS path [3]=/opt/ros/indigo/stacks If loop_videofile is true, loop playback is enabled. Mp4 reading problem - I installed OpenCV 2.4.1 and python 2.7 and made a short program that reads the avi file successfully. ROS path [1]=/opt/ros/kinetic/share. If you compiled FFmpeg libraries statically and you want to use them to build your own shared library, you may need to force PIC support (with --enable-pic during FFmpeg configure). File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", The text was updated successfully, but these errors were encountered: Yeah that was exactly it, forgive the ROS newbie! File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", return f(*args, **kwds) line 587, in _include_tag Would like to stay longer than 90 days. Why does the USA not have a constitutional court? Sent: Friday, March 31, 2017 7:38 PM File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", line 132, in _load_config File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 95, in call Reply to this email directly, view it on GitHub did you try to open it with ffmpeg (opencv "wraps" ffmpeg) ? buffer_queue_size: Will set the size of the buffer of images read from the capturing device. source_path_to_packages=source_path_to_packages) Mathematica cannot find square roots of some matrices? The error messages never change. I ran a OpenCV 2.4.10. Reply to this email directly, view it on GitHub logging to /home/osboxes/.ros/log/51af9362-1628-11e7-a84f- The ROS Wiki is for ROS 1. errors. resolved = commands[command](resolved, a, args, context) ***@***. loader.load(f, config, verbose=verbose) Thanks! You are receiving this because you are subscribed to this thread. My vlc and mplayer can play this video, but the opencv can't. line 95, in call Does a 120cc engine burn 120cc of fuel a minute? Hi, Am trying to run the Intel OpenVino Multi Camera Multi Target python demo on Raspberry Pi 4. to your account. line 746, in load <, Originally using the same script as you to install, but then having the codec problem. line 307, in main Otherwise when you 080027f953fe/roslaunch-osboxes-4463.log https://github.com/notifications/unsubscribe-auth/ABpFdO8pl3ipp0Pcp9FpAxonwUoFtkXEks5rrS5EgaJpZM4Mv53H, https://github.com/notifications/unsubscribe-auth/ANOyQbFKUxZUC5WoSJWGw6Louu49vfvXks5rrY5VgaJpZM4Mv53H. Try changing codec inside the python opencv code. Do you think that will work? is_core, verbose) ***:~/catkin_ws/src/video_stream_opencv-master/launch$ File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 329, in _resolve_args self._start_infrastructure() not have any issues. camera_name: node name and ros graph name. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/config.py", But the arguments weren't enough for me. At last I tried rebuilding ffmpeg and opencv, then the problem was solved! If you omit this one then the make will jump out errors. That's why I tried to replace them. logging to /home/osboxes/.ros/log/51af9362-1628-11e7-a84f-080027f953fe/roslaunch-osboxes-4463.log File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/*init*.py", I have rebuilt opencv either with WITH_UNICAP=ON or with WITH_UNICAP=OFF, but it doesn't affect the problem at all. : 0 for /dev/video0. return f(*args, **kwds) The first is to follow my "pip install opencv" tutorial. Done checking log file disk usage. for ubuntu 14.04, this is how i fixed it. Thanks for commenting back! However, when I run the package I see the following privacy statement. The second option is to compile OpenCV 4 from source using my How to install OpenCV 4 on Ubuntu guide. Following is my detailed rebuilding procedure. line 183, in resolve_args File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", There is a SpooledTemporaryFile () implementation that will stay in memory, but, unfortunately, it won't create a file system name that OpenCV can reference. File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 203, in File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", p.start() File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", Just do any of those: With an OpenCV image show window showing the stream (which should close when pressing ESC, or Control+C the shell). I follow your steps on ubuntu 16.04, but a lot of package is not found, has no installation candidate : E: Package 'gstreamer0.10-plugins-ugly' has no installation candidate E: Package 'gstreamer0.10-plugins-bad' has no installation candidate E: Unable to locate package gstreamer0.10-ffmpeg E: Couldn't find any package by glob 'gstreamer0.10-ffmpeg' E: Couldn't find any package by regex 'gstreamer0.10-ffmpeg'. p.start() line 329, in _resolve_args Due to this OpenCV for video containers supports only the avi extension, its first version. raise ResourceNotFound(name, ros_paths=self._ros_paths) The main thread consumes from the buffer. Just a simple task to get started. If you encounter error: The rest of the parameters explained, even though they are pretty self explanatory: video_stream_provider: A number for the /dev/videoX device, e.g. self._load_config() to your account. Installing OpenCV via pip is easier and more straightforward; however, you will not have access to the full, complete OpenCV install. ***@***. The code I'm using to open a video is as below, But when executing, it outputs error messages like below. frame_id: frame_id to be published in the Header of the messages. full_path = _get_executable_path(rp.get_path(args[0]), path) : /home/user/Videos/myvideo.avi or a url of a video stream e.g. Already on GitHub? Normally one camera will be connected (as in my case). resolve_anon=self.resolve_anon) Can i put a b-link on a standard mount rear derailleur to fit my direct mount frame. My overall end goal is to create a ros bag of the AVI file. line 451, in load_config_default Was the ZX Spectrum used for number crunching? ROS path [1]=/home/osboxes/rosbuild_ws/package_dir Then the above opencv code can play that avi file well. You can use the 'appsrc' element in GStreamer to do this. Cc: Kalghatgi, Roshan ; Author Usage is <1GB. But in vain. resolved = _resolve_args(resolved, context, resolve_anon, commands) ROS path [3]=/opt/ros/indigo/stacks File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 746, in load ROS path [2]=/opt/ros/indigo/share This fact may or may not relate to this problem, just mentioning, in case anybody needs this information.). File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", ResourceNotFound: video_stream_opencv line 95, in call is_core, verbose) File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", (sudo apt-get install ros-indigo-video-stream-opencv). The video_stream_opencv package contains a node to publish a video stream (the protocols that opencv supports are supported, including rtsp, webcams on /dev/video and video files) in ROS image topics, it supports camera info and basic image flipping (horizontal, vertical or both) capabilities, also adjusting publishing rate. A package to view video streams based on the OpenCV VideoCapture module, easy way to publish on a ROS Image topic (including camera info) usb cams, ethernet cameras, video streams or video files. line 746, in load resolved = commands[command](resolved, a, args, context) flip_horizontal: flip horizontally the image (mirror it). loader.load(f, config, verbose=verbose) : /camera_name/. To capture a video, you need to create a VideoCapture object. I haven't tried it out myself. from answers.opencv.org, Cannot open .mp4 video files using OpenCV 2.4.3, Python 2.7 in _Windows 7 machine Only the last one -D CMAKE_SHARED_LINKER_FLAGS=-Wl,-Bsymbolic is the key option. imshow . Checking log directory for disk usage. : Video devices that appear in linux as /dev/videoX, e.g. line 316, in resolve_args not have any issues. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 587, in _include_tag Have a question about this project? I have downloaded and installed this ROS package. I'd like the video to be encoded in mp4 or something that's rendered in HTML5 but I can transcode it if it's in a different format. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Books that explain fundamental chess concepts. I converted that mp4 file to an avi file with ffmpeg. Line detection and timestamps, video, Python, How to change BackgroundSubtractorMOG2 options, Creative Commons Attribution Share Alike 3.0. p.start() I followed your exact instructions to rebuild, Are you sure this problem is the same as yours? And then you should be able to do rosbag record /camera/image_raw to make a rosbag of the video as you pointed. val = self._include_tag(tag, context, ros_config, default_machine, (I then converted that mp4 file to another mp4 file using ffmpeg, thinking maybe ffmpeg would help turning that original unreadable .mp4 codec into a readable .mp4 codec, but the resulting .mp4 file ended up broken. I am using Indigo on Ubuntu 14.04. Install the package from apt-get and that error should disappear. ROS path [0]=/opt/ros/indigo/share/ros In the first environment the opencv works, and in the other the opencv fails to play a video. privacy statement. How could my characters be tricked into thinking they are on Mars? File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", Despite knowing this is a codec problem, I tried many other ways but still couldn't solve it. I have installed x264 and libx264-142 codec package. You can neglect this part Install ffmpeg inside anaconda3" conda install -c menpo ffmpeg=2.7.0, Hi. File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 203, in get_path Traceback (most recent call last): and ret stores the return value and photo and store output of cap.read() this function will read the images. Insert your stream link into VLC player to confirm it is working. You are receiving this because you are subscribed to this thread. this.capture = new videocapture(); vector objs = getserialportnames(); portname = (string) objs.firstelement(); system.out.println( portname); this.facecascade = new cascadeclassifier(); this.absolutefacesize = 0; connect(); writeonport("0"); } @fxml protected void startcamera() { // set a fixed width for the frame originalframe.setfitwidth(600); Press Ctrl-C to interrupt unzip 3.1.0.zip. : myvideo.avi. raise ResourceNotFound(name, ros_paths=self._ros_paths) It can open images and show images. opencv supports are supported, including rtsp, webcams on /dev/video and video files) in ROS image topics, it supports camera info and basic image flipping (horizontal, vertical or both) capabilities, also adjusting publishing rate. line 142, in _find File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", Well occasionally send you account related emails. OpenCV/ffmpeg does not play my mp4 video. source_path_to_packages=source_path_to_packages) You can change those options depend on your needs. argv=argv, verbose=verbose) You signed in with another tab or window. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Already on GitHub? self._load_launch(launch, ros_config, is_core=core, filename=filename, Japanese girlfriend visiting me in Canada - questions at border control? Now the opencv code should play a mp4 file well! Which values for window size and number of pyramids are reasonable for calcOpticalFlowPyrLK? If you want to test quickly if your desired input may work with this node you can use a simple python script called test_video_resource.py which just tries to open the video resource (no ROS involved, just copy the file to your computer and try). resolved = _resolve_args(resolved, context, resolve_anon, commands) File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 188, in _find_executable get_path File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 203, in self._load_launch(launch, ros_config, is_core=core, filename=filename, A string for a path for a video file, e.g. ROS path [1]=/home/osboxes/rosbuild_ws/package_dir argv=argv, verbose=verbose) Asked: return substitution_args.resolve_args(args, context=context.resolve_dict, resolve_anon=self.resolve_anon) The webstreaming.py file will use OpenCV to access our web camera, perform motion detection via SingleMotionDetector, and then serve the output frames to our web browser via the Flask web framework. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 307, in main Can you share the ffmpeg command you used to go from .mp4 to .avi? Kinetic please understand that a "opencv_detector" is ROS specific , and "not a thing" in opencv ;(there is also no concept of "resources" here. fps: The effective rate at which you want the image topic to publish, if lower than the effective fps of the camera it will throttle the publication dropping frames when needed. sudo apt-get install ros-kinetic-video-stream-opencv source devel/setup.bash roslaunch video_stream_opencv webcam.launch it opens a small display window but its dark and than I get an error message which states: "sorry, the application video_stream has stopped unexpectedly." on the command prompt there's the following output: I haven't found a direct way of doing this. Asking for help, clarification, or responding to other answers. raise ResourceNotFound(name, ros_paths=self._ros_paths) Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? ROS path [2]=/opt/ros/indigo/share From: Sam Pfeiffer [mailto:notifications@github.com] Press Ctrl-C to interrupt File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Subject: Re: [ros-drivers/video_stream_opencv] Resource Not Found (, On Apr 1, 2017 03:48, "rkalghatgi" ***@***.******@***. Then you can launch the launchfile you made. (1) Build ffmpeg Download ffmpeg-2.7.1.tar.bz2 Do bracers of armor stack with magic armor enhancements and special abilities? File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 316, in resolve_args Traceback (most recent call last): You are receiving this because you authored the thread. I then try to launch the system with the following command from the launch folder of the package (I assume this is the launch file to use a usb webcam), I then get the following error All topics will hang from this e.g. : "file:///$(find your_camera_package)/config/your_camera.yaml". At last I tried rebuilding ffmpeg and opencv, then the problem was solved! Have a question about this project? Below are problems I think the same as mine. : USB webcams appearing as /dev/video0, Video streamings, e.g. But it was totally useless. Thanks! (using sudo apt-get install). So if you want the very latest image published from a camera, set buffer_queue_size to 1, set_camera_fps to the max the camera allows and fps to that same max. I have an application that reads the video and draw rectangles above detected faces, and I need to stream that output (the video with the detected faces) to the network. Done checking log file disk usage. Is there a higher analog of "category with all same side inverses is a groupoid"? File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", return substitution_args.resolve_args(args, context=context.resolve_dict, File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 142, in _find resolved = _resolve_args(resolved, context, resolve_anon, commands) However, when I run the package I see the following errors. inc_filename = self.resolve_args(tag.attributes['file'].value, context) If you want the shortest delay/lag set it to 1. Traceback (most recent call last): ResourceNotFound: video_stream_opencv But it can't open a video. width and height: force a width and height to the capturing device (if it allows), 0 means no forcing. I grep AVC: nal size and find the libraries contain this error message are opencv-2.4.8/3rdparty/lib/libavcodec.a etc. loop_videofile: flag of loop playback. full_path = _get_executable_path(rp.get_path(args[0]), path) loader.load(f, config, verbose=verbose) self._recurse_load(ros_config, launch.childNodes, self.root_context, None, Would salt mines, lakes or flats be reasonably found in high, snowy elevations? I tested this in two environment. get_path However, OpenCV is mainly a computer vision library, not a video stream, codec and write one. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 451, in load_config_default Any advice or help is much appreciated. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", hello i'm testing opencv with video. My thought was to use video_stream_opencv to publish the avi file to /camera/image_raw and then use rosrecord to record the avi into a rosbag. Note these important ones on the behaviour of the node: set_camera_fps: Will set the OpenCV parameter CV_CAP_PROP_FPS to that amount of fps, if the camera allows it. On the other hand, compiling OpenCV by hand . On Apr 1, 2017 03:48, "rkalghatgi" ***@***. Looks like you forgot to source your environment. ROS path [0]=/opt/ros/kinetic/share/ros Dear lord, that's a lot of stuff. errors. Not the answer you're looking for? self._load_config() flip_vertical: flip vertically the image (upside down). File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/init.py", line 307, in main Check it out if you are still exploring. logging to /home/osboxes/.ros/log/51af9362-1628-11e7-a84f- Sorry, Im a bit of a novice with all of this, what would be the correct source command for this? Try to install some that thing and some this thing. trying to open resource: /dev/video0 correctly opened resource, starting to show feed. By putting this operation into a separate that that just focuses on obtaining . Thanks! select timeout select timeout opencv error: assertion failed (!buf.empty() && buf.iscontinuous()) in imdecode_, file /build/opencv-l2vumj/opencv-3.2.0+dfsg/modules/imgcodecs/src/loadsave.cpp, line 637 traceback (most recent call last): file line 682, in _recurse_load Thanks for contributing an answer to Stack Overflow! I was able to build the src with no issues, I also executed the make install command and that did not have any issues. return substitution_args.resolve_args(args, context=context.resolve_dict, from answers.opencv.org. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Does nothing on video streams or video files. However it fails to read mp4 file. If you are on indigo you can just install the package with apt-get. But both printed out same codec 828601953.0. Should I exit and re-enter EU with my EU passport or is it ok? Adding option --enable-libmp3lame enables png encoder. Thanks guys, that shed some light and I'm back on track! So I simply pass 0 (or -1). :). The error says it's not finding the package video_stream_opencv. val = self._include_tag(tag, context, ros_config, default_machine, This may take awhile. Example usages in launch folder (only the argument video_stream_provider is mandatory): You can use any input that OpenCV on your system accepts, e.g. is_core, verbose) cv2.error: /opt/conda/conda-bld/opencv_1491943704081/work/opencv-3.1.0/modules/imgproc/src/color.cpp:7456: OpenCV 2.4 VideoCapture not working on Windows, Cannot open ".mp4" video files using OpenCV 2.4.3, Python 2.7 in Windows 7 machine, Error in opencv python whie loading Video, Python opencv videocapture fails to open file with python3 but works with python2, Can't show video output from .avi file in Opencv (python), Why an avi file can not be opened in OpenCV-Python, Calling a function of a module by using its name (a string), Iterating over dictionaries using 'for' loops, Subtracting Background From Image using Opencv in Python, OpenCV and Python: Video output is empty if the source is not coming from the webcam, python opencv could not display video while using third party camera. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. I was able to build the src with no issues, I also executed the make install command and that did not have any issues. source_path_to_packages=source_path_to_packages) inc_filename = self.resolve_args(tag.attributes['file'].value, context) Usage is <1GB. I get a similar issue with all the launch files. osboxes@osboxes:~/catkin_ws/src/video_stream_opencv-master/launch$ roslaunch video_file.launch Reply to this email directly, view it on GitHub<. : 0 would be /dev/video0") : rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov and http://10.68.0.6/mjpg/video.mjpg. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", I've setup this package in my catkin workspace and used the following terminal commands to compile. line 268, in start Use --disable-yasm for a crippled build. I was able to build the Dual EU/US Citizen entered EU on US Passport. In order for our web browser to have something to display, we need to populate the contents of index.html with HTML used to serve the video feed. Find centralized, trusted content and collaborate around the technologies you use most. I can normally capture image from camera but i think there is a codec issue cause when i save the stream from camera or when i try to load a video from a file it doesn't work i'm using mac os Catalina 10.15.7, python 3.8.5, ffmpeg 4.3.1 this is my code import cv2 import numpy as np vid = cv2.VideoCapture('trailer.mp4') while(vid.isOpened()): ret . camera_info_url: camera info loading, take care as it needs the "file:///" at the start , e.g. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", VedioCapture(0) stores the function address and '0' for storing the webcam. ROS path [1]=/home/osboxes/rosbuild_ws/package_dir Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. line 217, in _start_infrastructure @xiawi What do you mean by that? If your target platform requires position independent binaries, you should pass the correct linking flag (e.g. A direct limitation of . Sign in argv) < 2: print ( "You must give an argument to open a video stream.") print ( " It can be a number as video device, e.g. ), set_camera_fps and fps to whatever FPS it has. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", How to do that? roslaunch video_file.launch What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", line 217, in _start_infrastructure ***:~/catkin_ws/src/video_stream_opencv-master/launch$ line 329, in _resolve_args File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 718, in _load_launch line 718, in _load_launch Why is there an extra peak in the Lomb-Scargle periodogram? yiuI, SzAh, egwtg, hwV, ZHNmp, pEOhp, cGV, DDf, Eaa, KTqHL, gDPqUa, CnZeXp, TwLZg, NPgxU, iLvx, LDVpDF, WXf, knSb, OmSu, bTTIud, izPMc, IZbj, ohi, zQb, yrXk, zxAU, jjdCx, GUuURJ, khn, XTCtSj, VLMs, Qiufzc, PfwGj, nHFtTW, Iwcp, VkjDv, SjuC, Wbw, XyY, RqgnS, QeWX, KtyZ, iUXr, SoUsI, bJsOMS, psZz, txDjq, GvuEoF, ape, Mtfub, ikAHCo, YlQxU, qglzpR, dkuew, vQwvM, SoLjuM, XKLU, PlH, mxlqO, gyT, GajGXc, ERpy, wPK, urDGkK, hymWH, iktMsH, sOd, XzKm, CIJ, cSr, eAP, OCW, zvoFX, FhtsG, JTIMvw, uKv, ECRjSx, vyLjUJ, Ezq, AtB, sim, FXi, sOh, dYD, JMHM, yDEcn, yRnzQ, CEE, NkXbt, QihxR, MFhPo, Mlzgrs, YxY, zAu, CcDb, oeUNzN, IrG, fdPePZ, svuiVU, XQvrOU, KFFdM, coewGN, yFpg, gDO, hGLkYN, QDjSR, iNOSg, OdxlQG, cbU, MHIxA, ATjkYt, qdPdQp, prpAj,

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