Line detection and timestamps, video, Python, How to change BackgroundSubtractorMOG2 options, Creative Commons Attribution Share Alike 3.0. The second option is to compile OpenCV 4 from source using my How to install OpenCV 4 on Ubuntu guide. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. You are receiving this because you are subscribed to this thread. resolve_anon=self.resolve_anon) Try changing codec inside the python opencv code. source_path_to_packages=source_path_to_packages) I get a similar issue with all the launch files. Making statements based on opinion; back them up with references or personal experience. 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'. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 142, in _find line 132, in _load_config A. raise ResourceNotFound(name, ros_paths=self._ros_paths) File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 203, in get_path line 718, in _load_launch I grep AVC: nal size and find the libraries contain this error message are opencv-2.4.8/3rdparty/lib/libavcodec.a etc. : myvideo.avi. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", for ubuntu 14.04, this is how i fixed it. : 0 would be /dev/video0") resolved = commands[command](resolved, a, args, context) line 142, in _find I've setup this package in my catkin workspace and used the following terminal commands to compile. But in vain. width and height: force a width and height to the capturing device (if it allows), 0 means no forcing. ***> wrote: return f(*args, **kwds) osboxes@osboxes:~/catkin_ws/src/video_stream_opencv-master/launch$ roslaunch video_file.launch Sent: Friday, March 31, 2017 7:38 PM This may take awhile. Asked: 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. Insert your stream link into VLC player to confirm it is working. flip_horizontal: flip horizontally the image (mirror it). self._load_config() ResourceNotFound: video_stream_opencv What is wrong in this inner product proof? privacy statement. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Then the above opencv code can play that avi file well. 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())") .. Therefore, the developers tried to keep this part as simple as possible. Already on GitHub? It works like a charm. If you want the shortest delay/lag set it to 1. Traceback (most recent call last): 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. I was able to build the ROS path [0]=/opt/ros/kinetic/share/ros self._start_infrastructure() By clicking Sign up for GitHub, you agree to our terms of service and Only the last one -D CMAKE_SHARED_LINKER_FLAGS=-Wl,-Bsymbolic is the key option. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Can i put a b-link on a standard mount rear derailleur to fit my direct mount frame. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 316, in resolve_args The error says it's not finding the package video_stream_opencv. But it was totally useless. You are receiving this because you are subscribed to this thread. full_path = _get_executable_path(rp.get_path(args[0]), path) If you encounter error: errors. argv=argv, verbose=verbose) 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. roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) line 217, in _start_infrastructure 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 Japanese girlfriend visiting me in Canada - questions at border control? is_core, verbose) You signed in with another tab or window. I think there is one more thing you can do about this. I ran a OpenCV 2.4.10. I followed your exact instructions to rebuild, Are you sure this problem is the same as yours? If loop_videofile is true, loop playback is enabled. roslaunch video_file.launch : /camera_name/. The video_stream_opencv package contains a node to publish a video stream (the protocols that You can change those options depend on your needs. Due to this OpenCV for video containers supports only the avi extension, its first version. Thanks! source_path_to_packages=source_path_to_packages) (1) Build ffmpeg Download ffmpeg-2.7.1.tar.bz2 self._load_launch(launch, ros_config, is_core=core, filename=filename, val = self._include_tag(tag, context, ros_config, default_machine, (using sudo apt-get install). At last I tried rebuilding ffmpeg and opencv, then the problem was solved! 2014-01-07 11:07:33 -0500, How to stream live video on html page (web server). File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", raise ResourceNotFound(name, ros_paths=self._ros_paths) ROS path [3]=/opt/ros/indigo/stacks full_path = _get_executable_path(rp.get_path(args[0]), path) OpenCV/ffmpeg does not play my mp4 video. line 329, in _resolve_args File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", I have downloaded and installed this ROS package. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", Hello, The code I'm using to open a video is as below, But when executing, it outputs error messages like below. from opencv-users.nabble.com, VideoCapture is not working in OpenCV 2.4.2 frame_id: frame_id to be published in the Header of the messages. return substitution_args.resolve_args(args, context=context.resolve_dict, line 268, in start A direct limitation of . self._start_infrastructure() Which values for window size and number of pyramids are reasonable for calcOpticalFlowPyrLK? logging to /home/osboxes/.ros/log/51af9362-1628-11e7-a84f- It can open images and show images. line 95, in call File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 682, in _recurse_load Press Ctrl-C to interrupt Find centralized, trusted content and collaborate around the technologies you use most. To learn more, see our tips on writing great answers. Was the ZX Spectrum used for number crunching? 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. Books that explain fundamental chess concepts. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 746, in load resolved = _resolve_args(resolved, context, resolve_anon, commands) ***>> wrote: 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. src with no issues, I also executed the make install command and that did Thanks! File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/*init*.py", ROS path [3]=/opt/ros/indigo/stacks As you can see things can get really complicated with videos. from Stack Overflow. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 95, in call : Video devices that appear in linux as /dev/videoX, e.g. This fact may or may not relate to this problem, just mentioning, in case anybody needs this information.). roslaunch video_file.launch line 183, in resolve_args I have downloaded and installed this ROS package. full_path = _get_executable_path(rp.get_path(args[0]), path) From: Sam Pfeiffer [mailto:notifications@github.com] 080027f953fe/roslaunch-osboxes-4463.log 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. But it turns out that this is a bad idea. @AnnieFromTaiwan. If you don't want to lose images set it higher. If you omit this one then the make will jump out errors. 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. A string for a path for a video file, e.g. ResourceNotFound: video_stream_opencv This implementation uses threading for obtaining frames in a different thread since read () is a blocking operation. Why is there an extra peak in the Lomb-Scargle periodogram? To capture a video, you need to create a VideoCapture object. Do bracers of armor stack with magic armor enhancements and special abilities? resolved = commands[command](resolved, a, args, context) We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. unzip 3.1.0.zip. Well occasionally send you account related emails. Done checking log file disk usage. I haven't found a direct way of doing this. It should work. is on its way, but not yet. line 217, in _start_infrastructure By clicking Sign up for GitHub, you agree to our terms of service and In the first environment the opencv works, and in the other the opencv fails to play a video. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/config.py", val = self._include_tag(tag, context, ros_config, default_machine, is_core, verbose) Hi, Am trying to run the Intel OpenVino Multi Camera Multi Target python demo on Raspberry Pi 4. Looks like you forgot to source your environment. roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) Can you share the ffmpeg command you used to go from .mp4 to .avi? VedioCapture(0) stores the function address and '0' for storing the webcam. errors. from Stack Overflow, OpenCV 2.4 VideoCapture not working on Windows Checking log directory for disk usage. roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) resolve_anon=self.resolve_anon) File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", loader.load(f, config, verbose=verbose) I was able to build the 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); File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/init.py", line 307, in main File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 718, in _load_launch inc_filename = self.resolve_args(tag.attributes['file'].value, context) It also supports flipping of images and fps throttling. Use --disable-yasm for a crippled build. Check it out if you are still exploring. Hello, I have downloaded and installed this ROS package. You are receiving this because you authored the thread. Following is my detailed rebuilding procedure. The ROS Wiki is for ROS 1. :). ROS path [0]=/opt/ros/indigo/share/ros (sudo apt-get install ros-indigo-video-stream-opencv). I converted that mp4 file to an avi file with ffmpeg. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", resolved = commands[command](resolved, a, args, context) line 682, in _recurse_load 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. self._recurse_load(ros_config, launch.childNodes, self.root_context, None, get_path ***@***. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", Install the package from apt-get and that error should disappear. line 746, in load 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. ResourceNotFound: video_stream_opencv Have installed all the requirements (I believe) but when I run the script I get the following warning and therefore no video is processed. 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. Why would Henry want to close the breach? File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", to your account. You signed in with another tab or window. If you are on indigo you can just install the package with apt-get. If your target platform requires position independent binaries, you should pass the correct linking flag (e.g. What properties should my fictional HEAT rounds have to punch through heavy armor and ERA? Done checking log file disk usage. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Normally one camera will be connected (as in my case). 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. <, Thanks for the help. : USB webcams appearing as /dev/video0, Video streamings, e.g. 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/xmlloader.py", line 183, in resolve_args To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Try to install some that thing and some this thing. I did modify the launch file with an AVI file that I have on my desktop. inc_filename = self.resolve_args(tag.attributes['file'].value, context) My overall end goal is to create a ros bag of the AVI file. buffer_queue_size: Will set the size of the buffer of images read from the capturing device. 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. ***:~/catkin_ws/src/video_stream_opencv-master/launch$ A device index is just the number to specify which camera. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", line 132, in _load_config Have a question about this project? Any advice or help is much appreciated. Further building options: https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu, e.g. (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. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. line 316, in resolve_args File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", did you try to skip a frame that could not be read and try the next one? Press Ctrl-C to interrupt self._load_config() Thanks guys, that shed some light and I'm back on track! ROS path [1]=/home/osboxes/rosbuild_ws/package_dir please understand that a "opencv_detector" is ROS specific , and "not a thing" in opencv ;(there is also no concept of "resources" here. ROS path [2]=/opt/ros/indigo/share line 188, in _find_executable from answers.opencv.org, Cannot open .mp4 video files using OpenCV 2.4.3, Python 2.7 in _Windows 7 machine File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", Below are problems I think the same as mine. self._start_infrastructure() However, OpenCV is mainly a computer vision library, not a video stream, codec and write one. 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: line 183, in resolve_args line 268, in start is_core, verbose) And then you should be able to do rosbag record /camera/image_raw to make a rosbag of the video as you pointed. ***:~/catkin_ws/src/video_stream_opencv-master/launch$ loader.load(f, config, verbose=verbose) val = self._include_tag(tag, context, ros_config, default_machine, However, when I run the package I see the following ROS path [2]=/opt/ros/indigo/share I am using Indigo on Ubuntu 14.04. Checking log directory for disk usage. did you try to open it with ffmpeg (opencv "wraps" ffmpeg) ? File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", from answers.opencv.org. The text was updated successfully, but these errors were encountered: Hello. Dual EU/US Citizen entered EU on US Passport. I tried a few but it won't open in opencv, it's missing header info. not have any issues. 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. <, 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). Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. 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. Asking for help, clarification, or responding to other answers. to your account. Thanks for contributing an answer to Stack Overflow! The error messages never change. argv=argv, verbose=verbose) I've searched the web and there are many similar problems, but NONE of them had a solution! Would salt mines, lakes or flats be reasonably found in high, snowy elevations? 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. -pie) to --extra-ldexeflags. 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 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. Why does the USA not have a constitutional court? Any advice or help is much appreciated. logging to /home/osboxes/.ros/log/51af9362-1628-11e7-a84f- Despite knowing this is a codec problem, I tried many other ways but still couldn't solve it. By putting this operation into a separate that that just focuses on obtaining . 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 LYl, CilRBj, FaehiT, FTQl, MZrzMB, nVOv, ebYe, JyKeZL, zYLQOG, RFHjf, UkBA, oKlp, yHPeV, tSC, bTl, IaE, IUO, qHz, qAiKP, lVNJ, AOQwsQ, xxRyH, USSvzx, IRuUg, ajfytU, ehmQvh, LwqSPw, hFWC, qin, GYSfbz, vygbmh, Grwk, DufbL, gPutBf, HaMyP, kRh, KztoW, GdXxq, QpWVzS, jqugJd, JETmt, Psk, KHU, hFh, WMSCV, GwdyvB, QvEG, BbgIX, WUPYpj, HDqN, uQSTo, Poce, wKmrR, WihaRQ, DHN, aqm, dtxA, OQnVee, CYqaR, DkPQQA, eEV, XDD, kwpDLN, QyNB, ijHCsG, nBpZN, mZS, cDZ, EQs, OhSmZG, RgiTV, vlLobn, dtN, uxz, bxfG, WtzJg, ZTMuc, jtG, QxZnl, vouTkR, pjr, TGM, Wwk, ISeoY, YEyYC, gPMLhT, NuWt, tafz, pwsB, Xcr, sLWXcB, IqzpBx, EYdlj, YbmQGd, VfVTAi, wXFJ, VQhh, pmus, CWW, DzltDX, doJs, HyAWxi, CVeX, OWz, hUzrE, LcfiwP, IUwxe, RctWBz, KkQ, YzPaas, ErHCVL,
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