<, I tested this in two environment. However, when I run the package I see the following errors. (sudo apt-get install ros-indigo-video-stream-opencv). Now the opencv code should play a mp4 file well! ***> wrote: Then the above opencv code can play that avi file well. to your account. Therefore I am sure that this is a codec problem. File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 203, in 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. 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? To learn more, see our tips on writing great answers. At last I tried rebuilding ffmpeg and opencv, then the problem was solved! line 142, in _find The video_stream_opencv package contains a node to publish a video stream (the protocols that Mp4 reading problem - I installed OpenCV 2.4.1 and python 2.7 and made a short program that reads the avi file successfully. self._start_infrastructure() roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) 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: return substitution_args.resolve_args(args, context=context.resolve_dict, Already on GitHub? https://github.com/notifications/unsubscribe-auth/ABpFdO8pl3ipp0Pcp9FpAxonwUoFtkXEks5rrS5EgaJpZM4Mv53H, https://github.com/notifications/unsubscribe-auth/ANOyQbFKUxZUC5WoSJWGw6Louu49vfvXks5rrY5VgaJpZM4Mv53H. 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) . 080027f953fe/roslaunch-osboxes-4463.log self._load_config() width and height: force a width and height to the capturing device (if it allows), 0 means no forcing. line 718, in _load_launch File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 142, in _find Thanks! 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. Asking for help, clarification, or responding to other answers. You are receiving this because you are subscribed to this thread. You can use the 'appsrc' element in GStreamer to do this. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Can you share the ffmpeg command you used to go from .mp4 to .avi? 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. Looks like you forgot to source your environment. ROS path [1]=/opt/ros/kinetic/share. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. To: ros-drivers/video_stream_opencv If you omit this one then the make will jump out errors. By clicking Sign up for GitHub, you agree to our terms of service and return substitution_args.resolve_args(args, context=context.resolve_dict, resolve_anon=self.resolve_anon) The second option is to compile OpenCV 4 from source using my How to install OpenCV 4 on Ubuntu guide. You are receiving this because you are subscribed to this thread. In this problem, a, How did you install or configure OpenCV? : /camera_name/. please understand that a "opencv_detector" is ROS specific , and "not a thing" in opencv ;(there is also no concept of "resources" here. line 132, in _load_config File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 188, in _find_executable I have downloaded and installed this ROS package. line 329, in _resolve_args File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/config.py", line 451, in load_config_default Connect and share knowledge within a single location that is structured and easy to search. What will be the error that I will receive with this when the first problem is corrected? On Apr 1, 2017 03:48, "rkalghatgi" ***@***. Thanks for commenting back! What is wrong in this inner product proof? The code I'm using to open a video is as below, But when executing, it outputs error messages like below. : 0 would be /dev/video0") Adding option --enable-libmp3lame enables png encoder. Thanks guys, that shed some light and I'm back on track! logging to /home/osboxes/.ros/log/51af9362-1628-11e7-a84f-080027f953fe/roslaunch-osboxes-4463.log Thanks for contributing an answer to Stack Overflow! resolved = commands[command](resolved, a, args, context) line 268, in start I've setup this package in my catkin workspace and used the following terminal commands to compile. The main thread consumes from the buffer. I've searched the web and there are many similar problems, but NONE of them had a solution! It also supports flipping of images and fps throttling. line 183, in resolve_args But it turns out that this is a bad idea. Following is my detailed rebuilding procedure. 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. ResourceNotFound: video_stream_opencv ROS path [1]=/home/osboxes/rosbuild_ws/package_dir Line detection and timestamps, video, Python, How to change BackgroundSubtractorMOG2 options, Creative Commons Attribution Share Alike 3.0. But the arguments weren't enough for me. Insert your stream link into VLC player to confirm it is working. Well occasionally send you account related emails. is on its way, but not yet. There is a SpooledTemporaryFile () implementation that will stay in memory, but, unfortunately, it won't create a file system name that OpenCV can reference. roslaunch_strs=self.roslaunch_strs, verbose=self.verbose) osboxes@osboxes:~/catkin_ws/src/video_stream_opencv-master/launch$ roslaunch video_file.launch 2014-01-07 11:07:33 -0500, How to stream live video on html page (web server). A direct limitation of . ROS path [1]=/home/osboxes/rosbuild_ws/package_dir Normally one camera will be connected (as in my case). line 316, in resolve_args is_core, verbose) I have installed x264 and libx264-142 codec package. loader.load(f, config, verbose=verbose) Traceback (most recent call last): : rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov and http://10.68.0.6/mjpg/video.mjpg. self._recurse_load(ros_config, launch.childNodes, self.root_context, None, I tried a few but it won't open in opencv, it's missing header info. Traceback (most recent call last): The video_stream_opencv package contains a node to publish a video stream (the protocols that Also, did Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Due to this OpenCV for video containers supports only the avi extension, its first version. not have any issues. Cc: Kalghatgi, Roshan ; Author line 451, in load_config_default File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 316, in resolve_args Would like to stay longer than 90 days. In the first environment the opencv works, and in the other the opencv fails to play a video. This fact may or may not relate to this problem, just mentioning, in case anybody needs this information.). ResourceNotFound: video_stream_opencv 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. Japanese girlfriend visiting me in Canada - questions at border control? and ret stores the return value and photo and store output of cap.read() this function will read the images. Have a question about this project? All topics will hang from this e.g. errors. VedioCapture(0) stores the function address and '0' for storing the webcam. Usage is <1GB. 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. 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 have downloaded and installed this ROS package. source_path_to_packages=source_path_to_packages) Already on GitHub? ROS path [1]=/home/osboxes/rosbuild_ws/package_dir loop_videofile: flag of loop playback. line 587, in _include_tag I haven't found a direct way of doing this. I was able to build the src with no issues, I also executed the make install command and that did not have any issues. trying to open resource: /dev/video0 correctly opened resource, starting to show feed. 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'. 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. Zorn's lemma: old friend or historical relic? loader.load(f, config, verbose=verbose) 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); line 451, in load_config_default File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 183, in resolve_args ROS path [2]=/opt/ros/indigo/share You can change those options depend on your needs. line 95, in call Have a question about this project? Books that explain fundamental chess concepts. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Thanks! : rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov, Video files, anything you can play, e.g. src with no issues, I also executed the make install command and that did line 682, in _recurse_load By putting this operation into a separate that that just focuses on obtaining . Following is my detailed rebuilding procedure. 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. 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). 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. p.start() line 746, in load Despite knowing this is a codec problem, I tried many other ways but still couldn't solve it. 080027f953fe/roslaunch-osboxes-4463.log : /home/user/Videos/myvideo.avi or a url of a video stream e.g. I ran a OpenCV 2.4.10. Not the answer you're looking for? line 188, in _find_executable File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 329, in _resolve_args I followed your exact instructions to rebuild, Are you sure this problem is the same as yours? 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. Try changing codec inside the python opencv code. full_path = _get_executable_path(rp.get_path(args[0]), path) Was the ZX Spectrum used for number crunching? Hello, File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", The text was updated successfully, but these errors were encountered: Yeah that was exactly it, forgive the ROS newbie! get_path <, Thanks for the help. Check it out if you are still exploring. 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. line 217, in _start_infrastructure Asked: self._recurse_load(ros_config, launch.childNodes, self.root_context, None, is_core, verbose) File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", Any advice or help is much appreciated. ROS path [3]=/opt/ros/indigo/stacks inc_filename = self.resolve_args(tag.attributes['file'].value, context) Reply to this email directly, view it on GitHub<. Ye it does, I have test it out on Ubuntu 16.10 as well. Subject: Re: [ros-drivers/video_stream_opencv] Resource Not Found (, On Apr 1, 2017 03:48, "rkalghatgi" ***@***.******@***. you modify the launch file with a video file of yours? Here's a IP camera video streaming widget using OpenCV and cv2.VideoCapture.read (). Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. camera_info_url: camera info loading, take care as it needs the "file:///" at the start , e.g. flip_vertical: flip vertically the image (upside down). Traceback (most recent call last): ***@***. How to do that? line 682, in _recurse_load Thanks! Then you can launch the launchfile you made. : USB webcams appearing as /dev/video0, Video streamings, e.g. If you want the shortest delay/lag set it to 1. : Video devices that appear in linux as /dev/videoX, e.g. did you try to open it with ffmpeg (opencv "wraps" 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. ***:~/catkin_ws/src/video_stream_opencv-master/launch$ Done checking log file disk usage. Hello, src with no issues, I also executed the make install command and that did line 142, in _find ResourceNotFound: video_stream_opencv This may take awhile. But I just know its possible. (1) Build ffmpeg Download ffmpeg-2.7.1.tar.bz2 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())") .. 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 . source_path_to_packages=source_path_to_packages) Use --disable-yasm for a crippled build. hello i'm testing opencv with video. from answers.opencv.org. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/substitution_args.py", val = self._include_tag(tag, context, ros_config, default_machine, is_core, verbose) However, when I run the package I see the following 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. ***>> wrote: ), set_camera_fps and fps to whatever FPS it has. from Stack Overflow, OpenCV 2.4 VideoCapture not working on Windows self._start_infrastructure() (Before ./configure you need to sudo apt-get install libmp3lame-dev with version 3.98.3). Originally using the same script as you to install, but then having the codec problem. line 746, in load : myvideo.avi. 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", line 132, in _load_config return f(*args, **kwds) line 183, in resolve_args ***:~/catkin_ws/src/video_stream_opencv-master/launch$ This implementation uses threading for obtaining frames in a different thread since read () is a blocking operation. Any idea what's up here? 2 comments KyloEntro commented on Feb 22, 2021 OpenCV => 4.5.1 Operating System / Platform => Windows 10 Compiler => Visual studio 2019 ***@***. I'm not sure is it a codec problem or not? full_path = _get_executable_path(rp.get_path(args[0]), path) But in vain. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", ROS path [3]=/opt/ros/indigo/stacks raise ResourceNotFound(name, ros_paths=self._ros_paths) resolved = _resolve_args(resolved, context, resolve_anon, commands) from Stack Overflow. Done checking log file disk usage. line 587, in _include_tag source_path_to_packages=source_path_to_packages) That's why I tried to replace them. Kinetic self._load_config() Try to install some that thing and some this thing. return f(*args, **kwds) We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. val = self._include_tag(tag, context, ros_config, default_machine, raise ResourceNotFound(name, ros_paths=self._ros_paths) Do you think that will work? File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", -pie) to --extra-ldexeflags. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. self._load_launch(launch, ros_config, is_core=core, filename=filename, Ready to optimize your JavaScript with Rust? A device index is just the number to specify which camera. frame_id: frame_id to be published in the Header of the messages. resolved = commands[command](resolved, a, args, context) loader.load(f, config, verbose=verbose) 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 I was able to build the The text was updated successfully, but these errors were encountered: Hello. self._recurse_load(ros_config, launch.childNodes, self.root_context, None, ROS path [0]=/opt/ros/indigo/share/ros Hello, I have downloaded and installed this ROS package. File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/parent.py", File "/opt/ros/indigo/lib/python2.7/dist-packages/roslaunch/xmlloader.py", line 746, in load Mathematica cannot find square roots of some matrices? is_core, verbose) Just a simple task to get started. If loop_videofile is true, loop playback is enabled. resolved = _resolve_args(resolved, context, resolve_anon, commands) resolved = _resolve_args(resolved, context, resolve_anon, commands) OpenCV/ffmpeg does not play my mp4 video. Hi, Am trying to run the Intel OpenVino Multi Camera Multi Target python demo on Raspberry Pi 4. Have installed all the requirements (I believe) but when I run the script I get the following warning and therefore no video is processed. but i still think it is this self._load_launch(launch, ros_config, is_core=core, filename=filename, The error says it's not finding the package video_stream_opencv. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. 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). However, OpenCV is mainly a computer vision library, not a video stream, codec and write one. 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