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• Video file stopping in between due to debugging error in openCV C++ [closed]

  24 juin 2022, par Vaibhav Khamesra

  I am trying to open a video file using openCV in C++ using visual studio but the video is stopping in between prompting a debugging error not sure what to do, I tried some things taking reference from some solutions but none of them is working i.e. switching the runtime library. Here is my code followed by the error message and screenshot of the error.

  


  [ INFO:0@0.005] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\videoio_registry.cpp (223) cv::`anonymous-namespace'::VideoBackendRegistry::VideoBackendRegistry VIDEOIO: Enabled backends(8, sorted by priority): FFMPEG(1000); GSTREAMER(990); INTEL_MFX(980); MSMF(970); DSHOW(960); CV_IMAGES(950); CV_MJPEG(940); UEYE(930)
[ INFO:0@0.006] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\backend_plugin.cpp (383) cv::impl::getPluginCandidates Found 3 plugin(s) for FFMPEG
[ INFO:0@0.007] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load D:\opencv\build\bin\opencv_videoio_ffmpeg460_64d.dll => FAILED
[ INFO:0@0.007] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_videoio_ffmpeg460_64d.dll => FAILED
[ INFO:0@0.011] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_videoio_ffmpeg460_64.dll => OK
[ INFO:0@0.011] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\backend_plugin.cpp (50) cv::impl::PluginBackend::initCaptureAPI Found entry: 'opencv_videoio_capture_plugin_init_v1'
[ INFO:0@0.011] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\backend_plugin.cpp (169) cv::impl::PluginBackend::checkCompatibility Video I/O: initialized 'FFmpeg OpenCV Video I/O Capture plugin': built with OpenCV 4.6 (ABI/API = 1/1), current OpenCV version is '4.6.0' (ABI/API = 1/1)
[ INFO:0@0.012] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\backend_plugin.cpp (69) cv::impl::PluginBackend::initCaptureAPI Video I/O: plugin is ready to use 'FFmpeg OpenCV Video I/O Capture plugin'
[ INFO:0@0.012] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\backend_plugin.cpp (84) cv::impl::PluginBackend::initWriterAPI Found entry: 'opencv_videoio_writer_plugin_init_v1'
[ INFO:0@0.012] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\backend_plugin.cpp (169) cv::impl::PluginBackend::checkCompatibility Video I/O: initialized 'FFmpeg OpenCV Video I/O Writer plugin': built with OpenCV 4.6 (ABI/API = 1/1), current OpenCV version is '4.6.0' (ABI/API = 1/1)
[ INFO:0@0.012] global c:\build\master_winpack-build-win64-vc15\opencv\modules\videoio\src\backend_plugin.cpp (103) cv::impl::PluginBackend::initWriterAPI Video I/O: plugin is ready to use 'FFmpeg OpenCV Video I/O Writer plugin'
[ INFO:0@0.026] global c:\build\master_winpack-build-win64-vc15\opencv\modules\highgui\src\registry.impl.hpp (114) cv::highgui_backend::UIBackendRegistry::UIBackendRegistry UI: Enabled backends(4, sorted by priority): GTK(1000); GTK3(990); GTK2(980); WIN32(970) + BUILTIN(WIN32UI)
[ INFO:0@0.026] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load D:\opencv\build\bin\opencv_highgui_gtk460_64.dll => FAILED
[ INFO:0@0.027] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_highgui_gtk460_64.dll => FAILED
[ INFO:0@0.027] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load D:\opencv\build\bin\opencv_highgui_gtk3460_64.dll => FAILED
[ INFO:0@0.027] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_highgui_gtk3460_64.dll => FAILED
[ INFO:0@0.028] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load D:\opencv\build\bin\opencv_highgui_gtk2460_64.dll => FAILED
[ INFO:0@0.028] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_highgui_gtk2460_64.dll => FAILED
[ INFO:0@0.028] global c:\build\master_winpack-build-win64-vc15\opencv\modules\highgui\src\backend.cpp (90) cv::highgui_backend::createUIBackend UI: using backend: WIN32 (priority=970)
[ INFO:0@0.029] global c:\build\master_winpack-build-win64-vc15\opencv\modules\highgui\src\window_w32.cpp (3013) cv::impl::Win32BackendUI::createWindow OpenCV/UI: Creating Win32UI window: Image (1)
[ INFO:0@0.048] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\parallel\registry_parallel.impl.hpp (96) cv::parallel::ParallelBackendRegistry::ParallelBackendRegistry core(parallel): Enabled backends(3, sorted by priority): ONETBB(1000); TBB(990); OPENMP(980)
[ INFO:0@0.048] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load D:\opencv\build\bin\opencv_core_parallel_onetbb460_64d.dll => FAILED
[ INFO:0@0.049] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_core_parallel_onetbb460_64d.dll => FAILED
[ INFO:0@0.049] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load D:\opencv\build\bin\opencv_core_parallel_tbb460_64d.dll => FAILED
[ INFO:0@0.050] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_core_parallel_tbb460_64d.dll => FAILED
[ INFO:0@0.050] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load D:\opencv\build\bin\opencv_core_parallel_openmp460_64d.dll => FAILED
[ INFO:0@0.050] global c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\utils\plugin_loader.impl.hpp (67) cv::plugin::impl::DynamicLib::libraryLoad load opencv_core_parallel_openmp460_64d.dll => FAILED
OpenCV(4.6.0) Error: Assertion failed (size.width>0 && size.height>0) in cv::imshow, file c:\build\master_winpack-build-win64-vc15\opencv\modules\highgui\src\window.cpp, line 967
OpenCV: terminate handler is called! The last OpenCV error is:
OpenCV(4.6.0) Error: Assertion failed (size.width>0 && size.height>0) in cv::imshow, file c:\build\master_winpack-build-win64-vc15\opencv\modules\highgui\src\window.cpp, line 967


  


  Here is my code :

  


  #include<opencv2></opencv2>imgcodecs.hpp>&#xA;#include<opencv2></opencv2>highgui.hpp>&#xA;#include<opencv2></opencv2>imgproc.hpp>&#xA;#include<opencv2></opencv2>highgui/highgui.hpp>&#xA;#include<iostream>&#xA;using namespace std;&#xA;using namespace cv;&#xA;&#xA;//Video&#xA;int main() {&#xA;    string path = "Resources/test_video.mp4";&#xA;    VideoCapture cap(path);&#xA;    Mat img;&#xA;    while (true) {&#xA;        cap.read(img);&#xA;        imshow("Image", img);&#xA;        waitKey(1);&#xA;    }&#xA;    return EXIT_SUCCESS;&#xA;}&#xA;</iostream>

  


  And the photo of the error message :


  


• Get blur effect inside a drawn box using ass format

  18 septembre 2024, par Armen Sanoyan

  I have Nodejs application which generates subtitles file for video editing. The editing is done by ffmpeg. For each word I also generate a backdrop with rounded corners using drawing command. Example of dialog for backdrop.

  


  Dialogue: 0,00:00:38.60,00:00:42.10,Default,,0,0,0,,{\p1\1a&HD8&\c&HE27FA4&\pos(341.07421875,517.5)\an4}  {\p1}m 15 0 b 1202.8515625 .... {\p0}


  


  Now I want to make the backdrop blur.
(Text backdrop by ass formatting)

  


  I have tried to use \blur or \be, but they are for other purpose. Below is reference from the doc

  


  Enable or disable a subtle softening-effect for the edges of the text

  


  Is there any other way to achieve the blurred backdrop. I am ready even to mix ffmpeg commands like boxblur and ass file. I mean separately paint the backdrops and then apply ass subtitles file. Here is an experiment to explain the idea.

  


  [0:v]split=3[base][blur1_in][blur2_in];

[blur1_in]crop=w=100:h=100:x=20:y=40[region1];
[region1]boxblur=luma_radius=10:luma_power=1[blurred_region1];
[base][blurred_region1]overlay=x=20:y=40:enable='between(t,0,5)'[tmp1];

[blur2_in]crop=w=30:h=30:x=20:y=40[region2];
[region2]boxblur=luma_radius=5:luma_power=1[blurred_region2];
[tmp1][blurred_region2]overlay=x=20:y=40:enable='between(t,5,10)'[tmp2];

[tmp2]ass=../logs/ass.ass:fontsdir=../fonts/Audiowide-Regular.ttf[final_video]


  


  The problem in this case is that the corners are not rounded. Could anyone explain to me what is the easiest way to get backdrop with rounded corners an blurred inside

  


• We are hiring engineers to build an awesome product and platform used by millions of people

  16 février 2016, par Piwik Core Team — Uncategorized

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