Build and Install OpenCV 4 on Windows 10

Sorry about the mouse pointer not being recorded! This issue will be resolved in future videos. It shouldn't affect your ability to follow the steps, however.
In this tutorial, I will show you, step-by-step, how to build and install version 4 of the OpenCV library on Microsoft Windows.
Blog Post: www.hackeradam.com/installing...
Links:
* Visual Studio Community: visualstudio.microsoft.com/vs...
* Cmake: cmake.org/
* OpenCV Github: github.com/opencv/opencv
* OpenCV_Contrib Github: github.com/opencv/opencv_contrib

[@helmandollarautodiagnostic6519]

Very well done video buddy, step by step was very easy to follow along with. Looking forward to some more.

[@vincentparkes2513]

Great video, knowledgeable delivery, nice pace. Please carry on and make some more. You have my thumbs up.

[@rewardx]

HOLY MOLY THAT BUILD TAKES AGES BOIIIIIIISSS!!!

[@burgerking220]

Took like 5 mins. what are you talking about?

[@mohanpannirselvam4102]

well done sir. Like your attitute. keep doing more. you will become big

[@lettomobile98]

Very usefull and well done tutorial, thanks a lot!

[@davidbranker2132]

Thanks for the tutorial!

[@qzorn4440]

really nice video.. i have been using the pyimgesearch examples for the raspberry-pi and decided to go back to opencv with the visual studio 2019 version. thanks for the great info...:)

[@qzorn4440]

try paul mcwhorter, lots of good videos kzbin.info/www/bejne/Z3elqnyOl72dpK8 thanks

[@Grayando1]

Great tutorial, easy to follow, got further with this one than any other! one problem now, no VS files in the build folder? So I can go on to the next step... any cles boss?

[@mab623]

Thanks for the guide! I am having some trouble after I include OpenCV in my codebase. I can use things like cv::Mat, but when I try to use cv::erode, I get a linker error. There seems to be more libs in build/lib/debug then are present in the install directory. Could that be the issue?

[@adnanalsalihi9944]

Nice video, i need your help.. can i build facial expression recognition program through the steps you showed here? If yes can you please recommend a video for me. Thanks a lot.. keep going

[@goodman4532]

nice video! hope to see your new video!

[@ryfialazhar9098]

at 6:04, after choosing release to show the loading what we press? my release lib version is nothing in the library folder. can you help me, please?

[@theqihuasyazwan]

Awesome video thank you! I have an error code MSB8066 when building in both debug and release. Any help would be appreciated!

[@danielletalla5254]

please i have a problem i install it and i can show image but not video. and i saw that many Gstreamer on cmake are missing example:GSTREAMER_app_LIBRARY-NOTFOUND,GSTREAMER_base_LIBRARY.... and in visual studio i cannot play a video because the coresponding dll are already missing. thanks if you could have a solution

[@ajelvani]

I’m stuck on and needs some help. So what exactly do I do with the install folder after I build?

[@toptenofficial6671]

Me too🤣

[@jingyugao]

I follow your steps by Visual Studio 2019, however, something went wrong while building the INSTALL under CMake Targets Including：“can't open vgg_generated_1 opencv_xfeatures2d20.i" etc. Could you help me what was wrong ?

[@bittupaul100]

Thank you

[@victorbuch8403]

So are you going to make the tutorial about how to use those files we get in the end?

[@adamhacks8437]

That is the intention, yes. I should have some time to record more for this series this week ;)

[@Alex1712111]

When I come to the part where I want to add the modules into -> OPENCV_EXTRA_MODULES_PATH, cmake crashes after entering the opencv_contrib-master path. Any ideas?

[@KratosPlay94]

Just wrote the path to the file by hand or copy-paste it.. when you copy the path sometime he wrote the path like c:desktop\opencv\.. then you have to switch the "\" with "/". Like c:desktop/opencv/..

[@huypdm266]

hi ! im use opencv4.4.0 and the same with opencvcontrib but when i do all step in lib i dont have any file d.lib what can i do to resolve it?

[@TylerMatthewHarris]

you might need to add C:\opencv\x64\vc16\bin to your path environment variables if it can't find .dll's

[@johncaling6150]

I get error LNK1181. How to fix this?

[@asmazarrouk5492]

laptop crashed when i tried building the solution , can i skip the process ? or will it affect my installation

[@martinarraztio]

In the first debug step with vs, i have an error: LINK : fatal error LNK1104: cannot open file 'opencv_core242d.lib', what i should do?

[@adamhacks8437]

It sounds like either the path to the library files are either not added to VS or is incorrect. You might try referencing this Stack Overflow thread: stackoverflow.com/questions/21744464/opencv-error-link-fatal-error-lnk1104-cannot-open-file-opencv-core231d-lib

[@martinarraztio]

@@adamhacks8437 Finally installed Visual Studio 2019, and it worked with no problems

[@assafkeller]

what need to be done so it work on pycharm?

[@niektuytel9519]

please use the source code of the website atm the github do not contain the include folder so will always fail

[@devdattasupnekar1050]

how to build dlib with cuda for python

[@m-vini]

Hii, this tutorial work for visual studio 2019??

[@qwertyui118]

Yep, just download cmake v3.15.0-rc2 from cmake.org/download/ . This version can generate the solution files for visual studio 2019

[@claracardosoferreira5595]

@@qwertyui118 i dont see v3.15.0-rc2 there. Would there be another one?

[@flaparoundfpv8632]

@@claracardosoferreira5595 Dude, that was a year ago. It's been superseded.

[@idej637]

I got a bunch Errors when building the release, many missing modules, anyone had this problem?

[@Be4stly15]

i had it

[@rip8392]

It's because you do not run Visual Studio as administrator, this worked for me

[@idej637]

Oh really? Imma try that, thanks

[@andriskuciks5048]

I tried to run VS as admin, but still got the same bunch of errors, anyone resolved this?

[@PumpiPie]

Extra modules dosent work for me. Cmake creates a error.

[@adamhacks8437]

What's the error?

[@toptenofficial6671]

Also mine

[@toptenofficial6671]

It's : Error in configuration process, project files may be invalid

[@pitasalexandru7063]

@@toptenofficial6671 i have this error too

[@weirjwerijrweurhuewhr588]

You guys sure you're selecting the 'modules' folder and not the entire 'contrib' one?

[@Alik-rq4ym]

Why using cmake?

[@dimasveliz6745]

hey if anyone gets an error while building related with python, check out whether python 2.7 is up within the environment variables, that should solve the problem... happens when you installed Anaconda after python 2.7. Cheers and thank you very much for the video :) !

[@prajaysapkale484]

What python version should be installed?