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In [windows server 2012 R2 x64, python 3.7 64x]
pip install opencv-contrib-python
installed without any error .
and when I try to import it
import cv2
show me this error :
Traceback (most recent call last):
File "test.py", line 1, in <module>
import cv2
File "C:\Program Files\Python37\lib\site-packages\cv2\__init__.py", line 3, in
<module>
from .cv2 import *
ImportError: DLL load failed: The specified module could not be found.
and I see another topic about this error but their solution does not work for me :
- DLL load failed error when importing cv2
- Failure to import cv2 in python : DLL load failed
- and a lot of pages in here
some of them say about that problem because anaconda, and I don't have anaconda even. and many say that problem 32 or 64 version, I try both and disappointment. many about system variables...
what dll failed to load? cv2? why?
what i try till now:
change python version : 3.5, 3.7, 2.7 in 86x and 64x (uninstall complete last version and delete all remain files in program files ... then install new one)
try with another packages like : opencv-python, opencv-contrib, try install specific versions with .whl (in some topic i read about this so install numpy-1.14.5+mkl-cp37-cp37m-win_amd64.whl and opencv_python-3.4.3+contrib-cp37-cp37m-win_amd64.whl but anything not change)
import numpy before cv2 for every test
installed Microsoft Visual C++ 2015 Redistributable Update 3 , 2008 , 2010 , 2017 for 64x
UPDATE
NEXT 2 DAY
I try to manage missing dll base on dependency walker that mention in bellow post, download all dll and put them in system 32, its a good clue but not solve the problem.
DAY 4,5
my next step , trying compile OpenCV in my machine , install visual studio 2012 + cmake and base on document compile 2 version , 64x and 32 , compiling have a lot of problem itself (like missing some lib from c lang and need to install Visual C++ Redistributable for Visual Studio 2012 ...) and I resolve all of them ,then I have 2 success compiled version but both have the same problem with missing dll, the compile process is so slow and give 2 day from me. so if fail on this mission :/ I search for a new way...
DAY 6
my next step is to try to run OpenCV in my machine with docker ( I try but docker windows just install on windows 10 and windows server 2016) so I search for an alternative. I found Vagrant that work like docker but with VM (visual box) today my time spend for this articles, it's amazing, the concept of docker and vagrant is so Attractive, and I play with this like that I have new puzzle :)
first error show on ... and limitless errors go on :
Day 7
Vagrant tests failed too because my windows server 2012 is a vb machine (visual server) and run a visual box in another visual box impossible!
so I need new clues :
Day 8-9
try install vagrant with VMware , I download VMware, unfortunately this plugin is not free (79$) so I try to work with pythonanywhere.com that 'gives you access to machines with a full Python environment already installed.' in this free account, you can't openurl with urllib , and more limit...
so I wanna try to install ubuntu in VMware my self... I read here results after work. it's Impossible with same reason vb (visual box)
This can happen if you are using windows 10 N distribution, the N distributions does not come pre installed with windows media feature pack, which is required after OpenCV version 3.4 and onwards.
The preferred solution is to install the feature pack at : https://www.microsoft.com/en-us/software-download/mediafeaturepack
Be careful to choose the version that works with your current version of windows.
If that is not an option, fall back to an earlier version of OpenCV that does not have dll dependencies, you can do that by:pip install opencv-python=3.3.0.9
Since windows rolled out it's N version this problem has been seen at many places, and has many impacts across the windows environment, the fastest way to identify if you have this problem is open youtube in Edge browser, if it says HTML5 media plugin not found, this is the problem.
Update May 2020: There is a new way to install media pack for Windows 10 N.
https://support.microsoft.com/en-us/help/4562569/media-feature-pack-for-windows-10-n-may-2020
I had the same error (although I compiled OpenCV myself), in my case there were some DLL dependencies missing. You can check that with the program Dependency Walker.
Download Dependency Walker and run it, and open the file cv2.pyd with Dependency Walker, it should be in C:\Program Files\Python37\lib\site-packages\cv2\ if the pip package installed correctly.
This program then scans for dependencies (which may take a few minutes) and it then shows missing DLL files in red.
I have faced the similar issue in Windows Server 2012 r2. After lot of findings I found that mfplat.dll was missing which is related to Window Media Service.
Hence you have to manually install the features so that you can get dll related to window media service.
Turn windows features on or off
Skip the roles screen and directly go to Feature screen
Select "Desktop Experience" under "User Interfaces and Infrastructure"
After this all required dll of opencv would be available.
Python 3.7 may not support some modules.
Try installing python 3.6.4
Using command prompt, "pip install
opencv" or "pip install opencv-python"
Import cv2
Can you try uninstalling opencv and installing it using a wheel file instead? Here is a website that has many versions of OpenCV compiled for windows, search for the one you need and simply install it with pip command.
So if you have Python 3.6 (64 Bit) and wish to install OpenCV 3.4.3 then download the wheel file:
opencv_python‑3.4.3‑cp36‑cp36m‑win_amd64.whl
I had similar issue except that I'm using Anaconda3 and this code here solved it:
conda install -c anaconda py-OpenCV
After 15 days of brain storming, This solution worked for me. And I am sure that it will work for you too. I installed anaconda to use OpenCV 3.1.0. I followed following Steps:
1) I have installed anaconda-5.3 64-bit installer (614.3 MB) which uses python 3.7. You can download anaconda from link: https://www.anaconda.com/download/#windows
2) After installation of anaconda, open anaconda prompt by typing "anaconda prompt" on windows start button. Open with "Run as administrator".
3) You have to create new environment to install and use OpenCV module.Write following commands to create and activate new environment:
>conda create --name myNewEnv python=3.5.0
>activate myNewEnv
"myNewEnv" is the name of new enviroment.
4)Now you need to install prerequisite for OpenCV, which is numpy and then install opencv3. Start internet before executing following commands:
>conda install numpy
>conda install anaconda-client
>conda install --channel https://conda.anaconda.org/menpo opencv3
5)OpenCV3 has been installed. Now, verify installation by executing following commands:(myNewEnv) C:\Users\Nilesh> python
>>>import cv2
>>>cv2.__version__
Follow steps given below, when you want to start OpenCV3 second time onwards:
1) Open "anaconda command promt" from start menu with "run as administrator" rights
2) Type command >activate your_new_environment_name
3) Assume that you want to run file located on desktop, for that write following command:
> cd C:\Users\Nilesh\Desktop
4) Now your working directory is Desktop.
5) Type following command to run any code (for example test.py).
> python test.py
Note: Here, python means version-3.
I hope this solution will work for you.
I had the same problem on Windows Server 2012 R2 x64. I was creating executable file using PyInstaller and got error in runtime:
ImportError: DLL load failed: The specified module could not be found.
After installing "Visual C++ redistributable" 2015 and enabling "Media Foundation" feature my problem was resolved.
There is more informations in documentation: OpenCV Documentation
I was having this problem on Windows. I resolved this error by checking instructions here.
Q: Import fails on Windows: ImportError: DLL load failed: The specified module could not be found?
A: If the import fails on Windows, make sure you have
Visual C++ redistributable 2015 installed.
If you are using older Windows version than Windows 10 and latest system updates are not installed, Universal C Runtime might be also required.
Windows N and KN editions do not include Media Feature Pack which is required by OpenCV. If you are using Windows N or KN edition, please install also Windows Media Feature Pack
i was suffering from the same problem "DLL load failed" after reading tons of answers and articles i got a solution.
i don't know this works for you or not but give it a try.
tools and versions i used: anaconda - 5.3.1, python - 3.7, win 10 (64 bit)
Steps i performed :
step1:i installed opencv 3.4.4 from here
then extract into C drive (you can do wherever you want)
step2: copy cv2.pyd file from [C:\opencv\build\python\cv2\python-3.7] here to [C:\Users\"user-name"\Anaconda3\Lib\site-packages] here.
step3: run dependency walker to detect which dll files are missing,
after running dependency walker in my case it showed two dll files are not loading, they are (1)OPENCV_WORLD344.DLL and (2)IESHIMS.DLL.
i don't know about your situation but you can do this-> find files name using dependency walker then find their path and follow step4.
step4: open System property->Advanced->Environment variables, now edit path and add C:\opencv\build\x64\vc14\bin (in my case this was the place where OPENCV_WORLD344.DLL is stored) and after doing this, import cv2 in python.
If my answer does not work then add a comment.
It helps me pip install opencv-contrib-python Anaconda Prompt, python 3.7.1 cv2 4.1.1
I was having the same issue. I resolved this error by downgrading open cv.
pip install opencv-python==3.3.0.9
its worked well for me.*
Answer is Need to put cv2.pyd file to your virtual environment.
need to put under two folder of envs,
first is under DLLS folder and
Second is under Lib/site-packages
To get cv2.pyd > download from this link https://sourceforge.net/projects/opencvlibrary/ and then extract the download file
You will get opencv folder, after that go inside opencv folder like Downloads\opencv\build\python\2.7 and go one deeper folder depend on your 32 or 64 window version
Copy cv2.pyd Important **** after copying cv2.pyd file to your envs, you need to rename cv2.pyd to _cv2.pyd
I was having this problem on Windows Server 2008R2 fresh install and took almost a day to resolve, as was trying with many hits and trials finally I found solution somewhere in internet (not stackoverflow)
Installed Windows Media Feature Pack for 2008R2 then installed Server Manager-> Features-> Add Features-> Desktop Experience
Server Manager-> Features-> Add Features-> Desktop Experience
and Ink and Handwriting Services.
Besides check list includes
Visual C++ redistributable 2015
Universal C Runtime
Hopefully its will help save time
Installing Python version 3.6 and then installing opencv with the command:
pip install opencv-python==3.3.0.9 resolved this issue for me
All you need is python 3.6.
I've been looking for solution for last 3 days and my problem was solved when i installed python 3.6.7.
After installing python 3.6 you can simply run pip install opencv-python.
Source: https://www.geeksforgeeks.org/setup-opencv-with-pycharm-environment/
Just ran into this problem of cv2 importable from my conda environment but not through the "same" environment in jupyter. The error I was getting was that it couldn't load the dll.
Additionally, I could not get opencv installed through jupyter, even using:
import sys
!conda install --yes --prefix {sys.prefix} numpy
I checked my path using:
import os
os.path
in both my shell and jupyter. They were the same(!).
I was finally able to get things working by running the command:
conda install nb_conda
in my conda environment, as outlined here: https://github.com/udacity/P1_Facial_Keypoints/issues/13
This was eye opening as it created a new install of jupyter note books associated with my env instead of anaconda, with five(!) environments to choose from when creating a page. There were three that seemed to be associated with my conda environment. Interestingly, now it only shows the one named environment as an option when creatin a new notebook again in jupyter (the one associated with the env), but it successfully imports cv2.
For a good read on why this is happening with jupyter:
https://jakevdp.github.io/blog/2017/12/05/installing-python-packages-from-jupyter/
Came here from Windows 10N, upgraded to Windows 11. Had to install Media Feature Pack under Settings -> Apps -> Optional Features -> Add an optional feature.
Windows settings
I'm trying to install cx_freeze on python, and its just doesn't seem to work. I've tried both through pip in the command line (python -m pip install cx_freeze) and through pycharm community add packages.
At first it gave the notorious unable to find vcvarsall.bat - but I installed visual studios latest with all the c++ compilers.
Now it gives another error message - cxfreeze-postinstall does not exist:
enter image description here
Please help me!
Well, I tried installing the win32 version - and it worked... Have no idea why, since my computer is a 64bit OS with a 64bit processor, and I've only installed 64bit version of stuff until now.
UPDATE: well, the cx_freeze installs, but I still can't manage to get an executable file. I think maybe this module/package is not compatible with python 3.5 - I will later try it on 3.4 and see if it works.
UPDATE_2.0: Works great on Python 3.4 - so I guess there's some problem with the package compatibility with Python 3.5
I am trying to install python on my system but facing some issues.
I have installed OpenCV 3.0.0 for Windows x64 bit system and now i am trying to install python 2.7.5 on my system and i also have installed numpy 1.7.1.
Then i copied 'cv2.pyd' from my OpenCV folder to python folder, now in order to configure them i have to import cv2 file but this error is coming when i try that.
can anyone help me in this i am new in this. Shall i try to work with latest version of python and numpy for my windows x64 system?
Thanks
Here's a complete way of installing OpenCV with Python
Download:
Python-2.7.11 from https://www.python.org/downloads
numpy-1.8.0-win32-superpack-python2.7.exe from https://sourceforge.net/projects/numpy/files/NumPy/1.8.0/
matplotlib-1.3.0.win32-py2.7.exe from https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.3.0/
Install Python-2.7.11
Copy the .exe of numpy, matplotlib and opencv and paste them in C:\Python27
Run numpy-1.8.0-win32-superpack-python2.7.exe
Run matplotlib-1.3.0.win32-py2.7.exe
In Python Idle, execute import numpy to ensure that numpy is correctly installed.
Run opencv-3.1.0.exe
Goto opencv/build/python/2.7/x86 folder. Copy cv2.pyd to C:/Python27/lib/site-packeges.
copy ffmpeg zip folder to C:\
Extract ffmpeg in C:\ffmpeg
Copy extracted ffmpeg folder to C:\Python27
Locate opencv_ffmpeg310_64.dll and opencv_ffmpeg310.dll and copy these at C:\Python27
(Most likely opencv_ffmpeg310.dll is more important than opencv_ffmpeg310_64.dll but not sure. So copy both.)
Go to system Variables and set path C:\Python27; C:\Python27\ffmpeg\bin
After lots of research and struggle i found out what the issue was.
My system is Windows x64 bit but this python and numpy most of the times don't work well with Windows x64 bit systems.
So i first i configured my OpenCV as x86, though my system is x64 bit. After that i download 32 bit python and numpy and configured the same with OpenCV and it worked very well.
Thanks !
I'm using python 2.7.2 and windows 7. I searched through internet, helps and other sources but i can't find an answer to my problem.
One of my source imports tkinter, and this one imports _tkinter. At this moment it say ImportError DLL load failed:
Traceback (most recent call last): File "NERO/show_image.py", line 13,
in <module> import Tkinter File "C:\Python27\lib\lib-tk\Tkinter.py", line 38,
in <module> import FixTk File "C:\Python27\lib\lib-tk\FixTk.py", line 65,
in <module> import _tkinter ImportError: DLL load failed: %1 is not a valid Win32 application.
2012-Jan-04 12:27:21.889374 (M) [python] Finished process
I searched _tkinter and i found it in Python27/libs as a lib file.
On many sites it says to install tk/tcl or tkinter, but I don't find a separate installation for windows.
Using Windows x86 MSI Installer (2.7) from http://www.python.org/getit/releases/2.7/. In windows 7 64-bit. The python version is 32 bit.
I had a similar problem importing Tkinter on Windows 7 64-bit - seems that the 64-bit library was still in the libs folder from a previous 64-bit python install.
Uninstalling 64-bit python properly and then repairing with the 32-bit installer fixed the problem for me - you don't need to use 64-bit python.
Re-install Python.
If this still doesn't work, there is another simple solution:
Uninstall your current python. Delete Python27 folder entirely from your C: drive.
Download and install the 64-bit version of Python from http://www.python.org/download/.
Next time do not mix your 32-bit application with 64-bit OS whenever a 64-bit choice for the application is available!
I was getting this error while trying to use matplotlib in a simple application.
Uninstall Python and remove its folder from your C-Drive.
Download and Install 64bit python.
Follow this to install pip on your machine.
http://www1.cmc.edu/pages/faculty/alee/cs40/penv/installFlaskOnWindows.html
This was finally what worked for me
I had the same issue and was able to uninstall Python 2.7 (using the Windows 7 'uninstall' service) and then reinstall it from here:
python-2.7.6.msi
Also, if you're concerned about ensuring 64bit conformance across your python libraries then you may find the following library list site to be a great resource. It has numerous 64bit versions of python libraries.
Please don't reinstall Python for this. A simple fix can resolve this issue as below:
Find the matplotlibrc file at Python27\Lib\site-packages\matplotlib\mpl-data\matplotlibrc
Open using notepad
Change the backend parameter to 'backend: Qt5Agg'
And it will be solved. No need to reinstall.
SOLVED without reinstalling anything:
1-add these 3 lines to your setup.py :
...
import os
os.environ['TCL_LIBRARY']= r'C:\<your python folder>\tcl\tcl8.6'
os.environ['TK_LIBRARY'] = r'C:\<your python folder>\tcl\tk8.6'
...
setup(
...
)
2- copy tcl86t.dll and tk86t.dll from C:\<your python folder>\DLLs to <your project folder>(where you have batch file, setup.py).
3- add "include_files": ["tcl86t.dll", "tk86t.dll"] to option in your setup.py, something like:
options= { 'build_exe':{'packages':[.....], "include_files": ["tcl86t.dll", "tk86t.dll"]}},
note: if you didn't find tcl86t.dll and tk86t.dll in DLLs folder as mentionned in step 2, then try again to search for it,but using research tab in DLLs folder this time.
I had a similar problem. My Python version was 2.7.12 and 64bit and I was using Windows 10, 64bit OS.
I tried to import Tkinter and what I got back was
ImportError: DLL load failed: %1 is not a valid Win32 application
I uninstalled Python and removed all traces of it. I then installed Python 2.7.14 (32bit) and this seems to have solved my problem. I don't get this error message any longer.
I have a lot of installed python packages on my machine so I did not want to unistall and reinstall the whole python, I did as follow and the problem was solved:
Change your C:\Python27 home folder to another name, for example C:\Python27_old
Install a new Python27 on your computer (32 bit)
Copy tcl and DLLs folder from the fresh installed python to the old one (Before this step make a copy of tcl and DLLs of C:\Python27_old to recover it if you face any problem in the next steps)
C:\Python27\tcl Copy and replace to C:\Python27_old
C:\Python27\DLLs Copy and replace to C:\Python27_old
Delete the C:\Python27
Rename the C:\Python27_old to the C:\Python27
Please pay attention to get a backup form your tcl and DLLs folder to recover it in case you face any further problem.
Removing 64 bit python and doing a repair on 32 bit python worked for me. OS: 64 bit Windows Server 2008.
I also met this issue, because I use 64-bit python. Maybe python 64-bit doesn't have a good support.
My way is to solve it:
Uninstall python 64-bit.
Install python 32-bit.
Uninstall the 64-bit package. pip uninstall xxx.
Install the 32-bit package. pip install xxx.
For Windows 10,
Uninstall all versions of Python
Install Python 3.x (your latest version) with PATH variable
python -mpip install -U matplotlib
Install Python x.x (your other versions) without PATH variable
Done. Try running your scripts again.
If Python was installed by OsGeo4W then you should also install the python-tcltk and/or python3-tcltk packages in the OsGeo4W setup tool.
I'm trying to install said library for use with Python. I tried downloading the executable installer for Windows, which runs, but says it doesn't find a Python installation. Then tried registering (http://effbot.org/zone/python-register.htm) Python, but the script says it can't register (although the keys appear in my register).
Then I tried downloading the source package: I run the setup.py build and it works, but when I run setup.py install it says the following:
running install
running build
running build_py
running build_ext
building '_imaging' extension
error: Unable to find vcvarsall.bat
What can I do?
UPDATE (May 2014): Like said by some comments and answers, PIL is currently unmantained, and the way to go now is to use Pillow (https://pypi.python.org/pypi/Pillow/, pip install pillow).
I found a working win7 binary here: Unofficial Windows Binaries for Python Extension Packages It's from Christoph Gohlke at UC Irvine. There are binaries for python 2.5, 2.6, 2.7 , 3.1 and 3.2 for both 32bit and 64 bit windows.
There are a whole lot of other compiled packages here, too.
Be sure to uninstall your old PILfirst.
If you used easy_install:
easy_install -mnX pil
And then remove the egg in python/Lib/site-packages
Be sure to remove any other failed attempts. I had moved the _image dll into Python*.*/DLLs and I had to remove it.
I've just had the same problem (with Python 2.7 and PIL for this versions, but the solution should work also for 2.6) and the way to solve it is to copy all the registry keys from:
HKEY_LOCAL_MACHINE\SOFTWARE\Python
to
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Python
Worked for me
solution found at the address below so credits should go there:
http://effbot.slinkset.com/items/Adding_Python_Information_to_the_Windows_Registry
Compiling PIL on Windows x64 is apparently a bit of a pain. (Well, compiling anything on Windows is a bit of a pain in my experience. But still.) As well as PIL itself you'll need to build many dependencies. See these notes from the mailing list too.
There's an unofficial precompiled binary for x64 linked from this message, but I haven't tried it myself. Might be worth a go if you don't mind the download being from one of those slightly dodgy file-upload sites. Other than that... well, you could always give up and instead the 32-bit Python binary instead.
If you installed a win64 python, you need a win64 PIL. The official PIL download site only has win32, as far as I can tell. The win32 installer will not see your 64-bit python installation.
No amount of tinkering with permissions or redistributables will fix this. You could use the win32 python instead (the Win64 python is mutant anyhow; Microsoft decided that C 'long' should be 32 bits in their 64-bit world, so python 'ints' are only 32 bits in Win64 python).
Since sizeof(long)!=sizeof(ptr) in win64, porting C extensions can be problematic, and will not be the same as porting them to linux 64. E.g. it seems that Win64 numpy is experimental/broken whereas linux64 numpy has been fine for years. My recommendation is if you use win64, stick with win32 python. If you want 64-bit python use linux.
I think I had a similar problem in the past, with another python library. I believe that it was a windows permission issue. Try adding "Users" to your python directory, and give them full access.
Make sure you have the Visual C++ Redistributable package installed on your machine.
Just got this error msg on my 32 bit Windows - I read the FAQ here: http://pythonware.com/products/pil/faq.htm and this sort of indicates that Windows is funny. Looked again at install pg and downloaded the Windows executable for Python26 # Python Imaging Library 1.1.7 for Python 2.6 (Windows only) - and the _imaging module gets installed when you run this. Should solve problem. So you can't just do the python setup.py install routine on: Python Imaging Library 1.1.7 Source Kit (all platforms) (November 15, 2009).
I was having the same problem so I decided to download the source kit and install it according to how you posted above...
Downloaded Source Kit
Opened command prompt on that folder and typed python setup.py build
Then I typed python setup.py install
It worked perfectly!
Now, some notes: when I typed python setup.py build, I saw that Microsoft Visual Studio v9.0 C compiler was being used to build everything.
So probably it's something with your compiler not correctly configured or something...
Anyways, that worked with me so thank you!
Pillow is new version
PIL-1.1.7.win-amd64-py2.x installers are available at
http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil
http://www.lfd.uci.edu/~gohlke/pythonlibs/
press contrl F
type Pillow‑2.4.0.win‑amd64‑py3.3.exe
then click and downloadd the 64 bit version
Pillow is a replacement for PIL, the Python Image Library, which provides image processing functionality and supports many file formats.
Note: use from PIL import Image instead of import Image.
PIL‑1.1.7.win‑amd64‑py2.5.exe
PIL‑1.1.7.win32‑py2.5.exe
Pillow‑2.4.0.win‑amd64‑py2.6.exe
Pillow‑2.4.0.win‑amd64‑py2.7.exe
Pillow‑2.4.0.win‑amd64‑py3.2.exe
Pillow‑2.4.0.win‑amd64‑py3.3.exe
Pillow‑2.4.0.win‑amd64‑py3.4.exe
Pillow‑2.4.0.win32‑py2.6.exe
Pillow‑2.4.0.win32‑py2.7.exe
Pillow‑2.4.0.win32‑py3.2.exe
Pillow‑2.4.0.win32‑py3.3.exe
Pillow‑2.4.0.win32‑py3.4.exe