# Errors: !\_img.empty() in function ‘cv::imwrite’ and (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support **URL:** \ **Category:** Uncategorized\ **Tags:** programming\ **Created:** [September 5, 2023, 3:30pm UTC](https://forum.opencv.org/t/errors-img-empty-in-function-cv-imwrite-and-2-unspecified-error-the-function-is-not-implemented-rebuild-the-library-with-windows-gtk-2-x-or-cocoa-support/14449 "2023-09-05T15:30:44Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Aman\_Joharapurkar](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/aman_joharapurkar/32/8654_2.png) [@Aman\_Joharapurkar](https://forum.opencv.org/u/Aman_Joharapurkar)\ **Post date:** [September 5, 2023, 3:30pm UTC](https://forum.opencv.org/t/errors-img-empty-in-function-cv-imwrite-and-2-unspecified-error-the-function-is-not-implemented-rebuild-the-library-with-windows-gtk-2-x-or-cocoa-support/14449/1 "2023-09-05T15:30:44Z")
Code : cap = cv2.VideoCapture(0) for imgnum in range(number\_images): print(‘Collecting image {}’.format(imgnum)) ret, frame = cap.read() imgname = os.path.join(IMAGES\_PATH,f’{str(uuid.uuid1())}.jpg’) cv2.imwrite(imgname, frame) cv2.imshow(‘frame’, frame) time.sleep(0.5) ``` if cv2.waitKey(1) & 0xFF == ord('q'): break ``` cap.release() cv2.destroyAllWindows() ## Sometimes I am getting the below error Collecting image 0 error Traceback (most recent call last) Cell In[6], line 6 4 ret, frame = cap.read() 5 imgname = os.path.join(IMAGES\_PATH,f’{str(uuid.uuid1())}.jpg’) ----\> 6 cv2.imwrite(imgname, frame) 7 cv2.imshow(‘frame’, frame) 8 time.sleep(0.5) error: OpenCV(4.8.0) D:\a\opencv-python\opencv-python\opencv\modules\imgcodecs\src\loadsave.cpp:787: error: (-215:Assertion failed) !\_img.empty() in function ‘cv::imwrite’ ## and sometimes Collecting image 0 error Traceback (most recent call last) Cell In[4], line 7 5 imgname = os.path.join(IMAGES\_PATH,f’{str(uuid.uuid1())}.jpg’) 6 cv2.imwrite(imgname, frame) ----\> 7 cv2.imshow(‘frame’, frame) 8 time.sleep(0.5) 10 if cv2.waitKey(1) & 0xFF == ord(‘q’): error: OpenCV(4.8.0) D:\a\opencv-python\opencv-python\opencv\modules\highgui\src\window.cpp:1272: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function ‘cvShowImage’ My video capture device number is also right. ---
**Author:** ![Sagar\_Kumar](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/sagar_kumar/32/8761_2.png) [@Sagar\_Kumar](https://forum.opencv.org/u/Sagar_Kumar)\ **Post date:** [September 23, 2023, 7:16am UTC](https://forum.opencv.org/t/errors-img-empty-in-function-cv-imwrite-and-2-unspecified-error-the-function-is-not-implemented-rebuild-the-library-with-windows-gtk-2-x-or-cocoa-support/14449/2 "2023-09-23T07:16:17Z")
you resolved this issue, i am facing the same issue