Ошибка CMake для сборки OpenCV в Windows

Question

https://www.youtube.com/watch?v=9xFTXSDw_9U

Я использовал Python версию 3.7

CMake самую последнюю

OpenCV версия 4.1.0

OpenCV_contrib 4.1.0

Я собрал OpenCV, обратившись к видео по ссылке, но обнаружил следующую ошибку:

CMake Warning at cmake/OpenCVDownload.cmake:193 (message):
  IPPICV: Download failed: 22;"HTTP response code said error"

  For details please refer to the download log file:

  C:/opencv/build/CMakeDownloadLog.txt

Call Stack (most recent call first):
  3rdparty/ippicv/ippicv.cmake:42 (ocv_download)
  cmake/OpenCVFindIPP.cmake:243 (download_ippicv)
  cmake/OpenCVFindLibsPerf.cmake:12 (include)
  CMakeLists.txt:773 (include)

CMake Warning at cmake/OpenCVDownload.cmake:193 (message):
  ADE: Download failed: 22;"HTTP response code said error"

  For details please refer to the download log file:

  C:/opencv/build/CMakeDownloadLog.txt

Call Stack (most recent call first):
  modules/gapi/cmake/DownloadADE.cmake:10 (ocv_download)
  modules/gapi/cmake/init.cmake:16 (include)
  cmake/OpenCVModule.cmake:312 (include)
  cmake/OpenCVModule.cmake:375 (_add_modules_1)
  modules/CMakeLists.txt:7 (ocv_glob_modules)

 For details please refer to the download log file:

  C:/opencv/build/CMakeDownloadLog.txt

Call Stack (most recent call first):
  3rdparty/ffmpeg/ffmpeg.cmake:20 (ocv_download)
  modules/videoio/cmake/detect_ffmpeg.cmake:14 (download_win_ffmpeg)
  modules/videoio/cmake/init.cmake:3 (include)
  modules/videoio/cmake/init.cmake:24 (add_backend)
  cmake/OpenCVModule.cmake:312 (include)
  cmake/OpenCVModule.cmake:375 (_add_modules_1)
  modules/CMakeLists.txt:7 (ocv_glob_modules)

CMake Warning at cmake/OpenCVDownload.cmake:193 (message):
  FFMPEG: Download failed: 22;"HTTP response code said error"

  For details please refer to the download log file:

  C:/opencv/build/CMakeDownloadLog.txt

Call Stack (most recent call first):
  3rdparty/ffmpeg/ffmpeg.cmake:20 (ocv_download)
  modules/videoio/cmake/detect_ffmpeg.cmake:14 (download_win_ffmpeg)
  modules/videoio/cmake/init.cmake:3 (include)
  modules/videoio/cmake/init.cmake:24 (add_backend)
  cmake/OpenCVModule.cmake:312 (include)
  cmake/OpenCVModule.cmake:375 (_add_modules_1)
  modules/CMakeLists.txt:7 (ocv_glob_modules)

Помогите, пожалуйста.

Answer 1

Согласно журналам, некоторые загрузки не выполняются: HTTP response code said error

Программа установки пытается, например, загрузить IPPICV из https://raw.githubusercontent.com/opencv/opencv_3rdparty/${IPPICV_COMMIT}/ippicv/, учитывая тот факт, что на момент написания этого ответа GitHub испытывает сбоя, эта проблема может исчезнуть, как только GitHub снова заработает (https://www.githubstatus.com/)