How to build OpencvSharp for Windows with Gstreamer

[JuanDYB]

I'm trying to build OpenCvSharp opencv_files for windows with Gstreamer backend.

I tryed to follow instructions but I'm having problems with vcpkg.
I don't know why it's neccesary to install vcpkg but I'm having the followinfg errors.

1. I have cloned vcpkg to C:\Cmake\vcpkg
2. Execute .\vcpkg\bootstrap-vcpkg.bat
3. Execute .\vcpkg.exe install tesseract:x64-windows-static

The progress start and install dependencies but stops here.

CMake Error at scripts/cmake/vcpkg_download_distfile.cmake:32 (message):
 
      Failed to download file with error: 1
      If you are using a proxy, please check your proxy setting. Possible causes are:
 
      1. You are actually using an HTTP proxy, but setting HTTPS_PROXY variable
         to `https://address:port`. This is not correct, because `https://` prefix
         claims the proxy is an HTTPS proxy, while your proxy (v2ray, shadowsocksr
         , etc..) is an HTTP proxy. Try setting `http://address:port` to both
         HTTP_PROXY and HTTPS_PROXY instead.
 
      2. If you are using Windows, vcpkg will automatically use your Windows IE Proxy Settings
         set by your proxy software. See https://github.com/microsoft/vcpkg-tool/pull/77
         The value set by your proxy might be wrong, or have same `https://` prefix issue.
 
      3. Your proxy's remote server is out of service.
 
      If you've tried directly download the link, and believe this is not a temporary
      download server failure, please submit an issue at https://github.com/Microsoft/vcpkg/issues
      to report this upstream download server failure.
 
 
Call Stack (most recent call first):
  scripts/cmake/vcpkg_download_distfile.cmake:270 (z_vcpkg_download_distfile_show_proxy_and_fail)
  scripts/cmake/vcpkg_from_github.cmake:106 (vcpkg_download_distfile)
  ports/liblzma/portfile.cmake:1 (vcpkg_from_github)
  scripts/ports.cmake:175 (include)
 
 
error: building liblzma:x64-windows-static failed with: BUILD_FAILED
Elapsed time to handle liblzma:x64-windows-static: 447 ms
Please ensure you're using the latest port files with `git pull` and `vcpkg update`.
Then check for known issues at:
https://github.com/microsoft/vcpkg/issues?q=is%3Aissue+is%3Aopen+in%3Atitle+liblzma
You can submit a new issue at:
https://github.com/microsoft/vcpkg/issues/new?title=[liblzma]+Build+error+on+x64-windows-static&body=Copy+issue+body+from+C%3A%2FCMake%2Fvcpkg%2Fvcpkg%2Finstalled%2Fvcpkg%2Fissue_body.md