Repository: opencv
Issue: Is there any official release or guide to build opencv with nvcuvid?
Labels: feature,category: documentation

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##### System information (version)
<!-- Example
- OpenCV => 4.5.2
- Operating System / Platform => linux
- Compiler => gcc 7.3.0
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- OpenCV => 4.5.2
- Operating System / Platform => linux
- Compiler => gcc 7.3.0

##### Detailed description
Too many errors, hard to compile , no official guide.
Bad experience to compile opencv with nvcuvid.
Easy for users to build with cuda for ffmpeg. https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/
But so bad for opencv.
##### Steps to reproduce

  export CMAKE_ARGS="-DCMAKE_SKIP_RPATH=TRUE \
          -DBUILD_TESTS=OFF \
          -DBUILD_DOCS=OFF \
          -DBUILD_EXAMPLES=OFF \
          -DBUILD_opencv_world=OFF \
          -DDBUILD_SHARED_LIBS=ON \
          -DWITH_ADE=OFF \
          -DBUILD_OPENCV_GAPI=OFF \
          -DOPENCV_GENERATE_PKGCONFIG=ON \
          -DCMAKE_GENERATE_PKGCONFIG=YES \
          -DCMAKE_BUILD_TYPE=RELEASE \
          -DBUILD_opencv_python3=ON \
          -DBUILD_opencv_python2=OFF \
          -DOPENCV_PYTHON3_VERSION=${PY_VER_MAJ} \
          -DBUILD_opencv_java=OFF \
          -DPYTHON3_NUMPY_INCLUDE_DIRS=$(python -c "import numpy; print (numpy.get_include())") \
          -DOPENCV_SKIP_PYTHON_LOADER=OFF \
          -DWITH_IPP=OFF \
          -DWITH_TIFF=ON \
          -DWITH_OPENEXR=OFF \
          -DWITH_FFMPEG=ON \
          -DWITH_CUDA=ON \
          -DWITH_NVCUVID=ON \
		  -DCUDA_CUDA_LIBRARY=true \
          -DWITH_VTK=OFF

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 - [x] There is reproducer code and related data files: videos, images, onnx, etc
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