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DVR-Scan works on Windows, Linux, and OSX, and requires Python 3.8 or higher. Linux users may need to install the `python3-tk` package (e.g. `sudo apt-get install python3-tk`) to run the region editor.
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## Windows Distribution<spanclass="dvr-scan-download-icons">:fontawesome-brands-windows:</span>
The installer is recommended for most users. Windows builds include all required dependencies to run DVR-Scan. Only 64-bit builds are available.
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<h3>CUDA®-Enabled Builds (Experimental)</h3>
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Nvidia CUDA® builds experimental and outdated due to difficulty producing binary distributions covering all systems and GPU architectures. If you require CUDA support, the Python version of DVR-Scan is compatible with any CUDA® enabled version of the `opencv-python` module. You can get better performance or use DVR-Scan on a wider variety of GPUs if you build the module on your system, with the latest SDK version.
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GPU support currently requires a development environment setup including the Nvidia CUDA® SDK.
DVR-Scan works with CUDA graphics cards if you are using the Python distribution, and you have a CUDA-enabled verison of the `opencv-python` package. Unfortunately pre-built binaries are not available, so this requires that you build from source (there are various tutorials online for how to do this).
Make sure to set `-b MOG2_CUDA` when running DVR-Scan (e.g. `dvr-scan -i video.mp4 -b MOG2_CUDA`).
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When available, you should see `cv2.cuda: Installed` under the features list when running `dvr-scan --version`. Make sure to set `-b MOG2_CUDA` when running DVR-Scan (e.g. `dvr-scan -i video.mp4 -b MOG2_CUDA`).
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