Is there any way to setup ffmpeg visual studio project using llvm??

[sgxu]

similarly:
cmake -G "Visual Studio 17 2022" -A ARM64 -T ClangCl -Bbuild/windows2022 -H.

or Is there any way to build ffmpeg using ninja ?

[Sibras]

FFmpeg only has a single officially supported build tool and thats using its configure/make files. This project adds a Visual Studio project option which you can open and change the "platform toolset" to clang-cl (if you have clang-cl installed as part of your visual studio installation. However, this hasnt been tested and may cause some issues. ARM64 is also not supported by the VS project files so if you want to compile for arm youll have to use the stock ffmpeg build files (see the ffmpeg official documentation on how to do that)