ERROR : failed to run custom build command for ffmpeg-sys-next v6.0.1

[0xhappyboy]

environment : win10 x64 intel
tool chain : cargo built-in stable-x86_64-pc-windows-msvc
describe : when I set all the environment variables as described on the wiki and compiled the project, the above exception occurred.

[Coddeus]

Struggled on this too.
It seems I needed to add

[env]
FFMPEG_DIR = { value = "ffmpegfolder", relative = true }

in .cargo/config.toml. Setting the environment variable to "./ffmpegfolder" (and a few variations, including absolute path I believe) from the command line didn't seem to work.

I also needed to add the av*.dll and sw*.dll in the root of the project (even in "static" mode, which I'm not able to make work).
Hope this works for you

[stonexwx]

I also encountered this problem, the original issue was #138 and then after installation it became error: failed to run custom build command for 'ffmpeg-sys-next v6.1.0', I don't know how to solve this problem now