Does compiling Decord from source depend on FFmpeg?

[Howe-Young]

Hi Decord team,
Does compiling Decord from source depend on FFmpeg, or is FFmpeg required only for compiling the CUDA version of Decord?
When I enabled CUDA compilation, the following error was reported(command: cmake .. -DUSE_CUDA=ON -DCMAKE_BUILD_TYPE=Release -DUSE_CUDA=/usr/local/cuda):

CMake Error at cmake/modules/FFmpeg.cmake:27 (message):
  Unable to find FFMPEG automatically, please specify FFMPEG location
Call Stack (most recent call first):
  CMakeLists.txt:91 (include)

I would greatly appreciate it if you could reply.