Hi Matteo,
[Debug ] <Mlt::Controller::Controller> begin[libprotobuf ERROR google/protobuf/descriptor_database.cc:120] File alreadyexists in database: opencv-caffe.proto [libprotobuf FATAL google/protobuf/descriptor.cc:1382] CHECK failed: GeneratedDatabase()->Add(encoded_file_descriptor, size): terminate called after throwing an instance of 'google::protobuf::FatalException'what(): CHECK failed: GeneratedDatabase()->Add(encoded_file_descriptor,size): Aborted
I am not able to reproduce the problem on my system. However the error message leads me to:
https://github.com/szagoruyko/torch-opencv-demos/issues/11 can you post the output of `locate opencv-caffe.proto` from your system? Best,