Use ff-twmedia instead.
My practice of Golang
$ make
$ bin/twmedia [URL]
# or
$ go run main.go [URL]
# or
$ docker run --rm -v $PWD:/mnt mmktomato/go-twmedia:latest [URL]
Same as curl's one.
$ go run main.go [URL] -H "Referer: http://localhost"
Shows verbose log.
$ go run main.go [URL] -v
- ffmpeg
- go 1.12 or higher
- gomock https://github.com/golang/mock