# @ffmpeg/core To build @ffmpeg/core, make sure your docker is version 23.0+ as [buildx](https://docs.docker.com/build/architecture/) is adopted. Also You will need to install `make` to run build scripts. ## Build Dev Build (single thread): ```bash $ make dev ``` Dev Build (multithread): ```bash $ make dev-mt ``` Prodution Build (single thread): ```bash $ make prd ``` Prodution Build (multithread): ```bash $ make prd-mt ``` > Each build might take around 1 hour depends on the spec of your machine, > subsequent builds are faster as most layers are cached. The output file locates at **/packages/core** or **/packages/core-mt**. ## Publish Simply run `npm publish` under **packages/core** or **/packages/core-mt**.