Node.js Docker Image that can uses FFmpeg

.gitignore

/out.mp4

Dockerfile

FROM jrottenberg/ffmpeg:4.1-alpine AS ffmpeg
FROM node:lts-alpine
# ENV LD_LIBRARY_PATH=/usr/local/lib
COPY --from=ffmpeg / /
WORKDIR /usr/src/app
COPY main.js ./
CMD [ "node", "main.js" ]

in.mp4

main.js

const {spawn} = require('child_process')

if (require.main === module) {
  main()
}

async function main () {
  try {
    const code = await new Promise((resolve, reject) => {
      const command = 'ffmpeg'
      const args = ['-version']
      const ffmpeg = spawn(command, args) // <1>

      ffmpeg.stdout.pipe(process.stdout) // <2>
      ffmpeg.stderr.pipe(process.stderr)

      ffmpeg.on('exit', code => { // <3>
        resolve(code)
      })

      ffmpeg.on('error', err => { // <4>
        reject(err)
      })
    })

    console.info(`ffmpeg exit: code = ${code}`) // <5>
  } catch (err) {
    console.error(err)
  }
}

makefile

build:
	docker image build -t ffmpeg-nodejs-docker .

run:
	docker container run --rm ffmpeg-nodejs-docker

sh:
	docker container run --rm -it -v `pwd`:/usr/src/app ffmpeg-nodejs-docker /bin/sh

encode:
	ffmpeg -i in.mp4 -max_muxing_queue_size 1024 out.mp4