미디어 스트리밍의 원리가 되겠네요... ^^; 
요즘 대부분 브라우저가 html5 가 지원되니까요.... 
그리고 각종 미디어 플레이어들이 스트리밍을 잘 지원하니까..
아래를 참고하면 간단하게 스트리밍 서버를 만들 수 있습니다.


In my last two posts I've shown how to generate a mp4 video file. 
In this post I show some go code to serve the generated file via http. 
It basically boils down to a call of ServeContent in the http package.

package main

import (
	"flag"
	"log"
	"net/http"
	"os"
	"path"
	"time"
)

func main() {
    fileName := flag.String("f","","filename to stream")
    flag.Parse()
    if fileName==nil || *fileName=="" {
        log.Println("File needed")
        return
    }
    baseName := path.Base(*fileName)
    file,err := os.Open(*fileName)
    if err!=nil {
        log.Println("Couldn't open file",fileName)
        return
    }
    http.HandleFunc("/stream",func(w http.ResponseWriter, r *http.Request) {
        http.ServeContent(w,r,baseName,time.Unix(0,0),file)
    })
    log.Fatal(http.ListenAndServe(":8010",nil))
}

To start the program type ./prog -f cool_movie.mp4 and then enter 
http://192.168.0.1:8010/stream in a browser on your smartphone 
(assuming you PC has the IP 192.168.0.1). I've tested it with Firefox and Chrome. 
Both could play the file but Firefox has no full screen mode and thus leaves 
the navigation bars active. A resized and shrinked video isn't what you want when playing 
around with cardboard VR.
출처 : https://jluger.de/blog/20160118_serve_a_video_with_golang.html