- put any video file (mov, avi, mp4 ) inside unity 3d project window.
 - Right Click the movie file and choose export ogg file
 - Save the file in Desktop or some known location
 - setup your web server both remote and local web server will work fine. I'll go for local web server I'll get and install xampp from apache friends
 - Copy paste the exported files i.e. the ogv files in the xampp htdocs folder such that it will be accessed from browser as http://localhost/filename.ogv
 
Now use the following code as cs file to play videos
using UnityEngine;
using System.Collections;
public class streaming : MonoBehaviour {
 private MovieTexture  m;
 private string playButtonString="play",url= "http://localhost/";
 private string [] mediaSource = {"1.ogv","2.ogv","3.ogv","4.ogv","5.ogv"};
 public AudioSource AS;
 bool isMenu = true;
 int tmp;
 private WWW www;
 // Use this for initialization
 void Start () {
 }
 // Update is called once per frame
 void Update () {
  if(Input.GetKeyUp(KeyCode.Escape))
   {
   //~ Screen.showCursor = true;
   Screen.fullScreen = false;
   isMenu = true;
   }
  if(Screen.fullScreen == true) {
   if(Input.mousePosition.x >=20 && Input.mousePosition.x<=(Screen.width -40) && Input.mousePosition.y>=0 && Input.mousePosition.y <= 80)
    isMenu = true;
   else
    isMenu = false;
  }
  else
   isMenu = true;
 }
 void OnGUI() {
  if(m!=null)
  GUI.DrawTexture (new Rect (0,0,Screen.width,Screen.height),m,ScaleMode.StretchToFill);
  else
   GUI.Label(new Rect(50,100,200,50), "Video is yet to Start");
  if(isMenu) {
   GUI.Box(new Rect(20, Screen.height - 60, Screen.width-40,60),"");
  for ( int i=0;i < mediasource.length;i++) {
    if(m!=null)
    if (i == tmp && m.isPlaying) 
     playButtonString="pause"; //it's playing so the button should pause.
    else
     playButtonString="play"; //it's not playing and the button should play the movie.
    if (GUI.Button (new Rect (30 + (200 * i),Screen.height-40,100,30),playButtonString + i) == true)
    {
     if(m!=null)
     if (m.isPlaying == true) {
      m.Pause();
      AS.Pause();
      if (i == tmp)
      return;
     }
     else if(m.isReadyToPlay && i == tmp)
     {
      m.Play();
      AS.Play();
      return;
     }
      www = new WWW(url+mediaSource[i]);
      m = www.movie;
      AS.clip = m.audioClip;
       while(!m.isReadyToPlay) {
        SomeCoroutine();
         if (!m.isPlaying) {
         m.Play();
         if(!AS.isPlaying)
         AS.Play();
        }
       }
      Screen.fullScreen = true;
      isMenu = false;
      tmp = i;
    }
    if (GUI.Button (new Rect(130 + (200 *i),Screen.height-40,100,30),"Stop"+ i)==true && i==tmp) {
     m.Stop();
     AS.Stop();
    }
   }
  }
  else {
   GUI.Label( new Rect(Screen.width - 200, 10,200,20), "Press Esc for Menu or");
   if(GUI.Button( new Rect(Screen.width - 200, 30,100,20), "Click Here")) {
    isMenu = true;
    Screen.fullScreen = false;
   }
  }
 }
  IEnumerator SomeCoroutine () {
        // Wait for one frame
        yield return www;
      }
}