upload the video file in videoplay

I need a code to add a videofiles to videoplay :-

This is sample code : videoplay.aspx

<div>
        <asp:FileUpload ID="f1" runat="server" />
        <asp:LinkButton ID="lnk" runat="server" Text="UpdateVideoFile" OnClick="lnk_Click" />
        <asp:Label ID="Label1" runat="server" Text="" /><br /><br />
       
        <div style="background-color: rgb(255, 255, 255); width: 350px;" class="media {width:350, height:300}">
            <embed style="display: block;" src="GIVE FILE PATH HERE" type="application/x-mp ...