How do I stream a video file using ASP.NET MVC?

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I am developing a web site where people can access audio and video files. I have the code for downloading the files, which consists of two action methods as follows...

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無奈伤痛

2021-02-13 22:47
The possible way to play a video from Database / PC
```
<div height="240" width="320" controls>
      <video>
             <source src="@Url.Content(Model.VideoTable.VideoPath)" type='video/mp4' />
      </video>
</div>
```
source property needs to get url not the string,

so @Url.Content converts the video-path as Url
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醉梦人生

2021-02-13 22:47

Controller

Imports System.Web.Mvc

Namespace Controllers
    Public Class HomeController
        Inherits Controller

        Function Index() As ActionResult
            Return View()
        End Function

        Sub movie(id As Integer) 'As ActionResult

            Dim fm As String = "D:\Downloads\Rhoma Irama  Riza Umami - Suratan (Official Music Video).mp4"

            If id = 2 Then fm = "D:\Downloads\JERA riza umami   lagu dangdut   YouTube.mp4"
            If id = 3 Then fm = "D:\Downloads\FTV Trans TV CINTANYA ANAK HITS KEKINIAN RIDWAN GHANI.mp4"

            Dim fi As New IO.FileInfo(fm)
            Dim fs As IO.FileStream = IO.File.OpenRead(fm)
            Dim buff_size As Integer = 1048576 '1Mb buffering
            Dim buff(buff_size) As Byte, max_l As Integer = fs.Length - 1

            If Not Request.ServerVariables("HTTP_RANGE") Is Nothing Then

                Dim r() As String = Request.ServerVariables("HTTP_RANGE").Split("=")
                Dim s() As String = r(1).Split("-")
                Dim bs As Integer = 0, be As Integer = 0, l As Integer = 0

                If IsNumeric(s(0)) Then bs = s(0)
                If IsNumeric(s(1)) Then be = s(1)

                If bs >= 0 And bs <= max_l Then

                    Response.StatusCode = 206
                    Response.ContentType = "video/" & fi.Extension
                    Response.AddHeader("Accept-Ranges", "0-" & max_l)
                    Response.AddHeader("Content-Range", "bytes " & bs & "-" & bs + buff_size & "/" & max_l)
                    Response.AddHeader("Content-Length", buff_size)

                    fs.Position = bs
                    l = fs.Read(buff, 0, buff.Length)
                    If l > 0 Then Response.OutputStream.Write(buff, 0, buff.Length)

                End If

            End If

        End Sub
    End Class
End Namespace

VIEWS (I use Razor)

<body>
    <button onclick="video1.src='@Url.Action("movie", "home", New With {.id = 1})'">1</button>
    <button onclick="video1.src='@Url.Action("movie", "home", New With {.id = 2})'">2</button>
    <button onclick="video1.src='@Url.Action("movie", "home", New With {.id = 3})'">3</button>
    <video controls autoplay="autoplay" id="video1" width="920">
        <source src="@Url.Action("movie", "home", New With {.id = 1})" type="video/mp4">
        Your browser does not support HTML5 video.
    </video>  
</body>

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爱一瞬间的悲伤

2021-02-13 22:57

The File method of MvcController returns a FileContentResult. The latter does not stream the content. As far as I'm aware, MvcController does not support streaming at all.

You may want to try ApiController and PushStreamContent. The latter gives the possibility to asynchronously write to the output stream via a callback method. You'll need to work with actual streams in your solution for that. Working with byte[] will always load the whole file content into memory.

See a detailed tutorial here:Asynchronously streaming video with ASP.NET Web API

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