来自数据库的视频流

Question

我正在尝试从数据库(ASP.NET MVC4)显示媒体:

var memoryStream = new MemoryStream(mediaContent.File.FileData.Data);

return new FileStreamResult(memoryStream, MimeMapping.GetMimeMapping(mediaContent.File.Filename));

图片显示正常,但当我要mysite/media/4在Chrome或Firefox中显示链接时,我遇到视频问题(.avi):

<embed width="100%" height="100%" name="plugin" src="http://mysite/media/4" type="video/x-msvideo">

但是视频没有播放(如果链接指向真实的视频文件就会发生),但是如果我在IE中打开此链接它会提示我下载文件,当我从播放器打开此文件时它工作正常.

响应标头:

Cache-Control:private, s-maxage=0
Content-Length:808680
Content-Type:video/x-msvideo
Date:Wed, 06 Nov 2013 10:03:09 GMT
Server:Microsoft-IIS/7.5
X-AspNet-Version:4.0.30319
X-AspNetMvc-Version:4.0
X-MiniProfiler-Ids:["e305dcdb-79be-4452-94d2-a9999ffaa13a","c0c81d12-8b31-425c-a57b-2ad186c958d5","1f7f3c09-a695-49f1-9203-6b5bf44b837a","fb0d637e-5926-4759-ad6f-f7322403e98c","f08c0392-10d6-4477-b2df-be52ab9a1d64","366d6122-15a5-41b4-840a-607fc6931996","11fd2eb7-efce-47a1-96f8-09fbdb0b1fa0","690e67b7-b1fb-46a3-9aa3-ef6207203f55","a51640ad-f31d-4f12-a807-6ea06ba0ee46","38adc052-9c41-4243-97d2-41dbf3b36093","9d255225-c122-44ef-8021-5b6f9d4dd549","2b249ff3-9e37-43c3-b6ab-b78b26c6d6ce","2bec0b1b-4898-4b14-bf12-cc331e27ecfc","49c72e01-c8d4-495f-af7e-8ffd687e94e9","1c87e454-f90d-49f4-9618-8dfe0d9c0329","2152a9a8-54ae-47d8-b98a-83ac32dbdb0c","9cf93254-9552-4834-826e-df7e8a7d8e73","a2d782e2-96ca-4e9c-b612-9782a37a06ca","e10ecc8a-5811-4cca-b566-3f09e1de3f2c","3769bb15-60f9-43c3-ad6c-285f3fb47112","1996c4aa-9f76-4f33-95fa-3f7f5b3e72f4"]
X-Powered-By:ASP.NET

我做错了什么？我希望有一个链接,我可以用它<object>来在页面上显示这个视频.

更新1: 如果我为物理视频文件键入url,我得到的响应不会产生任何意义:

HTTP/1.1 304 Not Modified
Last-Modified: Tue, 05 Nov 2013 17:07:56 GMT
Accept-Ranges: bytes
ETag: "5d50369249dace1:0"
Server: Microsoft-IIS/7.5
X-Powered-By: ASP.NET
Date: Wed, 06 Nov 2013 11:20:32 GMT

但它的工作原理是使用引入的VLC播放器插件开始在浏览器中播放视频.

更新2: 我尝试了多种不同的实现,返回视频,并试图把链接src的object

<object id="video-player" class="preview-container" type="video/x-msvideo" src="{link to video}" loop="true" controls="false" autoplay="true"></object>

因此,如果链接到真实视频,如"localhost/media/some_video.avi",那么它在内部工作正常object,如果直接到url.

我检查了不同实现的行为

1) return File(memoryStream, MimeMapping.GetMimeMapping(mediaContent.File.Filename), mediaContent.File.Filename);

to url:提示下载视频文件; 在object中:显示空插件;

2) return new FileContentResult(mediaContent.File.FileData.Data, "application/x-vlc-plugin")

to url:显示空插件; 在object中:显示空插件;

3) return new FileContentResult(mediaContent.File.FileData.Data, "video/avi")

to url:提示下载视频文件; 在object中:显示空插件;

更新3: 我做了一个HttpHandler:

public void ProcessRequest(HttpContext context)
{
    MediaContent mediaContent;
    //getting mediaContent

    context.Response.Clear();
    context.Response.Buffer = true;
    context.Response.AppendHeader("Content-Disposition", "inline; filename=" + mediaContent.File.Filename);
    context.Response.ContentType = MimeMapping.GetMimeMapping(mediaContent.File.Filename);
    context.Response.BinaryWrite(mediaContent.File.FileData.Data);
    context.Response.End();
}

它只是工作.好.然后我用与Handler相同的逻辑做了一些动作:

[HttpGet]
public void Media(int id)
{
    MediaContent mediaContent;
    //getting mediaContent

    Response.Clear();
    Response.Buffer = true;
    Response.AppendHeader("Content-Disposition", "inline; filename=" + mediaContent.File.Filename);
    Response.ContentType = MimeMapping.GetMimeMapping(mediaContent.File.Filename);
    Response.BinaryWrite(mediaContent.File.FileData.Data);
    Response.End();
}

但是这个动作仍然无法使用视频,我开始比较响应头.

处理器:

HTTP/1.1 200 OK
Cache-Control: private
Content-Type: video/x-msvideo
Server: Microsoft-IIS/7.5
Content-Disposition: inline; filename=Reebok_App_attract640L.avi
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Wed, 06 Nov 2013 17:02:45 GMT
Content-Length: 808680

行动:

HTTP/1.1 200 OK
Cache-Control: private, s-maxage=0
Content-Type: video/x-msvideo
Transfer-Encoding: chunked
Server: Microsoft-IIS/7.5
X-AspNetMvc-Version: 4.0
Content-Disposition: inline; filename=Reebok_App_attract640L.avi
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Wed, 06 Nov 2013 17:02:47 GMT

要摆脱Transfer-Encoding,我已将Content-Length添加到我的操作中:

Response.AddHeader("Content-Length", mediaContent.File.FileData.Data.Length.ToString());

我无法摆脱的s-maxage=0,但现在标头相似(除s-maxage=0,X-AspNetMvc-Version: 4.0和头顺序)

Answer 1

好吧，我尽力镜像您的初始代码，减去数据库，下面的内容对我来说效果很好。VS2012、MVC4、IIS Express 本地、IIS7.5 远程，适用于 IE10 本地、IE10 远程、IE9 远程。我使用的 AVI 文件是我在 windows\winsxs 文件夹中找到的一些随机文件。我建议您遇到客户端问题（特别是 IE）。也许像 cookie 处理问题（http://mvolo.com/iis-70-forms-authentication-and-embedded-media-players/）、IE安全区域设置或其他问题？

顺便说一句，嵌入时的 height=100% 对我来说不起作用，需要是像素。

控制器

namespace MvcApplication4.Controllers
{
    public class HomeController : Controller
    {

        public ActionResult Index()
        {
            return new ViewResult();
        }

        public ActionResult Media(int id)
        {
            string fn = Server.MapPath("~/App_Data/boxed-delete.avi");
            var memoryStream = new MemoryStream(System.IO.File.ReadAllBytes(fn));
            return new FileStreamResult(memoryStream, MimeMapping.GetMimeMapping(System.IO.Path.GetFileName(fn)));
        }

    }
}

看法

@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
    <div>
        <!-- http://localhost:54941/Home/Media/3  -->
    <embed width="100%" height="500"  name="plugin" src="~/Home/Media/3" type="video/x-msvideo">     
    </div>
</body>
</html>