Mp4下载导致浏览器播放文件而不是下载 [英] Mp4 Download causes browser to play file instead of download

问题描述

在我的网站我流式传输用户的mp4内容。我也允许用户下载。
但是在Chrome中，似乎是自动在内部播放器播放文件，而不是下载文件。

In my website I stream users mp4 content. I also allow users to download. However in Chrome it seems to automatically play the file in an internal player instead of downloading the file.

如何强制浏览器下载文件

How do I force the browser to download the file instead.

感谢并感谢
Craig

Regards and thanks Craig

推荐答案

你必须使用HTTP标头 Content-Disposition 和 Content-Type：application / force-download ，这将强制浏览器下载内容，而不是在那里显示。

You have to use the HTTP header "Content-Disposition" and 'Content-Type: application/force-download' which will force browser to download the content instead of displaying it there.

根据您实现的服务器端语言不同，如果

Depending upon the server side language you are having the implementation differs. In case of

PHP：

    header('Content-Disposition: attachment; filename="'.$nameOfFile.'"');

将为您做这项工作。

为了简化和推广所有文件，您可能需要编写一种将链接路由到可下载内容的方法。

Ofcourse to simplify and generalize this for all your files, you may need to write a method which will route a link to downloadable content.

您可以在html中显示的链接将如下所示：

The link you can show in the html will be like:

<a href="http://yoursite.com/downloadFile?id=1234">Click here to Download Hello.mp4</a>

在服务器端，您需要一个正在/ downloadFile上的脚本（取决于您的路由），通过id获取文件，并将其作为附件发送给用户。

And in the server side, you need a script which is being called on /downloadFile (depending on your routing), get the file by id and send it to user as an attachment.

<?php

 $fileId = $_POST['id'];

 // so for url http://yoursite.com/downloadFile?id=1234 will download file
 // /pathToVideoFolder/1234.mp4
 $filePath = "/pathToVideoFolder/".$fileId."mp4";
 $fileName = $fileId."mp4"; //or a name from database like getFilenameForID($id)
 //Assume that $filename and $filePath are correclty set.
header('Content-Description: File Transfer');
header('Content-Disposition: attachment; filename="'.$filename.'"');
header('Content-Type: application/force-download');
readfile($filePath);

这里Content-Type：application / force-download将强制浏览器显示下载选项无论mime类型的默认设置是什么。

Here 'Content-Type: application/force-download' will force the browser to show the download option no matter what's the default setting is for a mime-type.

无论您的服务器端技术如何，需要注意的是：

No matter what your server side technology is, the headers to look out for are:

'Content-Description: File Transfer'
'Content-Type: application/force-download'
'Content-Disposition: attachment; filename="myfile.mp4"

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