问题
Using MVC3 and flowplayer, I have a video player that is set up to get video files with the following markup:
<div id="video">
<div id="video-viewport">
<!-- The data-ratio is a decimal number represeting the height of the video in proportion to the width -->
<div class="flowplayer" data-swf="http://releases.flowplayer.org/5.1.1/flowplayer.swf"
data-ratio="0.417" data-engine="html5" data-keyboard="true" data-native_ipad_fullscreen="true"
data-volume="0.6">
<video>
<!-- By default Flowplayer attempts to use HTML5 video and if it's not
supported then Flash (9.0+) and MP4 is used. MP4 is enough for
complete browser support but providing WebM and/or OGG gives you
broader support for HTML5 video which is the preferred technology. -->
<!-- MP4 gives a complete cross browser support with the aid of Flash -->
<source type="video/mp4" src="@Url.Action("GetVideo", "Video", new { id = Model.WebMp4Video.Id })"/>
<!-- WEBM gives HTML5 video support for the latest Firefox, Chrome and Opera browser -->
<source type="video/webm" src="@Url.Action("GetVideo", "Video", new { id = Model.WebMVideo.Id })"/>
<!-- OGG gives HTML5 support for older versions of Firefox and Opera -->
<source type="video/ogv" src="@Url.Action("GetVideo", "Video", new { id = Model.OgvVideo.Id })"/>
</video>
</div>
</div>
</div> <!--/video-->
In the controller I have this method returning the videos:
public ActionResult GetVideo(string id) {
...
var cd = new System.Net.Mime.ContentDisposition {
Inline = false
};
FileInfo info = new FileInfo(path);
Response.AppendHeader("Content-Disposition", cd.ToString());
return new RangeFilePathResult(MimeType, info.FullName, info.LastWriteTimeUtc, info.Length);
}
RangeFilePathResult has been a life saver in returning partial responses and this all works fine in Firefox and IE, but in Chrome I am getting a frequent error:
"server cannot set status after http headers have been sent".
and the player itself crashes, revealing the following error on the page:
html5: Video not properly encoded
I am still trying to get my head around partial responses, but could this be because the RangeFileResult sets a status code 206 with each partial response? Or is there anything else I am missing here?
Edit: If I debug through the RangeFileResult code and also inspect the Network tab in Chrome, I notice that the request to the controller method returns the partial response, with status pending, as soon as the code hits this line:
context.HttpContext.Response.Flush();
there seems to be a delay on this, sometimes more than 10 seconds, but when this is complete the status of the repsonse changes to 206. Often while the video is playing, though, the status is again changed to cancelled and this is when the
html5: Video not properly encoded
message appears on the video player.
Edit2: The repsonses I am getting are as follows (3 responses, first and third are cancelled, second has 206 status:
Request
URL: http://localhost:64729/Video/GetVideo/24
Method: GET
Status Code: 206 Partial Content
Request Headers
Accept:*/*
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:identity;q=1, *;q=0
Accept-Language:en-US,en;q=0.8
Cache-Control:max-age=0
Connection:keep-alive
Cookie:.ASPXAUTH=BD5B9748E6985F5659B56289A5543C11CACBF1602AFFD5D4335453560988B870F2543269809401D13EE9F12EFBAC2D4CE0322B5F826871B9968B3D2986C01E35C536B28B5EC24E8E4F631D094B0DBEFF76DA84DA7CCC753E06C38C0FA36A858AC87548099BD23D4BE9B80434970A542489EC5E5F4543A9C98CA573F196DCBFE1B8CC18C10AE1AFEB0E4E899C6CA4DEFC59138E170954016DCB9C007FDC7C2B2950436E24AA5FF9C0888822626C9AE01C07A98F317A9499F0E9D5E61434F959E9;ASP.NET_SessionId=o112vzki5owvbptr4kudbdax
Host:localhost:64729
Range:bytes=0-
Referer:http://localhost:64729/Video/Index/3
User-Agent:Mozilla/5.0 (Windows NT 6.2) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.52 Safari/537.17
Response headers
Cache-Control:private, s-maxage=0
Connection:Close
Content-Length:7362920
Content-Range:bytes 0-7362919/7362920
Content-Type:video/mp4
Date:Tue, 15 Jan 2013 12:55:24 GMT
Server:ASP.NET Development Server/10.0.0.0
X-AspNet-Version:4.0.30319
X-AspNetMvc-Version:3.0
Request
URL: http://localhost:64729/Video/GetVideo/24
Method: GET
Status Code: 206 Partial Content
Request headers
Accept:*/*
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:identity;q=1, *;q=0
Accept-Language:en-US,en;q=0.8
Connection:keep-alive
Cookie:.ASPXAUTH=BD5B9748E6985F5659B56289A5543C11CACBF1602AFFD5D4335453560988B870F2543269809401D13EE9F12EFBAC2D4CE0322B5F826871B9968B3D2986C01E35C536B28B5EC24E8E4F631D094B0DBEFF76DA84DA7CCC753E06C38C0FA36A858AC87548099BD23D4BE9B80434970A542489EC5E5F4543A9C98CA573F196DCBFE1B8CC18C10AE1AFEB0E4E899C6CA4DEFC59138E170954016DCB9C007FDC7C2B2950436E24AA5FF9C0888822626C9AE01C07A98F317A9499F0E9D5E61434F959E9;ASP.NET_SessionId=o112vzki5owvbptr4kudbdax
Host:localhost:64729
Range:bytes=7339303-
Referer:http://localhost:64729/Video/Index/3
User-Agent:Mozilla/5.0 (Windows NT 6.2) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.52 Safari/537.17
Response headers
Cache-Control:private, s-maxage=0
Connection:Close
Content-Length:23617
Content-Range:bytes 7339303-7362919/7362920
Content-Type:video/mp4
Date:Tue, 15 Jan 2013 12:55:24 GMT
Server:ASP.NET Development Server/10.0.0.0
X-AspNet-Version:4.0.30319
X-AspNetMvc-Version:3.0
Request
URL: http://localhost:64729/Video/GetVideo/24
Method: GET
Status Code: 206 Partial Content
Request headers
Accept:*/*
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:identity;q=1, *;q=0
Accept-Language:en-US,en;q=0.8
Connection:keep-alive
Cookie:.ASPXAUTH=BD5B9748E6985F5659B56289A5543C11CACBF1602AFFD5D4335453560988B870F2543269809401D13EE9F12EFBAC2D4CE0322B5F826871B9968B3D2986C01E35C536B28B5EC24E8E4F631D094B0DBEFF76DA84DA7CCC753E06C38C0FA36A858AC87548099BD23D4BE9B80434970A542489EC5E5F4543A9C98CA573F196DCBFE1B8CC18C10AE1AFEB0E4E899C6CA4DEFC59138E170954016DCB9C007FDC7C2B2950436E24AA5FF9C0888822626C9AE01C07A98F317A9499F0E9D5E61434F959E9;ASP.NET_SessionId=o112vzki5owvbptr4kudbdax
Host:localhost:64729
Range:bytes=48-
Referer:http://localhost:64729/Video/Index/3
User-Agent:Mozilla/5.0 (Windows NT 6.2) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.52 Safari/537.17
Response headers
Cache-Control:private, s-maxage=0
Connection:Close
Content-Length:7362872
Content-Range:bytes 48-7362919/7362920
Content-Type:video/mp4
Date:Tue, 15 Jan 2013 12:55:24 GMT
Server:ASP.NET Development Server/10.0.0.0
X-AspNet-Version:4.0.30319
X-AspNetMvc-Version:3.0
回答1:
After some intensive testing (thank you for sample project) it looks like Chrome is having some issues with mp4 format.
In order to fix this situation it should be enough to move webm as the first format so Chrome will pick it up instead of mp4 (IE will skip to mp4 so it will work too):
<div id="video">
<div id="video-viewport">
<div class="flowplayer" data-swf="http://releases.flowplayer.org/5.1.1/flowplayer.swf" data-ratio="0.417" data-engine="html5" data-keyboard="true" data-native_ipad_fullscreen="true" data-volume="0.6">
<video>
<source type="video/webm" src="@Url.Action("GetVideo", "Video", new { id = Model.WebMVideo.Id })"/>
<source type="video/ogv" src="@Url.Action("GetVideo", "Video", new { id = Model.OgvVideo.Id })"/>
<source type="video/mp4" src="@Url.Action("GetVideo", "Video", new { id = Model.WebMp4Video.Id })"/>
</video>
</div>
</div>
</div>
回答2:
You can try this , it fixed my problem whick seems the same with yours .
<script>
flowplayer.conf={
engine:'flash'
};
</script>
来源：https://stackoverflow.com/questions/14336690/error-with-html5-video-in-chrome-using-rangefilepathresult