[MPlayer-dev-eng] [PATCH] using mplayer with ffmpeg asf stream
Dominique Andre Gunia
Dominique.Gunia at schunter.etc.tu-bs.de
Thu Oct 30 01:35:50 CET 2003
Hi!
I found something: On
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/webserver.asp
MS defines that one has to tell the webserver to associate
video/x-ms-asf with asf files as well as asx files. Therefore
application/octet-stream seems to be obsolete.
Since there is no difference in the Content-Type between a playlist and
a video, one should either decide from the URL or the content of the
stream if this is a URL or an ASF stream.
What do you suggest?
Regards,
Dominique
On Thu, 2003-10-30 at 00:54, Dominique Andre Gunia wrote:
> On Wed, 2003-10-29 at 22:42, Bertrand Baudet wrote:
>
> Hi!
>
> This stream can be played with MS WMP (WinXP) without any problems.
> Thats the reason why I though mplayer should be able to play this, too
> :)
>
> I looked at the source code of asfrecorder.sf.net now. It also does not
> work with this asf stream until I changed the code to recognize
> video/x-ms-asf as video stream, not as redirector.
>
> That lets me believe, ffmpeg is wrong in sending it as Content-Type for
> the asf stream, but then I do not understand how MS WMP can play this
> stream.
>
> I now have also found that ffmpeg changed the Content-Type from
> application/octet-stream to video/x-ms-asf in Dezember 2002:
>
> > (File libavformat/asf.c)
> > Revision 1.36 / (download) - annotate - [select for diffs] , Fri Dec
> > 20 23:10:58 2002 UTC (10 months, 1 week ago) by michaelni
> > Branch: MAIN
> > CVS Tags: release_0_4_6
> > Changes since 1.35: +2 -2 lines
> > Diff to previous 1.35
> >
> > mimetype fixes patch by (Ryutaroh Matsumoto <ryutaroh at it dot ss dot
> > titech dot ac dot jp>)
>
> So probably there was a reason to change this. I will try to ask them
> why they changed it.
>
> So probably something has to be changed in mplayer to behave like the MS
> WMP?
>
> Regards,
> Dominique
>
> > Hi,
> >
> > I'm not sure it's ok!
> >
> > Did you try to connect to a server that redirect you by sending the same mime
> > type? I'm not sure it's going to work with your patch.
> >
> > In addition, I haven't seen a MS WMS that is sending this mime type for a live
> > stream.
> > Did you try to connect a MS WMP to this stream? did it work?
> >
> > Please verify that all cases are handled properly.
> >
> > Bertrand
> >
> > On Wednesday 29 October 2003 12:53, Dominique Andre Gunia wrote:
> > > Hi!
> > >
> > > I set up a stream with ffmpeg/ffserver (ffmpeg.sourceforge.net). It
> > > creates an asf stream that I would like to view with mplayer. The
> > > problem is, that mplayer thinks the asf file would be a playlist because
> > > of an unknown Content-Type. Details follow:
> > >
> > > When started, I get the following result
> > >
> > > > dom at tng:/tmp$ mplayer -nocache http://schuntille:8090/test.asf
> > > > [...]
> > > > Playing http://schuntille:8090/test.asf
> > > > Resolving schuntille ...
> > > > Connecting to server schuntille[134.169.169.6]:8090 ...
> > > > Resolving schuntille ...
> > > > Connecting to server schuntille[134.169.169.6]:8090 ...
> > > > =====> ASF Redirector
> > > > Connected to server: schuntille
> > > >
> > > >
> > > > MPlayer interrupted by signal 2 in module: handle_playlist
> > >
> > > The http-protocol is something like this:
> > > > dom at tng:/tmp/MPlayer-0.92$ telnet schuntille 8090
> > > > Trying 134.169.169.6...
> > > > Connected to schuntille.schunter.etc.tu-bs.de.
> > > > Escape character is '^]'.
> > > > GET /test.asf HTTP/1.0
> > > > Host: schuntille
> > > >
> > > > HTTP/1.0 200 OK
> > > > Pragma: no-cache
> > > > Server: Cougar 4.1.0.3923
> > > > Cache-Control: no-cache
> > > > Pragma: client-id=1908046342
> > > > Pragma: features="broadcast"
> > > > Content-Type: video/x-ms-asf
> > >
> > > As you can see the Content-Type is video/x-ms-asf but mplayer expects
> > >
> > > one of these (defined in libmpdemux/asf_stream.c):
> > > > if(!strcasecmp(content_type, "application/octet-stream") ||
> > > > !strcasecmp(content_type, "application/vnd.ms.wms-hdr.asfv1") ||
> > > > !strcasecmp(content_type, "application/x-mms-framed") )
> > >
> > > Since this content type is not defined, it uses the default behaviour,
> > > which thinks this is a redirector for some browser and tries to parse it
> > > as playlist, which is simply wrong.
> > >
> > > When I patch the file like this:
> > >
> > > --- main/libmpdemux/asf_streaming.c 2003-09-25 02:36:04.000000000 +0200
> > > +++ main.patched/libmpdemux/asf_streaming.c 2003-10-29
> > > 12:44:32.000000000 +0100 @@ -421,7 +421,8 @@
> > > if( content_type==NULL ) return ASF_Unknown_e;
> > > if( !strcasecmp(content_type, "application/octet-stream") ||
> > > !strcasecmp(content_type,
> > > "application/vnd.ms.wms-hdr.asfv1") || // New in Corona, first
> > > request - !strcasecmp(content_type,
> > > "application/x-mms-framed") ) { // New in Corana, second
> > > request + !strcasecmp(content_type,
> > > "application/x-mms-framed") || // New in Corana, second
> > > request + !strcasecmp(content_type, "video/x-ms-asf")) {
> > >
> > > if( strstr(features, "broadcast") ) {
> > > mp_msg(MSGT_NETWORK,MSGL_V,"=====> ASF Live
> > > stream\n");
> > >
> > >
> > > everything is fine. The output is
> > >
> > > > Playing http://schuntille:8090/test.asf
> > > > Resolving schuntille ...
> > > > Connecting to server schuntille[134.169.169.6]:8090 ...
> > > > Resolving schuntille ...
> > > > Connecting to server schuntille[134.169.169.6]:8090 ...
> > > > Resolving schuntille ...
> > > > Connecting to server schuntille[134.169.169.6]:8090 ...
> > > > Cache size set to 0 KBytes
> > > > Connected to server: schuntille
> > > > Stream not seekable!
> > > > ASF file format detected.
> > >
> > > Is this a bug in ffmpeg or in mplayer? If it is a bug in mplayer, could
> > > you please use this patch for further versions? I found serveral users
> > > having this problem and no one knew a solution.
> > >
> > > Thanks very much!
> > >
> > > Regards,
> > > Dominique
> >
> > _______________________________________________
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> > MPlayer-dev-eng at mplayerhq.hu
> > http://mplayerhq.hu/mailman/listinfo/mplayer-dev-eng
>
>
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