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Hey there,
I'm using the Windows Media Encoder SDK to run an web application that
streams a user's desktop. When I run the application in debug mode, it
works perfectly; when I run it outside of debug mode (http://localhost
instead of http://localhost:1234/folder/file.aspx) it streams a blank
page.
Has anyone experienced this issue, or have any ideas on how to remedy
it?
Thanks in advance,
Robby
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On Tue, 19 Jun 2007 12:35:54 -0700, robbyking[ at ]gmail.com wrote:
[Quoted Text] >Hey there, > >I'm using the Windows Media Encoder SDK to run an web application that >streams a user's desktop. When I run the application in debug mode, it >works perfectly; when I run it outside of debug mode ( http://localhost>instead of http://localhost:1234/folder/file.aspx) it streams a blank >page. >
I don't know what you mean by "debug mode" in that context.
The only difference between your posted examples is the port number
used to access the web server - which has no relation to the media
encoder activeX control (even if you're using one).
Since you haven't posted your page code, it's impossible to answer.
Cheers - Neil
------------------------------------------------
Digital Media MVP : 2004-2007
http://mvp.support.microsoft.com/mvpfaqs
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[Quoted Text] > I don't know what you mean by "debug mode" in that context.
To clarify...
I'm using Visual Studio.NET to develop, and when I launch the app in
debug mode in VS, it works fine...when I run it though IIS, I get a
blank (black) stream.
Thanks...
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And the code, if that helps:
WMEncoderApp EncoderApp = new WMEncoderApp();
IWMEncoder Encoder = EncoderApp.Encoder;
Encoder.AutoIndex = true;
IWMEncSourceGroupCollection SrcGrpColl =
Encoder.SourceGroupCollection;
IWMEncSourceGroup SrcGrp = SrcGrpColl.Add("SG_1");
IWMEncVideoSource2 SrcVid =
(IWMEncVideoSource2)SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_VIDEO);
IWMEncSource SrcAud =
SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO);
SrcAud.SetInput("Default_Audio_Device", "Device", "");
SrcVid.SetInput("ScreenCapture1", "ScreenCap", "");
IWMEncProfileCollection ProColl =
Encoder.ProfileCollection;
IWMEncProfile Pro;
ProColl = Encoder.ProfileCollection;
int lLength = ProColl.Count;
for (int i = 0; i <= lLength - 1; i++)
{
Pro = ProColl.Item(i);
if (Pro.Name == "Screen Video/Audio High (CBR)")
{
SrcGrp.set_Profile((IWMEncProfile)Pro);
break;
}
}
// Create a broadcast.
IWMEncBroadcast BrdCst = Encoder.Broadcast;
BrdCst.set_PortNumber(WMENC_BROADCAST_PROTOCOL.WMENC_PROTOCOL_HTTP,
Port);
// Start the encoding process.
Encoder.PrepareToEncode(true);
Encoder.Start();
StartEncodingButton.Visible = false;
StopEncodingButton.Visible = true;
noteMessageLabel.Text = "The encoding stream was
successfully started. You can view the stream at <a href='mms://" +
ComputerName + ":" + Port + "'><u>mms://" + ComputerName + ":" + Port
+ "</u></a>";
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On Wed, 20 Jun 2007 06:42:30 -0700, robbyking[ at ]gmail.com wrote:
[Quoted Text] >> I don't know what you mean by "debug mode" in that context.
>
>To clarify...
>
>I'm using Visual Studio.NET to develop, and when I launch the app in
>debug mode in VS, it works fine...when I run it though IIS, I get a
>blank (black) stream.
Sounds like a permissions problem to me. Does the IIS process have
access to the directory containing the profiles ? That would normally
be C:\Program Files\Windows Media Components\Encoder\Profiles
IIS should *not* have access to that part of the filesystem, and
there's probably the root of your problem.
You should probably try instead WMEncProfile2.LoadFromFile or perhaps
LoadFromMemory with an in-memory stream (so you can keep the profile
in a secure area of the web root)
Cheers - Neil
------------------------------------------------
Digital Media MVP : 2004-2007
http://mvp.support.microsoft.com/mvpfaqs
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Thanks Neil...I think this is the problem, though I'm still
experiencing the issue.
I created a profile and added it to a new folder, C:\Inetpub\wwwroot
\EncodingProfiles\;
I then changed the part of my code that gets the profile to...
IWMEncProfile2 Pro = new WMEncProfile2();
SrcVid.SetInput("ScreenCap://ScreenCapture1",
"ScreenCap", "");
Pro.LoadFromFile([ at ]"C:\Inetpub\wwwroot\EncodingProfiles
\casscade.prx");
SrcGrp.set_Profile((IWMEncProfile)Pro);
Now, again, it's working through VS.NET's debug mode, but not directly
through IIS. To try to pinpoint the issue, I temporarily gave IUSR,
IWAM, and ASPNET full control over the folderthe EncodingProfiles
folder, but didn't have any luck.
I still think this is a permissions, error, though; the encoding
bitrate and resolution do not match the profile's.
Have any ideas as to who needs what additional permissions?
And thanks again, Neil, you've been a huge help.
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Oh, hang on - screen capture ? Think about the user context...
Now try to do that with another capture source (any random hardware or
a file source). It could well be that the IIS server process has no
idea how to "interact with the desktop", so I'd like to revise my
possible diagnosis ;-)
Cheers - Neil
On Thu, 21 Jun 2007 08:32:02 -0700, robbyking[ at ]gmail.com wrote:
[Quoted Text] >Thanks Neil...I think this is the problem, though I'm still
>experiencing the issue.
>
>I created a profile and added it to a new folder, C:\Inetpub\wwwroot
>\EncodingProfiles\;
>
>I then changed the part of my code that gets the profile to...
>
> IWMEncProfile2 Pro = new WMEncProfile2();
> SrcVid.SetInput("ScreenCap://ScreenCapture1",
>"ScreenCap", "");
> Pro.LoadFromFile([ at ]"C:\Inetpub\wwwroot\EncodingProfiles
>\casscade.prx");
> SrcGrp.set_Profile((IWMEncProfile)Pro);
>
>Now, again, it's working through VS.NET's debug mode, but not directly
>through IIS. To try to pinpoint the issue, I temporarily gave IUSR,
>IWAM, and ASPNET full control over the folderthe EncodingProfiles
>folder, but didn't have any luck.
>
>I still think this is a permissions, error, though; the encoding
>bitrate and resolution do not match the profile's.
>
>Have any ideas as to who needs what additional permissions?
>
>And thanks again, Neil, you've been a huge help.
>
>
>
>
>
------------------------------------------------
Digital Media MVP : 2004-2007
http://mvp.support.microsoft.com/mvpfaqs
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In case you're interested...
I just moved the profiles into my web root, and now they run fine (t
was a permissions issue). When I have time I'm going to pinpoint
exactly what wasn't able to read the other folder, but I have a
deadline to meet in the meantime. :)
Thanks for pointing me in the right direction!
Robby
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On Tue, 26 Jun 2007 19:24:55 -0000, robbyking[ at ]gmail.com wrote:
[Quoted Text] >In case you're interested...
>
>I just moved the profiles into my web root, and now they run fine (t
>was a permissions issue). When I have time I'm going to pinpoint
>exactly what wasn't able to read the other folder, but I have a
>deadline to meet in the meantime. :)
>
>Thanks for pointing me in the right direction!
Right-o.
The more I think about it though, the more it seems being able to run
screen capture under a web server process is a security hole - rather
like being able to open a mic on the server and broadcast the room
audio from the server room would be ;-)
Cheers - Neil
------------------------------------------------
Digital Media MVP : 2004-2007
http://mvp.support.microsoft.com/mvpfaqs
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On Tue, 26 Jun 2007 21:07:41 GMT, Neil Smith [MVP Digital Media] wrote:
[Quoted Text] > The more I think about it though, the more it seems being able to run
> screen capture under a web server process is a security hole - rather
> like being able to open a mic on the server and broadcast the room
> audio from the server room would be ;-)
<deafening scream of cooling fans> ;-)
--
http://www.chrisnet.net/code.htm
[MS MVP for DirectShow / MediaFoundation]
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Sir,
I am developing an application were i need to stream live images to other
end , but i am getting an delay of 5 -6 secs using windows media encoder .I
need to remove this delay how can this be done i could not found any resource
for it on net .
*****************************************************
Image transfer application has two parts
1. server side application
2. client side application
1. server side application:
Download the media encoder 9 series and media encoder SDK 9 series first and
run those controls and add the path into vc++ directories. Now copy the
profile named “myprofile†attached into the c:\program files \ windows media
components\encoder\profiles and add the “encoderempl†class attached you’re
your application and write following code to crate and play encoder.
CEncoderImpl EncoderImpl; // create object into .h
EncoderImpl.CreateEnc();// call into .cpp
EncoderImpl.StartEncoder();
2. client side application:
On the client side application add a media player 4 active x control
and make an object of control class and set the url first and then called
the play function. Find the client side application attached.
Here m_MediaPlayer is member variable created through class wizard
CString str("http://"); // can use mms protocol
str+="192.168.1.111"; // change the system ip or can give the system name
str+=":8080";
m_MediaPlayer.SetUrl(str);
m_MediaPlayer.GetControls().play();
**************************************************
This is the fragment how i amtrying to do it.
I hope you can help me out.
Regards
Naveen
"Neil Smith [MVP Digital Media]" wrote:
[Quoted Text] > On Tue, 19 Jun 2007 12:35:54 -0700, robbyking[ at ]gmail.com wrote: > > >Hey there, > > > >I'm using the Windows Media Encoder SDK to run an web application that > >streams a user's desktop. When I run the application in debug mode, it > >works perfectly; when I run it outside of debug mode ( http://localhost> >instead of http://localhost:1234/folder/file.aspx) it streams a blank > >page. > > > > > I don't know what you mean by "debug mode" in that context. > > The only difference between your posted examples is the port number > used to access the web server - which has no relation to the media > encoder activeX control (even if you're using one). > > Since you haven't posted your page code, it's impossible to answer. > > Cheers - Neil > ------------------------------------------------ > Digital Media MVP : 2004-2007 > http://mvp.support.microsoft.com/mvpfaqs> |
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On Tue, 26 Jun 2007 23:19:38 -0400, "Chris P." <msdn[ at ]chrisnet.net>
wrote:
[Quoted Text] >On Tue, 26 Jun 2007 21:07:41 GMT, Neil Smith [MVP Digital Media] wrote:
>
>> The more I think about it though, the more it seems being able to run
>> screen capture under a web server process is a security hole - rather
>> like being able to open a mic on the server and broadcast the room
>> audio from the server room would be ;-)
>
><deafening scream of cooling fans> ;-)
OK, it's a fair point - security by obscurity LOL
Cheers - Neil
------------------------------------------------
Digital Media MVP : 2004-2007
http://mvp.support.microsoft.com/mvpfaqs
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