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Like I keep telling you. The Windows Media Format SDK is made for this. It's THE SDK for ASF
files, which is what a WMV file is.
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While I can't write it and post it here, maybe I can point you in the right direction.
You'll need to read the video stream(s) (there could be more than one) and write them to to
the new file. At the same time you will read PCM samples from the wave file and write them
to a new, separate audio stream in the new file. For synchronizing audio and video you'll need
to handle the sample time (passed to IWMWriter::WriteSample()) somehow.
It's alot of code to post an example here but there is plenty of sample code in the Windows Media
Format SDK. The "WMVCopy" sample application is a good place to start.
Hope this helps,
Mark
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Hi,
Thanks for your comments!.
Now I am using the Windows Media Format SDK for adding the wave file to wmv file. I have written the following code, but it is not allowing to add audio to me. It adds either audio or video and not the both. WHat may be the reason
public static void AddAudioVideo()
{
try
{
// Create a WMEncoder object.
WMEncoder Encoder = new WMEncoder();
// Retrieve the source group collection.
IWMEncSourceGroupCollection SrcGrpColl = Encoder.SourceGroupCollection;
// Add a source group to the collection.
IWMEncSourceGroup SrcGrp = SrcGrpColl.Add("SG_1");
// Add a video and audio source to the source group.
IWMEncSource SrcAud = SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO);
SrcAud.SetInput("D:\\wmv\\input\\2006_10_16_13_9_49_759.wav", "", "");
IWMEncVideoSource2 SrcVid = (IWMEncVideoSource2)SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_VIDEO);
SrcVid.SetInput("D:\\wmv\\output\\TestOutPut.wmv", "", "");
// Specify a file object in which to save encoded content.
IWMEncFile File = Encoder.File;
File.LocalFileName = "D:\\wmv\\output\\OutputFile.wmv";
// Choose a profile from the collection.
IWMEncProfileCollection ProColl = Encoder.ProfileCollection;
IWMEncProfile Pro;
for (int i = 0; i < ProColl.Count; i++)
{
Pro = ProColl.Item(i);
if (Pro.Name == "Windows Media Video 8 for Local Area Network (384 Kbps)")
{
SrcGrp.set_Profile(Pro);
break;
}
}
// Start the encoding process.
// Wait until the encoding process stops before exiting the application.
Encoder.PrepareToEncode(true);
Encoder.Start();
Console.WriteLine("Press Enter when the file has been encoded.");
Console.ReadLine(); // Press Enter after the file has been encoded.
}
catch (Exception e)
{
// TODO: Handle exceptions.
}
}
///////
}
Regards,
Hemant.
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What language is that code written in? 
*shrug*
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Hi Guys,
I am currently working on retrieving Computer compoment's data using WMI objects. Everything fine but whenever I try to convert BSTR type to char type I encounter memory violations.
Here is my code:
hr = pclsObj->Get(L"Speed", 0, &vtProp, 0, 0);
char* cap = _com_util::ConvertBSTRToString(vtProp.bstrVal); //Problem occurs here
Return type of the Speed querry is uint32.
If i query Caption which is return type is uint64 there is no access vioalation.
I know topic is very specific, also it may be dicussed hundereds of time.
Yusuf Kabakci
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If the return type is uint32, then why do you think its a BSTR ?
The ConvertBSTRToString() function expects a BSTR and you are passing in a uint32 which is why it crashes.
You need to convert it to a string FIRST, the 'Get()' function will not do this for you, if it did, it would return a BSTR.
Try:
<br />
HRESULT hr = pclsObj->Get(L"Speed", 0, &vtProp, 0, 0);<br />
if(SUCCEEDED(hr))<br />
{<br />
TCHAR szSpeed[20] = {'\0'};<br />
_sprintf(szSpeed, "%l", vtProp.lVal);<br />
}<br />
Darka [ Xanya]
"I am not a slave to a god that doesn't exist."
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YusufK wrote: char* cap = _com_util::ConvertBSTRToString(vtProp.bstrVal); //Problem occurs here
Return type of the Speed querry is uint32.
reason for crash is that you are converting the long value to String without proper way!
try to check what VT member contain before proceeding ie.
if(vtProp.vt==VT_BSTR)
char* cap = _com_util::ConvertBSTRToString(vtProp.bstrVal); //Problem occurs here
else
ltoa(vtProp.lVal,cap,10);
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief And You
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Hello,
how to change an content of a file?
Ok, i know how to open and read file for changing, now i need to replace one string with a new value!
For example, if the file have only this one sentence:
"Have a good day"
i like to replace the "good" with "nice"! so that the content is now "Have a nice day"
In my solution i read all file content in an CString, than use CString::Replace(csOldString, csNewString)
and write then complete content to the file back!
I mean that is posible to solve this with better solution, maybe without reading all content!
Is there any way to do this different as im described here or is this the common way for this?
regards
break;
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there's no way to "change" the content of a file.
you have to open it, read it, modify what you want in RAM, overwrite it, and close it...
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Hi,
ok, thanx for Answer, so is my guess right!?
regards
break;
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Hello WhiteSky,
thank you, that is what i mean, read file -> get content->modify->write back to file!
regards
break;
-- modified at 7:43 Tuesday 31st October, 2006
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Hello WhiteSky,
thank you wery much for ask!
I think yes?!
I read my file and store all data in an CString, than to modify that content
use CString::Replace(LPCTSTR csOldString, LPCTSTR csNewString);
In steps looks like this:
1.) Open File in "r" modus
2.) Store Content in CString
3.) Close File
4.) modify Content
5.) Open the same file in "w+" modus!???
6.) Write content back to file
I use fopen() and fprintf() to read and write!
so that my idea?:-> 
i mean it does what i need, dont know if its the best way, that is the reason
why i ask im comunity!
with best regards
break;
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I think its good because you dont know where's text that you want to replcase 
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You can use variuos seek functions (fseek, ofstream::seekp, ..., depending on API) to set the write pointer position in a file, and then start replacing data inplace. You cannot insert extra bytes however, but you can overwrite existing data.
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Hello,
not need to insert extra bytes, to overwrite existing data is ok, now need to know what when the new data ar larger then the old!?
So i think i use the previous way, i dont need this in an multithread function, i read only one file
one times nad change a part of them, replace the old part with new content!
regards
break;
-- modified at 8:48 Tuesday 31st October, 2006
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I have problem using the function ResUtilStartResourceService(...)
i included the file clusapi.h and the compiler gives me the error "undeclared identifier".
i tried to include the file Resapi.h the compiler gives me the error "unresolved external symbol _ResUtilStartResourceService@8".
Best regards,
Simos
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I figured out the error.
The problem now that the service is installed, but when i call the function ResUtilStartResourceService(...) it returns error code 1060 (service does not exist).
Can any body help with this.
Best regards,
Simos
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Check the name of the service you are passing to the function, is is the correct one ?
Darka [ Xanya]
"I am not a slave to a god that doesn't exist."
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Yes it is correct.
Regards,
Simos
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Yes it is correct yet it returns the error 1060, any ideas?
Regards,
Simos
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Silly question....
Have you actually installed your service, if so how did you do this ?
It does sound like this hasn't been done, you must install the service correctly first.
Darka [ Xanya]
"I am not a slave to a god that doesn't exist."
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ResUtilStartResourceService() is defined in "Resapi.h"
You are including the wrong header file, as you can see from the ResUtilStartResourceService() help page in the MSDN (if you'd looked )
Darka [ Xanya]
"I am not a slave to a god that doesn't exist."
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