IWMEncProfile2::put_BroadcastMode

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The put_BroadcastMode method specifies the video format of the current profile.

Syntax

HRESULT put_BroadcastMode(
  WMENC_PROFILE_BROADCAST_MODE  enumBroadcastMode
);

Parameters

enumBroadcastMode

[in]  A member of the WMENC_PROFILE_BROADCAST_MODE enumeration type specifying the broadcast mode.

Return Values

If the method succeeds, it returns S_OK. If it fails, it supports the IErrorInfo interface and returns an HRESULT error code.

Remarks

The get_BroadcastMode method detects which video format is used by the current profile, or you can specify which one you want to use. NTSC content uses a frame rate of 30 frames per second (fps), whiles PAL uses a frame rate of 25 fps. Specify a custom video format if you use a different frame rate.

Example Code

// Include libraries.
#include <windows.h>
#include <atlbase.h>
#include <comdef.h>
#include "C:\WMSDK\WMEncSDK9\include\wmencode.h"

    // Declare variables.
    HRESULT hr;
    IWMEncoder* pEncoder;
    IWMEncProfileCollection* pProColl;
    IWMEncProfile* pPro;

    IWMEncProfile2* pPro2;

    // Initialize the COM library and retrieve a pointer to an IWMEncoder interface.
    hr = CoInitialize(NULL);
    if ( SUCCEEDED( hr ) )
    {
        hr = CoCreateInstance(CLSID_WMEncoder,
            NULL,
            CLSCTX_INPROC_SERVER,
            IID_IWMEncoder,
            (void**) &pEncoder);
    }

    // Retrieve a specific profile.
    if ( SUCCEEDED( hr ) )
    {
        hr = pEncoder->get_ProfileCollection(&pProColl);
    }
    if ( SUCCEEDED( hr ) )
    {
        hr = pProColl->Item(11, &pPro);
    }

    if ( SUCCEEDED( hr ) )
    {
        hr = CoCreateInstance(CLSID_WMEncProfile2,
            NULL,
            CLSCTX_INPROC_SERVER,
            IID_IWMEncProfile2,
            (void**) &pPro2);
    }

    if ( SUCCEEDED( hr ) )
    {
        hr = pPro2->LoadFromIWMProfile(pPro);
    }

    // Retrieves a string indicating the video format.
    WMENC_PROFILE_BROADCAST_MODE eBMode; 
    if ( SUCCEEDED( hr ) )
    {
        hr = pPro2->get_BroadcastMode(&eBMode);
    }
    // Set the video format.

    if ( SUCCEEDED( hr ) )
    {
        hr = pPro2->put_BroadcastMode(WMENC_PFM_PAL);
    }

    // Release pointers.
    if ( pPro2 )
    {
        pPro2->Release();
        pPro2 = NULL;
    }

Requirements

Header: wmencode.h

Library: wmenc.exe

See Also