IFileSourceFilter::Load method (strmif.h)

Article
02/22/2024

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The Load method causes a source filter to load a media file.

Syntax

HRESULT Load(
  [in] LPCOLESTR           pszFileName,
  [in] const AM_MEDIA_TYPE *pmt
);

Parameters

[in] pszFileName

Pointer to the name of the file to open.

[in] pmt

Pointer to the media type of the file. This can be NULL.

Return value

Returns an HRESULT value.

Remarks

This method initializes the interface. It is not designed to load multiple files, and any calls to this method after the first call will fail.

For the File Source (Async) filter, pszFileName specifies the absolute path name of a local file. For the File Source (URL) filter, pszFileName specifies the URL of a file to download. For other filter implementations, pszFileName might require a file name or a URL, depending on the filter.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib