IAMTimelineGroup::SetMediaType method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Note
[Deprecated. This API may be removed from future releases of Windows.]
The SetMediaType method sets the uncompressed media type for the group.
Syntax
HRESULT SetMediaType(
[in] AM_MEDIA_TYPE *pmt
);
Parameters
-
pmt [in]
-
Pointer to an AM_MEDIA_TYPE structure describing the format.
Return value
Returns one of the following HRESULT values:
| Return code | Description |
|---|---|
|
Success. |
|
NULL pointer argument. |
|
The specified media type is invalid. |
Remarks
The following media types are supported:
- Uncompressed RGB video
- 16 bits per pixel, 555 format (MEDIASUBTYPE_RGB555)
- 24 bits per pixel (MEDIASUBTYPE_RGB24)
- 32 bits per pixel, with alpha (MEDIASUBTYPE_ARGB32, not MEDIASUBTYPE_RGB32)
- 16-bit stereo PCM audio (MEDIASUBTYPE_PCM)
Video types must use FORMAT_VideoInfo for the format type and VIDEOINFOHEADER for the format block. The VIDEOINFOHEADER2 format is not supported. Also, top-down video formats (biHeight < 0) are not supported.
To specify a compression format for the group, call the IAMTimelineGroup::SetSmartRecompressFormat method.
Note
The header file Qedit.h is not compatible with Direct3D headers later than version 7.
Note
To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also