IAMTimelineGroup::SetMediaType

Microsoft DirectX 8.1 (C++)

The SetMediaType method sets the uncompressed media type for the group.

Syntax

HRESULT SetMediaType(
    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
S_OK	Success.
E_POINTER	NULL pointer argument.
VFW_E_INVALIDMEDIATYPE	The specified media type is invalid.

Remarks

Currently, 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.

To specify a compression format for the group, call the IAMTimelineGroup::SetSmartRecompressFormat method.

See Also