ANALOGVIDEOINFO structure (amvideo.h)

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 ANALOGVIDEOINFO structure maintains information about the format of the analog video signal.

Syntax

typedef struct tagAnalogVideoInfo {
  RECT           rcSource;
  RECT           rcTarget;
  DWORD          dwActiveWidth;
  DWORD          dwActiveHeight;
  REFERENCE_TIME AvgTimePerFrame;
} ANALOGVIDEOINFO;

Members

rcSource

Source video rectangle.

rcTarget

Destination target rectangle.

dwActiveWidth

Source video width.

dwActiveHeight

Source video height (483 for NTSC, 575 for PAL/SECAM).

AvgTimePerFrame

Average time per frame in 100-nanosecond units.

Remarks

Filters using this format usually pass the video signal using a hardware-based connection rather than using memory-based transports.

An example of a definition of an analog video media type connection would be a connection of NTSC video using "M" color encoding. This would use a major media type of MEDIATYPE_AnalogVideo, a subtype of MEDIASUBTYPE_AnalogVideo_NTSC_M, and a format type of FORMAT_AnalogVideo.

Requirements

See also

DirectShow Structures