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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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
| Header | amvideo.h (include Dshow.h) |