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DVD_VideoAttributes Structure

  • Artigo
 
Microsoft DirectShow 9.0

DVD_VideoAttributes Structure

The DVD_VideoAttributes structure describes the attributes of the video stream for the current title or menu.

Syntax

typedef struct tagDVD_VideoAttributes {
    BOOL                     fPanscanPermitted;
    BOOL                     fLetterboxPermitted;
    ULONG                    ulAspectX;
    ULONG                    ulAspectY;
    ULONG                    ulFrameRate;
    ULONG                    ulFrameHeight;
    DVD_VIDEO_COMPRESSION    Compression;
    BOOL                     fLine21Field1InGOP;
    BOOL                     fLine21Field2InGOP;
    ULONG                    ulSourceResolutionX;
    ULONG                    ulSourceResolutionY;
    BOOL                     fIsSourceLetterboxed;
    BOOL                     fIsFilmMode;
} DVD_VideoAttributes;

Members

fPanscanPermitted

TRUE means the picture can be shown as pan-scan if the display aspect ratio is 4 x 3.

fLetterboxPermitted

TRUE means the picture can be shown as letterbox if the display aspect ratio is 4 x 3.

ulAspectX

The video stream's X aspect (4 or 16).

ulAspectY

The video stream's Y aspect (3 or 9).

ulFrameRate

The frame rate in hertz (Hz), either 50 or 60.

ulFrameHeight

The frame height in lines (525 for a frame rate of 60 Hz or 625 for 50 Hz).

Compression

Variable of type DVD_VIDEO_COMPRESSION indicating the MPEG compression type used on the disc.

fLine21Field1InGOP

TRUE means there is user data in line 21, field 1.

fLine21Field2InGOP

TRUE means there is user data in line 21, field 2.

ulSourceResolutionX

The x-axis source resolution (352, 704, or 720).

ulSourceResolutionY

The y-axis source resolution (240, 480, 288, or 576).

fIsSourceLetterboxed

TRUE means the source video is in letterbox format. Subpictures and menu buttons can only be displayed in the active video area.

fIsFilmMode

For 625/50 Hz systems, TRUE means "film mode" and FALSE means "camera mode."

Remarks

This structure is filled when an application calls the IDvdInfo2::GetCurrentVideoAttributes method.

Requirements

Header: Dshow.h.

See Also