Video Content for Deinterlace and Frame-Rate Conversion

The driver receives a description of video content so that it can determine how it should deinterlace or frame-rate convert such content. The driver receives this video content as a pointer to a DXVA_VideoDesc structure in the following function calls:

• DeinterlaceQueryAvailableModes

• DeinterlaceQueryModeCaps

• DeinterlaceOpenStream

The following examples indicate how the driver performs deinterlacing and frame-rate conversion on the received video content.

Deinterlacing 720 x 480i Content Example

The DXVA_VideoDesc structure is filled as follows to direct the driver to deinterlace 720 x 480i content that is sourced as two fields per sample at a frequency of 29.97 Hz.

Deinterlacing and Frame-Rate Conversion of 720 x 480i Content Example

The OutputFrameFreq member of the DXVA_VideoDesc structure is filled as follows to direct the driver to deinterlace and frame-rate convert 720 x 480i content.

Deinterlacing a Single Field to a Progressive Frame Example

The OutputFrameFreq member of the DXVA_VideoDesc structure is filled as follows to direct the driver to deinterlace a single field to a progressive frame for later MPEG encoding.

Frame-Rate Conversion of 480p Content Example

The DXVA_VideoDesc structure is filled as follows to direct the driver to perform frame-rate conversion on 480p content and to match the monitor display frequency.