Export (0) Print
Expand All

DXVA2_VideoProc Sample

Shows how to use DXVA Video Processing.

This sample programmatically generates video with a primary stream and a substream. The primary stream displays SMPTE color bars, and the substream is a semi-transparent rectangle. The video is then processed and displayed using a DXVA video processor. The user can change the planar alpha values, source and destination rectangles, color adjustments, and color space.

Screenshot of the DXVA2_VideoProc sample

APIs Demonstrated

This sample demonstrates the following DXVA interfaces:

Usage

The DXVA2_VideoProc sample builds a Windows application.

Command line options:

OptionDescription
-hhForces the application to use a hardware Direct3D device and a hardware DXVA device.
-hsForces the application to use a hardware Direct3D device and a software DXVA device.
-ssForces the application to use a software Direct3D device and a software DXVA device.

 

Keyboard commands:

KeyDescription
ALT+ENTERSwitch between windowed mode and full-screen mode.
F1–F8Enter one of the modes shown in the following table.
ENDEnable or disable debugging logging for dropped frames.
HOMEReset a parameter to its initial value.

 

Each of the function keys F1 through F8 switches to a mode in which the arrow keys can be used to adjust a particular rendering parameter. In addition, the color of the substream changes.

KeyDescription
F1

Adjust the alpha values.

  • UP: Increase the planar alpha of both streams.
  • DOWN: Decrease the planar alpha of both streams.
  • RIGHT: Increase the pixel alpha of the substream.
  • LEFT: Decrease the pixel alpha of the substream.

Substream color: White

F2

Adjust the primary stream's source area (zoom).

  • UP: Increase vertically (zoom in).
  • DOWN: Decrease vertically (zoom out).
  • RIGHT: Increase horizontally (zoom in).
  • LEFT: Decrease horizontally (zoom out).

Substream color: Red

F3

Move the primary stream's source area.

  • UP: Move up.
  • DOWN: Move down.
  • RIGHT: Move right.
  • LEFT: Move left.

Substream color: Yellow

F4

Adjust the primary stream's destination area.

  • UP: Increase vertically.
  • DOWN: Decrease vertically.
  • RIGHT: Increase horizontally.
  • LEFT: Decrease horizontally.

Substream color: Green

F5

Move the primary stream's destination area.

  • UP: Move up.
  • DOWN: Move down.
  • RIGHT: Move right.
  • LEFT: Move left.

Substream color: Cyan

F6

Change background color or color space.

  • UP, DOWN: Cycle through color spaces.
  • RIGHT, LEFT: Cycle through background colors.

Substream color: Blue

F7

Adjust brightness and contrast.

  • UP: Increase brightness.
  • DOWN: Decrease brightness.
  • RIGHT: Increase contrast.
  • LEFT: Decrease contrast.

Substream color: Magenta

F8

Adjust hue and saturation.

  • UP: Increase hue.
  • DOWN: Decrease hue.
  • RIGHT: Increase saturation.
  • LEFT: Decrease saturation.

Substream color: Black

 

In each mode, pressing the HOME key resets the parameters for that mode to their initial values.

Requirements

ProductVersion
Windows SDKWindows Vista
Microsoft WindowsWindows Vista

 

Downloading the Sample

This sample is available in the following locations.

LocationPath/URL
Windows SDKSDK Root\Samples\multimedia\mediafoundation\dxva2_videoproc
MSDN Code GalleryDownload from MSDN Code Gallery

 

Related topics

DirectX Video Acceleration 2.0
DXVA Video Processing
Media Foundation SDK Samples

 

 

Community Additions

ADD
Show:
© 2015 Microsoft