4-13: Video Widget

The Video Widget is used to display standard NTSC or PAL analog video.

Most displays allow showing only one video input at a time.

The PV700 has two video decoders which allows having two active Video Widgets on the display at the same time.

There is currently no capability to overlay graphics over the video feed.

Download the Example which demonstrates how to setup the dual video feed on a PV700 in Powervision version 4.797

Widget Aspect Ratio

Size the Video Widget in the Page Designer to maintain the aspect ratio of 4:3 according to NTSC/PAL specifications for best performance.

NTSC/PAL Mode Selection

From the Video Widget properties select the default setting then programmatically the selection can be changed from the enumerated variable screen.videomode. 

Input Selection

Each display has a different number of video inputs available. Which input is displayed can be change by the operator from a button press or other coding method by calling a action to select the desired input.

• iMX35 Processor Platform - Use the action Screen->SelectVideoInput(Video#)
• M2/G1e Processor Platform  - Use the action VideoApp->SelectVideoInput(Video#)
• PV700 - Use the action VideoApp->SelectVideoInput(Decoder#, Input#)

Decoder Selection

For the PV700 you must select which video decoder to assign to a video widget from its properties. This becomes hard coded and cannot be changed programmatically.

Flip/Mirror/Angle

The video widget has additional properties that let you flip, mirror, or rotate to a specific angle. This is useful when using a regular camera as a backup camera. Use the settings found in the widget properties and not the video application to mirror or flip the video image.