BackVideo (Questionnaire Files)

QuickInfo

Display a video in the background as the current item is presented.

Value

By default, MediaLab will play any video file that is supported by the Windows Media Player. This typically includes .mpg, .avi, .asf, .wmv, .dat, and .mpv video formats.

Purpose

In Questionnaire Files, all item types except executables, DirectRT and Inquisit sessions support the Backvideos field. If you would like a video played in the background simply type in the name of the video file in the Backvideos field of the item.

Advanced Hints

By default, the file in the Backvideos field will be centered on the screen and play at its encoded size. To specify the location of the backvideo, use the top and left parameters in parentheses after the file name. For example, place the video file named "myvideo.bmp" 50 pixels from the top and 200 pixel from the left, type

myvideo.bmp (t50,l200)

in the Backvideo field.

To specify the size of the file in the Backvideos field, use the width parameter in parentheses after the file name. For example, to play a video file named "myvideo.bmp" at a resolution of 300 by its proportional height, type

myvideo.bmp (w300)

in the Backvideo field.

As with any parameters, you may combine multiple parameters in a single set of parentheses.