Group: Administrators
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Yes, this should be possible.
Play back the video via a <block>'s /bgstim. Set the <block>'s /timeout to the length of the video. Then, simply run a rating trial in an infinite loop. In a nutshell:
<block myblock> / bgstim = (myvideo) / timeout = 30000 / trials = [1=ratingtrial] </block>
<video myvideo> / items = ("example.mpg") / size = (50%, 50%) </video>
<likert ratingtrial> / anchors = [1="slow"; 5="fast"] / position = (50%, 90%) / numpoints = 5 / anchorwidth = 5% / branch = [likert.ratingtrial] </likert>
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