video and E Prime 2.0

[Lisa Levinson]

Good to know that I am not alone in attempting to solve this problem but no 
solution as of yet. I came across a posting from 7/11/11 related to my 
movie clip problem which David Vinson responded to very thoroughly on 7/13 
but while this information does shed some light on my situation it does not 
seem to completely address my predicament.  For some reason the .avi video 
files I loaded to E Prime for an experiment are now not running properly 
after otherwise running without issue during two experimental runs. It 
seems that the pixelated image (a gray scale gradient that traverses left 
to right) separates horizontally as it runs for parts of the presentation. 
The image does not always become disrupted at the same point during the run 
nor does the image break in the same area. I think the issue may be due to 
the 100ms stimulus presentation but it is strange that it did at one time 
run correctly. 

A colleague and I attempted to find the change the format code from .avi to 
mpg but it will not run at all with any of the reformatted versions. I do 
not think we tried Xvid Codec which I see worked for someone else. That 
will be Monday's project. Again, not sure if my issue is one of formatting 
or one of presentation duration. It may be that with EPrime the 100ms run 
time and various inter-stimulus intervals (600ms-1000ms) makes loading the 
files in that time frame problematic. Of course, the fact that it worked 
and now doesn't is the true mystery.

Anyone have thoughts????
Lisa

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