video and E Prime 2.0

[Peter Quain]

No idea why it might be intermittent, but It could be tearing:

http://en.wikipedia.org/wiki/Screen_tearing

you could try updating video drivers. Also, try running paradigm on 
some different machines

At 03:32 AM 16/07/2012, you wrote:
>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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