Disruption before fixation point video
I am trying to introduce a dynamic fixation point in my trial sequence. To achieve this goal, I use .mp4 file. The video loading seems works perfectly. However, there is sometimes a kind of disruption (black screen) just before the fixation point video. You can see an example of this problem here : https://youtu.be/wNxuTLgSxrM
To solve this problem, I tried to introduce an empty sketchpad (for a short time – 16 ms) just before the fixation point video. It seems to reduce the number of disruptions, but there are still present.
Do you have any idea of how I can solve this problem? And the potential impact on the target timing presentation (just after the fixation point video).
Thank you in advance!