PennController for IBEX › Forums › Support › Experiment with video stimuli goes blank after 4 trials › Reply To: Experiment with video stimuli goes blank after 4 trials
March 15, 2023 at 8:13 am
#10394
![](https://www.pcibex.net/wp-content/uploads/2018/10/IMG_8365-e1540835663655-150x150.jpg)
Keymaster
Hi,
Unfortunately I cannot efficiently troubleshoot your study right now, because my connection is extremely slow and downloading even a single video takes forever (so I keep hitting the “resources preloading” page before every single trial)
Did you check that every single URL in your CSV file points to a valid file? Does the problem persist if you consolidate your video files in a single zip archive?
Jeremy