URL of experiment: https://run.pavlovia.org/Mi_Lab/engagement-in-a-virtual-world-cb1-v2/html
Description of the problem:
I’m running a Pavlovia study which involves playing a ~350mb, .mp4 video followed by a brief memory task. Numerous people from my lab piloted the study from a variety of locations, countries, devices, and browsers to ensure participants wouldn’t encounter issues downloading the video file at the beginning of the experiment. Everyone who piloted it was able to download all resources in under 3 minutes, except for those using Safari.
When we launched the study, about half of the participants were able to download everything just fine. However, many participants contacted me saying they were unable to download the resources. One participant said it took them over an hour for the files to download, and another got the following error:
Engagement in a Virtual World CB1 V2
unable to download resource: EVW_CB1_2.mp4 (FILE_LOAD_ERROR)
Try to run the experiment again. If the error persists, contact the experiment designer.
I’m not sure what is going wrong for the participants who are encountering this problem, and I cannot replicate the error. I confirmed with the folks who had issues that they were using Chrome, Firefox, or Edge (all which we have had success with). We have tested the experiment on both fast and slow internet connections (including VPNs) and have not had any problem downloading the resources using the appropriate browsers.
Are there any known issues related to this error? Is it possible that this could be caused by multiple participants downloading the files at the same time?
I am pretty new to PsychoPy and Pavlovia so anything helps. Thanks very much for your time!