Unknown error when running experiment in Pavlovia

Online experiments
1

URL of experiment: Pavlovia

Description of the problem: I have designed an experiment in psychopy which I now need to run in pavlovia as part of a University thesis project. The experiment involves a series of videos with slider responses playing in a randomised loop. The following error appears when I try to run my experiment in pilot mode on pavlovia:

Unfortunately we encountered the following error:

  • when setting the movie of MovieStim: practice_movie
  • he argument: RIFF �AVI LIST�hdrlavih8V�x����LISTtstrlstrh8vidsd�x�strf((��dvsd��Cr8rT���TorPPrPRC.prproj/LAdobe Premiere Pro CS6 (WindowsLISTJINFOICRD2016-02-03T10:21:44ISFT!Adobe Premiere Pro CS6 (Windows)LIST,Tdattc_O00:00:00:00tc_A00:00:00:00JUNK.

Try to run the experiment again. If the error persists, contact the experiment designer.

The experiment works perfectly in psychopy, and I have tried a variety of things to solve this problem but the error message persists. If anyone can help explain this error message to me, it would be greatly appreciated, as I am an absolute beginner when it comes to programming experiments. I have also attached a photo of the error message, unfortunately, I cannot read the entire message as unknown symbols are appearing as boxes on my computer.

Thank you,
Siofra

2

Hi

What format is your practice movie in?

3

Hi,

The videos are in “.avi” format

4

Use H.264 encoded MP4 files with AAC audio encoding. d.govan

(Quote is from my crib sheet)

5

Hi, there is actually no audio on the videos, do I still need to change the format in that case?

6

Definitely try mp4 instead of avi

7

Hi, I converted the videos to mp4 successfully, and my experiment is now starting up, but after my introduction text shows, there is just a blank white screen when the videos should begin playing. No error message is appearing but the videos still aren’t playing for me. I have tried changing the start time of the video to 1 second from zero seconds, and the size of the video to [1,2] as is recommended in psychopy. The videos are followed by a slider response. Any advice on further changes I may need to make? Thank you for your help!