Hi Maëva!

You may find useful this paper: The timing mega-study: comparing a range of experiment generators, both lab-based and online (full available online). In this article the authors compare several web-based software (e.g. PsychoPy, Gorilla, jsPsych) based on their performance in response time, visual duration and audio-visual coordination.

Specifically, I recommend you to see online version of Table 3 (https://psychopy.org/timing/2020/table3.html) where you can sort the packages by any indicator you want.

Hope it helps!

Joaquín Migeot thank you so much for your very complete answer! I had no idea I could use PsychoPy.

Possibly, this is also helpful: Article Building, Hosting and Recruiting: A Brief Introduction to Ru...

Kindly check https://link.springer.com/article/10.3758/s13428-020-01501-5

Also check https://link.springer.com/article/10.3758/s13428-019-01237-x

And https://www.socialsciencespace.com/2020/04/whats-that-you-want-to-run-an-online-experiment/

I would like to know how many minutes is the short video and what kind of videos are they and how big are they?