URL of experiment: https://pavlovia.org/hekragness/puppy-in-the-park Description of the problem: I have asked multiple pals to pilot test my project, and most seemed to have no issues. Even though everyone used Chrome, one had an issue where the videos did not load properly and displayed as solid …

As an update: the error on my end seems to have been an one-off, as it works now. For the user on the other end, the glitch is still present. Sometime it presents as a solid color on the screen, and sometimes as in the example below. Any ideas? This person is using Chrome browser on a Windows 10 com…

Hi Haley, Yeah, video encoding can be a bit tricky. I’d recommend trying other software to encode the MP4 to see if that helps. As a little check, does this experiment show the video correctly? https://run.pavlovia.org/tpronk/demo_video/html/ Best, Thomas

Thanks! She says that video DOES display correctly. I’m a little puzzled because it seems like she’s using the same browser as virtually everyone else, yet is the only one with this issue. It’s possibly notable that she reported the longest loading time out of everyone, as well. So maybe a slow conn…

Thanks! I was trying to access the custom-lib folder mentioned but it links to a 404!

What do you mean with the “custom-lib” folder? About your video. I’m not sure how Handbrake works, but I can tell you that the video in the demo I shared is encoded via H.264; that codec tends to work on a lot of different browsers. Maybe encoding your videos using that codec could work too?

Ah, the custom-lib response was to Becca’s comment and link above. Sorry for the confusion! Yes, according to Handbrake and VLC that is the codec fort the videos used… but I think you’re right that it might be worth trying some different software and just see what happens. Thanks!

Hi @HEKragness , sorry to hear PsychoJS is giving you video playback problems :blush: Could you add me in as developer so I can send you a merge request for incorporating the same tweaks as Cailey’s, see if that helps any? Thanks, s.

OK great thanks, merge request issued :crossed_fingers: Cool study! s.

Movies display as solid colors for some users

Online experiments

Becca November 24, 2020, 2:16pm 4

I also want to link another discussion here that could be helpful Movie stim is just a black box on Pavlovia

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Movies display as solid colors for some users

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