Video: Cannot close player in Firefox when plugin is installed

[itsthejoker]

System info:

• Ubuntu 21.04
• 32GB RAM
• Ryzen 7 2700X
• Firefox 90.0

When launching a video on the demo site (https://demo.photoprism.org/browse?view=mosaic&order=newest&public=true&quality=3) I cannot exit the video player on Firefox. Clicking around the video generates an error in the console but does nothing visually. I can close the video as expected when using Chromium.

Error:

TypeError: e.pause is not a function    app.js:2:2368793
    stop https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    onClose https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    click https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    Ue https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    n https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    _wrapper https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2

    Ge https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    $e https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    je https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    Ue https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    n https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2
    _wrapper https://demo-cdn.photoprism.org/static/build/app.js?1f68e8e1:2

[graciousgrey]

Just tested it here (Linuxmint, Firefox 90.0) and it works fine.

Is anyone else observing this error?

[rickysarraf]

No problem here either. Running PhotoPrism develop branch + Firefox 90.0

[lastzero]

I've noticed a similar error in Firefox last year, triggered by mouse over playback on live photos. We fixed it, but maybe there's still an edge case left?

[lastzero]

@itsthejoker I'm not sure how to trigger this error. Works for me on our demo using the latest Firefox on macOS and Linux. If you can reproduce it, can you please describe what exactly you're doing, or share a screen recording?

[itsthejoker]

I did some more troubleshooting. I apologize, I've found the issue -- it's with an extension that I have installed: https://github.com/codebicycle/videospeed

Disabling that extension fixes the issue for me and I can close the video as expected. With the extension enabled, I receive the error above. I don't know if that's an edge case that you want to focus on or not, but thanks for your help and apologies. I'll go ahead and close this now.

[ecker00]

My family use this extension on all our machines (Vivaldi and Firefox), so we're unable to close videos. The browser console when you click outside the video to close it, logs error e.pause is not a function.

Looking a bit closer at the source code of PhotoPrism, seems that the video element returned from methods.videoEl() { this.$el.childNodes[0] } function does not get the video element with this extension enabled. Inspecting the HTML, the extension slightly modifies the HTML, as it adds a child element <div class="vsc-controller vsc-hidden"></div> above the video HTML, so the videoEl() function grabs the extension element instead of the <video>.

A slight modification to the javascript should make the PhotoPrism video player more robust and not break from small markup changes.

[lastzero]

Feel free to suggest tested code changes via pull request. We are currently too busy to do this and perform all the testing necessary.

[ecker00]

@lastzero Found the offending line in the Vue source and created a pull request. 👍 Only changed the line so it specifically grabs the video element instead of the first child:
return this.$el.getElementsByTagName('video')[0];