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Video playback not working

  • 5 replies
  • 1 has this problem
  • 995 views
  • Last reply by Jens Lyn IV

Jens Lyn IV
Jens Lyn IV
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Video playback initially works, until suddenly it doesn't; no new videos will work, and videos that previously played in the same browsing session will stop working. Easy to reproduce on Reddit by browsing any video-heavy subreddit. Leaving a broken video in a tab seems to infect the rest of the browser across websites; if a broken video from site A is open in another tab, videos on site B won't play.

Sometimes quitting and restarting Firefox is enough to temporarily get video playback working again; sometimes I have to manually clear the browser cache; at least once I've had to reboot my phone.

Screen recording with symptoms: https://youtu.be/5O6FOax7ozA

Device is a Sony Xperia I V

Video playback initially works, until suddenly it doesn't; no new videos will work, and videos that previously played in the same browsing session will stop working. Easy to reproduce on Reddit by browsing any video-heavy subreddit. Leaving a broken video in a tab seems to infect the rest of the browser across websites; if a broken video from site A is open in another tab, videos on site B won't play. Sometimes quitting and restarting Firefox is enough to temporarily get video playback working again; sometimes I have to manually clear the browser cache; at least once I've had to reboot my phone. Screen recording with symptoms: https://youtu.be/5O6FOax7ozA Device is a Sony Xperia I V
Attached screenshots

Chosen solution

Thank you, that was it! Mildly embarrassed I didn't think to test this myself.

The culprit seems to be 'strict' tracking protection; I cannot reproduce the problem after turning it down to 'normal'.

Sorry about the late response, kept getting error messages when trying to reply...

Read this answer in context 👍 0

All Replies (5)

Jens Lyn IV
Jens Lyn IV Question owner
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I was instructed to post this here in a comment left by staff on my app review.

I guess monitoring the Play Store for negative reviews is more important to Mozilla than responding to support request here...

Top trending Today
Top trending Today
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"If video playback in Firefox on your Sony Xperia device is problematic, ensure Firefox is updated, clear its cache regularly, disable any interfering add-ons, check for OS updates, verify internet stability, try another browser, and consider reporting the issue to Mozilla or Sony support."

Jens Lyn IV
Jens Lyn IV Question owner
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Who or what are you quoting?

Does posting here not constitute "reporting the issue to Mozilla"?

Paul
Paul
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Hi

What level of enhanced tracking protection do you have set?

Do you have any add-ons installed in Firefox for Android?

Jens Lyn IV
Jens Lyn IV Question owner
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Chosen Solution

Thank you, that was it! Mildly embarrassed I didn't think to test this myself.

The culprit seems to be 'strict' tracking protection; I cannot reproduce the problem after turning it down to 'normal'.

Sorry about the late response, kept getting error messages when trying to reply...

Modified by Jens Lyn IV