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After recent update, Firefox displays MP4 incorrectly.

  • 2 antwurd
  • 1 hat dit probleem
  • 4 werjeftes
  • Lêste antwurd fan CMJillJones

CMJillJones
CMJillJones
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I have a number of web courses I'm developing that until recently displayed perfectly fine. A few days ago, after a FF update, I opened one up in Firefox, and ALL of my MP4s are displaying with an enlarged and pixellated ghost of the video over the top. The color is wrong/obscured by the ghost, and it's really incredibly awful. I've tested on other systems, and everything seems fine, so I know it's something particular to this installation. I have uninstalled and reinstalled FF with no change in the behavior.

At this point, this is really more of a mystery than anything else, since I know the video is still functioning properly on other systems, but I would really appreciate understanding what has happened.

Thanks for any insight!

I have a number of web courses I'm developing that until recently displayed perfectly fine. A few days ago, after a FF update, I opened one up in Firefox, and ALL of my MP4s are displaying with an enlarged and pixellated ghost of the video over the top. The color is wrong/obscured by the ghost, and it's really incredibly awful. I've tested on other systems, and everything seems fine, so I know it's something particular to this installation. I have uninstalled and reinstalled FF with no change in the behavior. At this point, this is really more of a mystery than anything else, since I know the video is still functioning properly on other systems, but I would really appreciate understanding what has happened. Thanks for any insight!

Alle antwurden (2)

Gingerbread Man
Gingerbread Man
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Do you have any example links to the MP4 files that can be tested?
Have you tried updating your video card drivers?
Have you tried disabling hardware acceleration?

CMJillJones
CMJillJones Fraacheigener
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Hi there and thanks for the reply,

Unfortunately, I do not have any links I can share. The videos are proprietary, and what I have access to is local only. I could post a screenshot if that would be useful.

I haven't tried either of these solutions yet for a couple of reasons - the biggest one being that the videos look fine in IE and Chrome. It's only FF that is displaying the strange behavior, and they *used* to be fine in FF as well. Something, somewhere, broke.

I'm about to get a new system, so the issue will soon be moot. But I'll give the driver route a go tomorrow and see what happens. I honestly don't know enough to be able to tell if hardware acceleration is currently in use.