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My Firefox doesn't play MP4s

  • 4 svar
  • 2 har detta problem
  • 5 visningar
  • Senaste svar av cor-el

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It seems like I simply can't play MP4s anymore in Firefox...specifically when I open them in their own tab. Either they will appear as a blank box, or they will play for about a second then pause and become unresponsive, or it will give me the error message "video format or MIME type is not supported". Basically it will error out in a dozen different ways, but the result is always that I CAN'T WATCH THE VIDEO!

I tried googling, but all the top search results were from 2015, and their suggestions didn't work. I also updated my video card drivers, but that didn't change anything. Furthermore if I ever try a video that doesn't work on FF on Chrome it will work perfectly so the issue is specifically with FF. I'm seriously getting tired of this problem, please help!

It seems like I simply can't play MP4s anymore in Firefox...specifically when I open them in their own tab. Either they will appear as a blank box, or they will play for about a second then pause and become unresponsive, or it will give me the error message "video format or MIME type is not supported". Basically it will error out in a dozen different ways, but the result is always that I CAN'T WATCH THE VIDEO! I tried googling, but all the top search results were from 2015, and their suggestions didn't work. I also updated my video card drivers, but that didn't change anything. Furthermore if I ever try a video that doesn't work on FF on Chrome it will work perfectly so the issue is specifically with FF. I'm seriously getting tired of this problem, please help!

Alla svar (4)

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Update: I tried disabling all my addons and the problem persists...

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You can open the YouTube test page to check support in Firefox for playing HTML5 media.