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Why can't play animated Gifs in Firefox 57?

  • 4 replies
  • 2 have this problem
  • 153 views
  • Last reply by James

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After updating to Firefox 57 I cant play animated gifs, and I know it has something to do with Toggle Animated Gifs (which is a legacy add-on) because I tested this in Virtualbox with Firefox 56 and installing Toggle Animated Gifs and after I update Firefox to version 57 I can longer play animated gifs.

After updating to Firefox 57 I cant play animated gifs, and I know it has something to do with Toggle Animated Gifs (which is a legacy add-on) because I tested this in Virtualbox with Firefox 56 and installing Toggle Animated Gifs and after I update Firefox to version 57 I can longer play animated gifs.

Chosen solution

Could you check this setting:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste anim and pause while the list is filtered

(3) The image.animation_mode preference can have these values:

  • normal -- loops as long as specified by the image (this is the default, right-click > Reset to restore this value)
  • none -- shows first frame only
  • once -- plays the animation through once, stays on last frame
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All Replies (4)

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Chosen Solution

Could you check this setting:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste anim and pause while the list is filtered

(3) The image.animation_mode preference can have these values:

  • normal -- loops as long as specified by the image (this is the default, right-click > Reset to restore this value)
  • none -- shows first frame only
  • once -- plays the animation through once, stays on last frame
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jscher2000 said

Could you check this setting: (1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk. (2) In the search box above the list, type or paste anim and pause while the list is filtered (3) The image.animation_mode preference can have these values:
  • normal -- loops as long as specified by the image (this is the default, right-click > Reset to restore this value)
  • none -- shows first frame only
  • once -- plays the animation through once, stays on last frame

Thanks that solved my problem.

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Note that some animated GIF files are actually MP4 files (.gifv) that are played with the HTML5 media player.

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And if it is by HTML5 player make sure you fully support it as all check marks should be blue on https://www.youtube.com/html5/

If not then you may not have packages installed from your package manager in your Linux distro like FFmpeg.