ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Gifv will not load

  • 1 (رد واحد)
  • 1 has this problem
  • 4 views
  • آخر ردّ كتبه FredMcD

more options

The problem: - Gifvs on certain websites like twitter will not load, and when I inspect it, it says:

"Media resource XXXX.mp4 could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_DECODE_ERR (0x806e0004) Details: void mozilla::AppleVTDecoder::OnDecodeError(OSStatus): OnDecodeError:ffffcd9a"

- Other html5 mp4 videos work normally. - Same gifvs work normally in Safari.

Things I have tried: - Clear the cache and cookies - Open the page in a private window with no extensions - Allow autoplay - Set image.animation_mode to normal - Restart in troubleshoot mode. This is the weird part: gifv does load in troubleshoot mode, and then if I simply restart firefox in normal mode, everything works fine magically (for any website). But it only lasts for a few hours, the next day it will break again.

Firefox version: 89.0.2 OS version: macOS Catalina 10.15.7

Any thoughts on what goes wrong?

'''The problem:''' - Gifvs on certain websites like twitter will not load, and when I inspect it, it says: "Media resource XXXX.mp4 could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_DECODE_ERR (0x806e0004) Details: void mozilla::AppleVTDecoder::OnDecodeError(OSStatus): OnDecodeError:ffffcd9a" - Other html5 mp4 videos work normally. - Same gifvs work normally in Safari. '''Things I have tried:''' - Clear the cache and cookies - Open the page in a private window with no extensions - Allow autoplay - Set image.animation_mode to normal - Restart in troubleshoot mode. This is the weird part: gifv does load in troubleshoot mode, and then if I simply restart firefox in normal mode, everything works fine magically (for any website). But it only lasts for a few hours, the next day it will break again. Firefox version: 89.0.2 OS version: macOS Catalina 10.15.7 Any thoughts on what goes wrong?

Modified by qiyidi2012

All Replies (1)

more options

Are you using any adblocker or other such programs? Try disabling them on that website.


Load the web page. Then, to reload the page bypassing the cache and force a fresh retrieval; Ctrl+Shift+R (Mac=Command+Shift+R)

Try this several times.