搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

Can't play video

  • 1 回覆
  • 1 有這個問題
  • 9 次檢視
  • 最近回覆由 FredMcD

more options

Hi,

I am facing issue with playing mp4 video in Firefox. it shows error "no video with supported format and MIME not found". Please help me.

Thank you in advance.

Hi, I am facing issue with playing mp4 video in Firefox. it shows error "no video with supported format and MIME not found". Please help me. Thank you in advance.

所有回覆 (1)

more options

Please provide a public link (no password) that we can check out. No Personal Information Please !


Make sure you are not blocking content.

https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop also see https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/

https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection


Diagnose Firefox issues using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?


Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.