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CentOS 8 的 firefox 無法播放youtube影片錯誤如下 
 
 
 
 
 
需安裝 ffmpeg 
 
首先 
 
更新 
- dnf install --nogpgcheck https://dl.fedoraproject.org/pub/epel/epel-release-latest-$(rpm -E %rhel).noarch.rpm
 
 - dnf install --nogpgcheck https://mirrors.rpmfusion.org/free/el/rpmfusion-free-release-$(rpm -E %rhel).noarch.rpm https://mirrors.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-$(rpm -E %rhel).noarch.rpm
 
  複製代碼 
 
最後 
- yum install ffmpeg ffmpeg-devel -y
 
  複製代碼 
如果出現錯誤 
needed by ffmpeg-4.2.9-1.el8.x86_64 from rpmfusion-free-updates  
 
 
 
 
執行powertools 
- dnf config-manager --set-enabled powertools
 
  複製代碼 
 
 
NetYea,網頁設計,網頁優化,hcdt,關鍵字優化 
https://forums.rockylinux.org/t/install-ffmpeg-problem/4506 
 
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