ubuntu16.4+firefox浏览器无法播放视频

1.下载Adobe flash player并提取文件

cd Downloads/flash_player_npapi_linux.x86_64
sudo cp libflashplayer.so /usr/lib/firefox/browser/plugins

sudo cp libflashplayer.so /usr/lib/mozilla/plugins

sudo cp -r usr/* /usr

2. 安装freshplayerplugin

sudo apt-get update && sudo apt-get install freshplayerplugin
sudo apt-get install pepperflashplugin-nonfree