是streamers解码器问题，没有该解码器会提示，网络错误，连接失败，设置里可提交反馈，添加解码器的方法:
安装解码器： sudo dnf install gstreamer-ffmpeg vlc gstreamer-plugins-ugly gstreamer-ffmpeg gstreamer-plugins-bad gstreamer-plugins-ugly ffmpeg libvdpau mpg123 mplayer mplayer-gui gstreamer1-libav gstreamer1-plugins-bad-freeworld gstreamer1-plugins-ugly