ffmpeg -i 地址 -strict -2 outfile 使用yum安装ffmpeg .参考：https://rpmfusion.org/Configuration # Fedora 22 and later: $ sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://dow...

process = subprocess.Popen('cmd命令') pid = process.pid print(pid)