mkdir -m 0755 -p /etc/apt/keyrings wget -q -O /etc/apt/keyrings/unifiedstreaming.asc https://stable.apt.unified-streaming.com/unifiedstreaming.pub tee /etc/apt/sources.list.d/unified-streaming.list << __HEREDOC__ deb [arch=amd64 signed-by=/etc/apt/keyrings/unifiedstreaming.asc] https://stable.apt.unified-streaming.com/unsupported bullseye multiverse __HEREDOC__ apt-get update apt-get install mp4splitFor more information, see: documentation for instructions on how to install.