Process process = Runtime.getRuntime().exec(ffmpegCmd);

As an AI language model, I do not have access to the full context of your code. However, I can explain what this line of code does in general.

This line of code uses the Runtime class in Java to execute a command in the operating system's command line interface. The command being executed is stored in the variable ffmpegCmd, which likely contains a command to run the FFmpeg multimedia framework.

The exec() method of the Runtime class returns a Process object that represents the new process created by the command. This allows the Java program to interact with the new process and perform tasks such as reading its output or sending input.

Overall, this line of code is likely used to run FFmpeg from a Java program and perform some multimedia processing tasks.