Runtime.getRuntime().exec(command);向ffmpeg写入byte[],当byte[]很大时，向outputstream写入时会很慢吗

当向`OutputStream`写入大量数据时，写入速度可能会减慢，因为`OutputStream`的缓冲区可能会变满。当缓冲区变满时，写入操作将被阻塞，直到缓冲区中的一些数据被写入磁盘或其他目标。因此，当写入大量数据时，建议使用`BufferedOutputStream`来缓冲输出。此外，还可以考虑使用多线程并发写入，以提高写入速度。

相关问题

Runtime.getRuntime().exec(command);向ffmpeg写入byte[],为什么byte[]数据很长时 写入到ffmpeg会阻塞

可能是因为写入到ffmpeg的数据量太大，导致写入的过程中需要等待ffmpeg处理完之前的数据才能继续写入，从而造成了阻塞。此外，也可能是因为写入的数据量过大导致了内存溢出，从而导致阻塞。为了解决这个问题，可以考虑将大的byte[]数据拆分成多个小的byte[]数据进行传输，或者使用线程池等技术来进行异步操作，使得写入数据的过程不会阻塞程序的执行。

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.