linux java转amr为mp3

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * 将amr文件转为mp3格式文件
 * 【在windows、linux、mac通用可行的解决方案】
 * 在web项目中只需将ffmpeg命令放到和执行命令的程序同一个目录，调用命令：ffmpeg -i src.amr dst.mp3
 * @author bruse
 *
 */
public class FFmpeg {

	public static boolean amrToMp3(String localPath, String targetFilePath) {

		try {

			System.out.println("**************  ffmpeg ****************");

			java.lang.Runtime rt = Runtime.getRuntime();
			String command = "/Users/bruse/Desktop/ffmpeg -i " + localPath + " " + targetFilePath;

			System.out.println("/Users/bruse/Desktop/ffmpeg exec command = " + command);

			Process proc = rt.exec(command);
			InputStream stderr = proc.getErrorStream();
			InputStreamReader isr = new InputStreamReader(stderr);
			BufferedReader br = new BufferedReader(isr);
			String line = null;
			StringBuffer sb = new StringBuffer();
			while ((line = br.readLine()) != null)
				sb.append(line);

			System.out.println("ffmpeg Process errorInfo: " + sb.toString());

			int exitVal = proc.waitFor();
			System.out.println("ffmpeg Process exitValue: " + exitVal);

			return true;
		} catch (Exception e) {
			System.out.println("ffmpeg exec cmd Exception " + e.toString());
		}
		return false;
	}
	
	public static void main(String[] args) {
		String path1 = "/Users/bruse/Desktop/527732_RA8NRoCNXQcrAKOju7zXXTgXHbHJnt4qXaeSSftbzBaXGnsxT49br2e-H4HMlTp4.amr";
		String path2 = "/Users/bruse/Desktop/bb.mp3";
		amrToMp3(path1, path2);
	}

}  

其中ffmpeg命令文件，从官网下载：
http://ffmpeg.org/download.html