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java音频人声解析代码 java 音频

IT技术Adoquery

如何用JAVA从视频中提取音频把视频文件的后缀名改成MP3或者WMA就行了 。不过这么做有一个缺点，这个音频会和原来的视频一样大（文件大?。?。
用JAVA怎样捕获音频输出数据import java.io.*;
import javax.sound.sampled.*;
import java.net.*;
/**
* Title:VoiceChat
* Description: 输出音频（放音程序）
* Copyright:Copyright (c) 2001
* Company:
* @author网络
* @version 1.0
*/
class Playback implements Runnable {
final int bufSize = 16384;
SourceDataLine line;
Thread thread;
Socket s;
Playback(Socket s){//构造器 取得socket以获得网络输入流
this.s=s;
}
public void start() {
thread = new Thread(this);
thread.setName("Playback");
thread.start();
}
public void stop() {
thread = null;
}
public void run() {
AudioFormat format =new AudioFormat(8000,16,2,true,true);//AudioFormat(float sampleRate, int sampleSizeInBits, int channels, boolean signed, boolean bigEndian）
BufferedInputStream playbackInputStream;
try {
playbackInputStream=new BufferedInputStream(new AudioInputStream(s.getInputStream(),format,2147483647));//封装成音频输出流，如果网络流是经过压缩的需在此加套解压流
}
catch (IOException ex) {
return;
}
DataLine.Info info = new DataLine.Info(SourceDataLine.class,format);
try {
line = (SourceDataLine) AudioSystem.getLine(info);
line.open(format, bufSize);
} catch (LineUnavailableException ex) {
return;
}
byte[] data = https://www.04ip.com/post/new byte[1024];//此处数组的大小跟实时性关系不大 ， 可根据情况进行调整
int numBytesRead = 0;
line.start();
while (thread != null) {
try{
numBytesRead = playbackInputStream.read(data);
line.write(data, 0,numBytesRead);
} catch (IOException e) {
break;
}
}
if (thread != null) {
line.drain();
}
line.stop();
line.close();
line = null;
}
}
import java.io.*;
import javax.sound.sampled.*;
import java.net.*;
/**
* Title:VoiceChat
* Description: 音频捕捉（录音程序）
* Copyright:Copyright (c) 2001
* Company:
* @author网络
* @version 1.0
*/
class Capture implements Runnable {
TargetDataLine line;
Thread thread;
Socket s;
BufferedOutputStream captrueOutputStream;
Capture(Socket s){//构造器 取得socket以获得网络输出流
this.s=s;
}
public void start() {
thread = new Thread(this);
thread.setName("Capture");
thread.start();
}
public void stop() {
thread = null;
}
public void run() {
try {
captrueOutputStream=new BufferedOutputStream(s.getOutputStream());//建立输出流 此处可以加套压缩流用来压缩数据
}
catch (IOException ex) {
return;
}
AudioFormat format =new AudioFormat(8000,16,2,true,true);//AudioFormat(float sampleRate, int sampleSizeInBits, int channels, boolean signed, boolean bigEndian）
DataLine.Info info = new DataLine.Info(TargetDataLine.class,format);
try {
line = (TargetDataLine) AudioSystem.getLine(info);
line.open(format, line.getBufferSize());
} catch (Exception ex) {
return;
}
byte[] data = https://www.04ip.com/post/new byte[1024];//此处的1024可以情况进行调整，应跟下面的1024应保持一致
int numBytesRead=0;
line.start();
while (thread != null) {
numBytesRead = line.read(data, 0,1024);//取数据（1024）的大小直接关系到传输的速度 ， 一般越小越快，
try {
captrueOutputStream.write(data, 0, numBytesRead);//写入网络流

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