APP端录制的音频不是mp3,在audio标签无法播放,直接转为mp3就可以咯
package com.video.util;
import org.bytedeco.javacpp.avcodec;
import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.Frame;
import org.bytedeco.javacv.FrameGrabber;
import org.bytedeco.javacv.FrameRecorder;
import org.bytedeco.javacv.FrameRecorder.Exception;
/**
* 音频参数转换(包含采样率、编码,位数,通道数)
*
*/
public class AudioConvert {
/**
* 通用音频格式参数转换
*
* @param inputFile
* -导入音频文件
* @param outputFile
* -导出音频文件
* @param audioCodec
* -音频编码
* @param sampleRate
* -音频采样率
* @param audioBitrate
* -音频比特率
*/
public static void convert(String inputFile, String outputFile, int audioCodec, int sampleRate, int audioBitrate,
int audioChannels) {
Frame audioSamples = null;
// 音频录制(输出地址,音频通道)
FFmpegFrameRecorder recorder = null;
//抓取器
FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputFile);
// 开启抓取器
if (start(grabber)) {
recorder = new FFmpegFrameRecorder(outputFile, audioChannels);
recorder.setAudioOption("crf", "0");
recorder.setAudioCodec(audioCodec);
recorder.setAudioBitrate(audioBitrate);
recorder.setAudioChannels(audioChannels);
recorder.setSampleRate(sampleRate);
recorder.setAudioQuality(0);
recorder.setAudioOption("aq", "10");
// 开启录制器
if (start(recorder)) {
try {
// 抓取音频
while ((audioSamples = grabber.grab()) != null) {
recorder.setTimestamp(grabber.getTimestamp());
recorder.record(audioSamples);
}
} catch (org.bytedeco.javacv.FrameGrabber.Exception e1) {
System.err.println("抓取失败");
} catch (Exception e) {
System.err.println("录制失败");
}
stop(grabber);
stop(recorder);
}
}
}
public static boolean start(FrameGrabber grabber) {
try {
grabber.start();
return true;
} catch (org.bytedeco.javacv.FrameGrabber.Exception e2) {
try {
System.err.println("首次打开抓取器失败,准备重启抓取器...");
grabber.restart();
return true;
} catch (org.bytedeco.javacv.FrameGrabber.Exception e) {
try {
System.err.println("重启抓取器失败,正在关闭抓取器...");
grabber.stop();
} catch (org.bytedeco.javacv.FrameGrabber.Exception e1) {
System.err.println("停止抓取器失败!");
}
}
}
return false;
}
public static boolean start(FrameRecorder recorder) {
try {
recorder.start();
return true;
} catch (Exception e2) {
try {
System.err.println("首次打开录制器失败!准备重启录制器...");
recorder.stop();
recorder.start();
return true;
} catch (Exception e) {
try {
System.err.println("重启录制器失败!正在停止录制器...");
recorder.stop();
} catch (Exception e1) {
System.err.println("关闭录制器失败!");
}
}
}
return false;
}
public static boolean stop(FrameGrabber grabber) {
try {
grabber.flush();
grabber.stop();
return true;
} catch (org.bytedeco.javacv.FrameGrabber.Exception e) {
return false;
} finally {
try {
grabber.stop();
} catch (org.bytedeco.javacv.FrameGrabber.Exception e) {
System.err.println("关闭抓取器失败");
}
}
}
public static boolean stop(FrameRecorder recorder) {
try {
recorder.stop();
recorder.release();
return true;
} catch (Exception e) {
return false;
} finally {
try {
recorder.stop();
} catch (Exception e) {
}
}
}
}
首先得引入依赖了
<dependency> <groupId>org.bytedeco</groupId> <artifactId>javacv</artifactId> <version>1.4.1</version> </dependency> <dependency> <groupId>org.bytedeco</groupId> <artifactId>javacpp</artifactId> <version>1.4.1</version> </dependency> <dependency> <groupId>org.bytedeco.javacpp-presets</groupId> <artifactId>opencv-platform</artifactId> <version>3.4.1-1.4.1</version> </dependency> <dependency> <groupId>org.bytedeco.javacpp-presets</groupId> <artifactId>ffmpeg-platform</artifactId> <version>3.4.2-1.4.1</version> </dependency>