目标：微信录音amr格式转换成阿里能语音识别的wav格式文件
原理：使用ffmpeg工具对音视频格式进行转换
引入pom依赖
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| <!-- jave核心包 -->
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-core</artifactId>
<version>2.4.6</version>
</dependency>
<!-- window64位 ffmpeg -->
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-native-win64</artifactId>
<version>2.4.6</version>
</dependency>
<!-- linux64位 ffmpeg -->
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-native-linux64</artifactId>
<version>2.4.6</version>
</dependency>
|
代码示例
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| File source = new File("D:\\1.amr"); //源文件
File target = new File("D:\\1.wav"); //目标文件
AudioAttributes audio = new AudioAttributes();
//设置解码格式，比特率，位数，声道等信息
audio.setCodec("pcm_s16le");
audio.setSamplingRate(new Integer(16000));
audio.setChannels(new Integer(1));
EncodingAttributes attrs = new EncodingAttributes();
attrs.setFormat("wav");
attrs.setAudioAttributes(audio);
Encoder encoder = new Encoder();
try {
MultimediaObject multimediaObject = new MultimediaObject(source);
encoder.encode(multimediaObject, target, attrs);
} catch (IllegalArgumentException | EncoderException e) {
e.printStackTrace();
}
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使用命令直接转换
ffmpeg-amd64.exe -i 1.amr -acodec pcm_s16le -ac 1 -ar 16000 1.wav
