用javacv將.avi格式的視頻中的音頻提取并保存成.mp3格式

pom中添加依賴

<dependencies><dependency><groupId>org.bytedeco</groupId><artifactId>javacv</artifactId><version>1.5</version></dependency><dependency><groupId>org.bytedeco</groupId><artifactId>javacv-platform</artifactId><version>1.5</version></dependency><dependency><groupId>org.bytedeco</groupId><artifactId>javacpp</artifactId><version>1.5</version></dependency><dependency><groupId>org.bytedeco.javacpp-presets</groupId><artifactId>opencv-platform</artifactId><version>4.0.1-1.4.4</version></dependency><dependency><groupId>org.bytedeco.javacpp-presets</groupId><artifactId>ffmpeg-platform</artifactId><version>4.1-1.4.4</version></dependency></dependencies>

代碼：

package main;/*** @program: New_javacv* @description:* @author: Mr.Wang* @create: 2021-04-08 21:56**/import org.bytedeco.javacv.FFmpegFrameGrabber; import org.bytedeco.javacv.FFmpegFrameRecorder; import org.bytedeco.javacv.FrameGrabber; import org.bytedeco.javacv.FrameRecorder; 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;/*** 音頻參數轉換（包含采樣率、編碼，位數，通道數）** @author eguid**/public class AudioConvert {/*** 通用音頻格式參數轉換** @param inputFile* -導入音頻文件* @param outputFile* -導出音頻文件* @param audioCodec* -音頻編碼* @param sampleRate* -音頻采樣率* @param audioBitrate* -音頻比特率*/public static void convert(String inputFile, String outputFile, int audioCodec, int sampleRate, int audioBitrate,int audioChannels) {Frame audioSamples = null;// 音頻錄制（輸出地址，音頻通道）FFmpegFrameRecorder recorder = null;//抓取器FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputFile);// 開啟抓取器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");// 開啟錄制器if (start(recorder)) {try {// 抓取音頻while ((audioSamples = grabber.grabSamples()) != null) {recorder.setTimestamp(grabber.getTimestamp());recorder.record(audioSamples);}} catch (org.bytedeco.javacv.FrameGrabber.Exception e1) {System.err.println("抓取失敗");} catch (Exception e) {System.err.println("錄制失敗");}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("首次打開抓取器失敗，準備重啟抓取器...");grabber.restart();return true;} catch (org.bytedeco.javacv.FrameGrabber.Exception e) {try {System.err.println("重啟抓取器失敗，正在關閉抓取器...");grabber.stop();} catch (org.bytedeco.javacv.FrameGrabber.Exception e1) {System.err.println("停止抓取器失敗！");}}}return false;}public static boolean start(FrameRecorder recorder) {try {recorder.start();return true;} catch (Exception e2) {try {System.err.println("首次打開錄制器失敗！準備重啟錄制器...");recorder.stop();recorder.start();return true;} catch (Exception e) {try {System.err.println("重啟錄制器失敗！正在停止錄制器...");recorder.stop();} catch (Exception e1) {System.err.println("關閉錄制器失敗！");}}}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("關閉抓取器失敗");}}}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) {}}}// 測試public static void main(String[] args) {//pcm參數轉換convert("F:\\javacv_project\\color_cast.avi", "F:\\javacv_project\\color_cast1.mp3", avcodec.AV_CODEC_ID_MP3, 8000, 40,1);}}

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