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• JAVA Spring : Grabbing Image from a multipartFile video via FFMPEG JavaCV

  29 août 2023, par Thanh Hiếu Nguyễn

  I'm trying to achieve Grabbing a frame from a MultipartFile or URL and here's my attempt.

  


  URL :

  


  InputStream inputStream = new java.net.URL(video.getUrl()).openStream();

FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputStream);
grabber.start();

int frameRate = (int) grabber.getFrameRate();
int targetFrameNumber = (int) (frameRate * timeLengthSeconds);

grabber.setFrameNumber(targetFrameNumber);
Frame frame = grabber.grab();

grabber.stop();

if (frame != null) {
    Java2DFrameConverter converter = new Java2DFrameConverter();
    BufferedImage bufferedImage = converter.getBufferedImage(frame);
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    ImageIO.write(bufferedImage, "jpeg", byteArrayOutputStream);
    byte[] bytes = byteArrayOutputStream.toByteArray();


  


  MultipartFile :

  


  byte[] videoBytes = video.getBytes();

FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(new ByteArrayInputStream(videoBytes));
int frameRate = (int) 30;
int targetFrameNumber = (int) (frameRate * timeLengthSeconds);

grabber.setFrameNumber(targetFrameNumber);
grabber.setVideoStream(10);
grabber.start();


Frame frame = grabber.grab();

grabber.stop();

if (frame != null) {
    Java2DFrameConverter converter = new Java2DFrameConverter();
    BufferedImage bufferedImage = converter.getBufferedImage(frame);
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    ImageIO.write(bufferedImage, "jpeg", byteArrayOutputStream);
    byte[] bytes = byteArrayOutputStream.toByteArray();


  


  Both of them generates an AUDIO type of Frame, so later I can't buffer an image out of it, tried different videos, frameRate, frameNumber, same result.

  


  UPDATE :
  
So I manage to get the frame with following code

  


  byte[] videoBytes = video.getBytes();
FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(new ByteArrayInputStream(videoBytes));
grabber.setFormat("mp4");
int frameRate = (int) grabber.getFrameRate();
int targetFrameNumber = (int) (frameRate * timeLengthSeconds);

grabber.setFrameNumber(targetFrameNumber);
grabber.setVideoStream(0);
grabber.start();


Frame frame = grabber.grabImage();

grabber.stop();


  


  But another problem occurred

  


  A fatal error has been detected by the Java Runtime Environment:

EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000001dd6cac79d6, pid=20824, tid=21048 
 JRE version: Java(TM) SE Runtime Environment 18.9 (11.0.12+8) (build 11.0.12+8-LTS-237)
 Java VM: Java HotSpot(TM) 64-Bit Server VM 18.9 (11.0.12+8-LTS-237, mixed mode, tiered, compressed oops, g1 gc, windows-amd64)
 Problematic frame:
 J 657 c1 jdk.internal.misc.Unsafe.getByte(J)B java.base@11.0.12 (7 bytes) @ 0x000001dd6cac79d6 [0x000001dd6cac79a0+0x0000000000000036]


  


  Any help is appreciated !

  


• Can't convert MP4 to MP3 using FFmpeg in Java

  28 janvier 2015, par Yamaguchi Kose

  I want to extract an audio file(.mp3) from a video file(.3gp) in Android.

  Now I’m trying to use ffmpeg in java file, but only to get an broken mp3 file.
  It only produces a short noise.
  How can it change to an audio format ?

  Here is the code I tried.

  public void convertToMp3 (String audioFilePath, String soundTitle){
  
  
  
      try {
  
          //TODO: Grabber
  
          FrameGrabber grabber = new FFmpegFrameGrabber( audioFilePath ); // 3gpfile
  
          grabber.setFormat("mp3");
  
          grabber.setSampleFormat(6);
  
          grabber.setSampleRate(44100);
  
          grabber.setFrameRate(30.0);
  
          grabber.setAudioBitrate(192000);
  
          grabber.setAudioChannels(2);
  
          grabber.start();
  
  
  
  
  
          //TODO: Recorder
  
          String stragePath = Environment.getExternalStorageDirectory().getAbsolutePath();
  
          FrameRecorder recorder = new FFmpegFrameRecorder(stragePath + "/Music/"+soundTitle+".mp3",grabber.getAudioChannels());
  
          recorder.setSampleFormat(grabber.getSampleFormat());
  
          recorder.setSampleRate(44100);
  
          recorder.setSampleFormat(6);
  
          recorder.setAudioBitrate(128000);
  
          recorder.setAudioChannels(2);
  
          recorder.setFormat("mp3");
  
          recorder.setFrameRate(30.0);
  
          recorder.setAudioCodec(avcodec.AV_CODEC_ID_MP3);
  
          recorder.start();
  
  
  
  
  
          Frame frame;
  
          while ((frame = grabber.grabFrame()) != null) {
  
              recorder.record(frame);
  
          }
  
          recorder.stop();
  
          grabber.stop();
  
  
  
      } catch (FrameGrabber.Exception e) {
  
          e.printStackTrace();
  
      } catch (FrameRecorder.Exception e) {
  
          e.printStackTrace();
  
      }
  
  }

  I used these libraries.
  Build.Grade(app)

  dependencies {
  
      compile group: 'org.bytedeco', name: 'javacv', version: '0.10'
  
      compile group: 'org.bytedeco', name: 'javacpp', version: '0.10'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.9-0.9', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.3-0.9', classifier: 'android-arm'
  
  }

  Do you have any idea ? Any advice will be appreciated.

• Can't convert MP4 to MP3 with FFmpeg in Java

  28 janvier 2015, par Yamaguchi Kose

  I want to extract an audio file(.mp3) from a video file(.3gp) in Android.

  Now I’m trying to use ffmpeg in java file, but only to get an broken mp3 file.
  It only produces a short noise.
  How can it change to an audio format ?

  Here is the code I tried.

  public void convertToMp3 (String audioFilePath, String soundTitle){
  
  
  
      try {
  
          //TODO: Grabber
  
          FrameGrabber grabber = new FFmpegFrameGrabber( audioFilePath ); // 3gpfile
  
          grabber.setFormat("mp3");
  
          grabber.setSampleFormat(6);
  
          grabber.setSampleRate(44100);
  
          grabber.setFrameRate(30.0);
  
          grabber.setAudioBitrate(192000);
  
          grabber.setAudioChannels(2);
  
          grabber.start();
  
  
  
  
  
          //TODO: Recorder
  
          String stragePath = Environment.getExternalStorageDirectory().getAbsolutePath();
  
          FrameRecorder recorder = new FFmpegFrameRecorder(stragePath + "/Music/"+soundTitle+".mp3",grabber.getAudioChannels());
  
          recorder.setSampleFormat(grabber.getSampleFormat());
  
          recorder.setSampleRate(44100);
  
          recorder.setSampleFormat(6);
  
          recorder.setAudioBitrate(128000);
  
          recorder.setAudioChannels(2);
  
          recorder.setFormat("mp3");
  
          recorder.setFrameRate(30.0);
  
          recorder.setAudioCodec(avcodec.AV_CODEC_ID_MP3);
  
          recorder.start();
  
  
  
  
  
          Frame frame;
  
          while ((frame = grabber.grabFrame()) != null) {
  
              recorder.record(frame);
  
          }
  
          recorder.stop();
  
          grabber.stop();
  
  
  
      } catch (FrameGrabber.Exception e) {
  
          e.printStackTrace();
  
      } catch (FrameRecorder.Exception e) {
  
          e.printStackTrace();
  
      }
  
  }

  I used these libraries.
  Build.Grade(app)

  dependencies {
  
      compile group: 'org.bytedeco', name: 'javacv', version: '0.10'
  
      compile group: 'org.bytedeco', name: 'javacpp', version: '0.10'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.9-0.9', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.3-0.9', classifier: 'android-arm'
  
  }

  Do you have any idea ? Any advice will be appreciated.