带有 FFmpeg 和 JavaFx 的 JavaCV 视频播放器

问题描述

我想使用 Java CV 创建一个媒体播放器，但我无法调整帧速率 正因为如此，有些视频播放速度快，有些播放慢

是否可以通过一个FFmpegFrameGrraber对象读取一个视频的信息并将其设置在另一个对象中来解决问题？ 当然，我这样做并没有得到答案，但如果有其他方法，请帮助

playThread = new Thread(new Runnable() {
            public void run() {
                try {
                    final String videoFilename = "E:\\Java\\s1\\3.mp4";
                    final String videoFilename2 = "E:AudioVideo.mp4";
                    final String videoFilename3 = "E:\\1.mp4";
                    final String videoFilename4 = "E:\\Java\\s1\\3.mp4";


                     FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(videoFilename);



                    grabber.start();

                    grabber.setFrameRate(30.00);


                    primaryStage.setWidth(grabber.getimageWidth());
                    primaryStage.setHeight(grabber.getimageHeight());

                    final AudioFormat audioFormat = new AudioFormat(grabber.getSampleRate(),16,grabber.getAudioChannels(),true,true);

                    final DataLine.Info info = new DataLine.Info(SourceDataLine.class,audioFormat);
                    final SourceDataLine soundLine = (SourceDataLine) AudioSystem.getLine(info);
                    soundLine.open(audioFormat);
                    soundLine.start();

                    JavaFXFrameConverter converter = new JavaFXFrameConverter();

                    ExecutorService executor = Executors.newSingleThreadExecutor();

                    while (!Thread.interrupted()) {
                        Frame frame = grabber.grab();
                        if (frame == null) {
                            break;
                        }
                        if (frame.image != null) {
                            final Image image = converter.convert(frame);//
                            Platform.runLater(() -> {
                                
                                imageView.setimage(image);

                            });
                        }
                         else if (frame.samples != null) {
                            final ShortBuffer channelSamplesShortBuffer = (ShortBuffer) frame.samples[0];
                            channelSamplesShortBuffer.rewind();

                            final ByteBuffer outBuffer = ByteBuffer.allocate(channelSamplesShortBuffer.capacity() * 2);

                            for (int i = 0; i < channelSamplesShortBuffer.capacity(); i++) {
                                short val = channelSamplesShortBuffer.get(i);
                                outBuffer.putShort(val);
                            }

                            try {



                                executor.execute(() -> {
                                    soundLine.write(outBuffer.array(),outBuffer.capacity());
                                    outBuffer.clear();
                                });
                            } catch (Exception interruptedException) {
                                Thread.currentThread().interrupt();
                            }
                        }

                    }
                    executor.shutdownNow();
                    executor.awaitTermination(10,TimeUnit.SECONDS);

                    soundLine.stop();
                    grabber.stop();
                    grabber.release();
                    Platform.exit();
                } catch (Exception exception) {
                    LOG.log(Level.SEVERE,null,exception);
                    System.exit(1);
                }
            }
        });
        playThread.start();
    }

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

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