ffmpeg.java

public void startExtracting() {

		try (FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber(videoPath)) {

			OpenCVFrameConverter.ToOrgOpenCvCoreMat converter = new OpenCVFrameConverter.ToOrgOpenCvCoreMat();

			frameGrabber.start();

			for (Integer index : indexList) {

				String frameName = filename + "_Frame" + String.format("%04d", index + 1) + "." + imageType;

				if (!stopExecution && FrameMixerCore.isFrameIncluded(framesRanges, index)) {

					if (replaceAll) {
						// skip check for replace all
					} else if (skipAll || !FramesProcessor.checkFileIfExistAndDecide(imagesPath + File.separator + frameName)) {
						FramesProcessor.extractedFrames++;
						continue;
					}

					frameGrabber.setVideoFrameNumber(index);

					Frame frame = frameGrabber.grabImage();

					BufferedImage bufferedImage = Mat2BufferedImage(converter.convert(frame));

					String rotation = frameGrabber.getVideoMetadata("rotate");

					if (rotation != null)
						bufferedImage = FrameMixerCore.rotateImageByDegrees(bufferedImage, Integer.parseInt(rotation));

					imagesNames.add(frameName);

					if (bufferedImage != null) {

						bufferedImage = SeedUtils.removeBackground(bufferedImage, seed);

						bufferedImage = FrameMixerCore.processSeedImage(bufferedImage, channelWidth, channelHeight, scaling, isCrop, alignX, alignY);

						if (imageType.equals("pdf")) {
							PDFUtils.writePDF(PDFUtils.convertBufferedImageToPdf(bufferedImage, channelWidth, channelHeight, true, videoPath), new File(imagesPath + File.separator + frameName));
						} else {
							ImageUtils.writeImage(bufferedImage, imageType, new File(imagesPath + File.separator + frameName), channelWidth, channelHeight, false, true, videoPath, null);
						}

						extractedFrames++;

					}
				}

			}

			frameGrabber.stop();

		} catch (Exception e) {

			logger.error(e.getMessage());
		}
	}