优化

liusuyi

2025-11-24 c66e0c72eecc82fabe423c00a15b34dbb9228764

优化

 ard-work/src/main/java/com/ard/work/service/impl/ArdFlightTaskServiceServiceImpl.java

@@ -415,70 +415,6 @@
    }

    // 生成视频缩略图
    public ByteArrayInputStream generateThumbnail1(String videoFile, int skipFrames, int targetWidth) {
//        long start = System.currentTimeMillis();
//        FFmpegFrameGrabber grabber = null;
//
//        try {
//            grabber = new FFmpegFrameGrabber(videoFile);
//            grabber.start();
//
//            int totalFrames = grabber.getLengthInFrames();
//            System.out.println("视频总帧数: " + totalFrames);
//            System.out.println("视频时长: " + grabber.getLengthInTime() / 1000000 + "秒");
//
//            Frame frame = null;
//            int currentFrame = 0;
//
//            // 读取指定帧数后的第一帧有效图像
//            while (currentFrame < totalFrames) {
//                frame = grabber.grabImage();
//                if (frame == null) {
//                    break;
//                }
//
//                if (currentFrame > skipFrames && frame.image != null) {
//                    break;
//                }
//                currentFrame++;
//            }
//
//            if (frame == null || frame.image == null) {
//                throw new Exception("无法获取有效视频帧");
//            }
//
//            // 转换 Frame 为 BufferedImage
//            Java2DFrameConverter converter = new Java2DFrameConverter();
//            BufferedImage image = converter.getBufferedImage(frame);
//
//            // 按目标宽度等比缩放
//            int targetHeight = (int) ((double) targetWidth / image.getWidth() * image.getHeight());
//            BufferedImage scaledImage = new BufferedImage(targetWidth, targetHeight, BufferedImage.TYPE_3BYTE_BGR);
//            scaledImage.getGraphics().drawImage(image, 0, 0, targetWidth, targetHeight, null);
//
//            // 转成 ByteArrayInputStream
//            ByteArrayOutputStream baos = new ByteArrayOutputStream();
//            ImageIO.write(scaledImage, "jpg", baos);
//            long cost = System.currentTimeMillis() - start;
//            System.out.println("处理耗时: " + cost + "ms");
//
//            return new ByteArrayInputStream(baos.toByteArray());
//
//        } catch (Exception e) {
//            throw new RuntimeException(e);
//        } finally {
//            if (grabber != null) {
//                try {
//                    grabber.stop();
//                    grabber.close();
//                } catch (Exception e) {
//                    e.printStackTrace();
//                }
//            }
//        }
        return null;
    }

    public ByteArrayInputStream generateThumbnail(
            String videoFile,
            int skipSeconds,
@@ -492,6 +428,12 @@
        try {
            List<String> command = new ArrayList<>();
            command.add(ffmpegPath);

            command.add("-timeout");
            command.add("3000000");
            command.add("-rw_timeout");
            command.add("3000000");

            command.add("-ss");
            command.add(String.format("00:00:%02d", skipSeconds));
            command.add("-i");