图片和视频压缩例子

/**
     * 视频压缩 需要jave jar 包。到网上下载即可  
     * 
     * @param source 需要压缩的视频
     * @param targetPath 压缩的目标路径
     * @return
     */
    public static boolean compressVideo(File source, String targetPath) {
        System.out.println("source:" + source);
        System.out.println("targetPath:" + targetPath);
        try {
            // 编码器
            Encoder encoder = new Encoder();
            // 源视频的信息
            MultimediaInfo mInfo = encoder.getInfo(source);
            AudioInfo audioInfo = mInfo.getAudio();
            VideoInfo videoInfo = mInfo.getVideo();
            // 音频参数设置(一些参数都是使用源视频)
            AudioAttributes audio = new AudioAttributes();
            audio.setBitRate(44100);
            audio.setChannels(audioInfo.getChannels());
            audio.setSamplingRate(audioInfo.getSamplingRate());
            audio.setCodec("libmp3lame");
            audio.setVolume(256);// 256表示原声，小于表示减少音量 大于表示增加音量

            // 视频参数设置(一些参数都是使用源视频)
            VideoAttributes video = new VideoAttributes();
            video.setCodec("mpeg4");
            video.setBitRate(videoInfo.getBitRate());
//            VideoSize size = new VideoSize(720, 960);
//            video.setSize(size);
            video.setFrameRate(30);

            // 视频转码编码设置
            EncodingAttributes attrs = new EncodingAttributes();
            attrs.setFormat("mp4");
            attrs.setAudioAttributes(audio);
            attrs.setVideoAttributes(video);
            System.out.println("audioInfo:" + audioInfo);
            System.out.println("videoInfo:" + videoInfo);
            System.out.println("mInfo" + mInfo);
            File target = new File(targetPath);
            String decoderstr = videoInfo.getDecoder();
            System.out.println("decoderstr:" + decoderstr);
            String[] decoder = encoder.getSupportedDecodingFormats();
            List<String> list = new ArrayList<String>();
            for (int i = 0; i < decoder.length; i++) {
                list.add(decoder[i]);
            }
            // 如果视频解码方式存在就编码。不然就不用
            // 。。查看解码格式类型：http://www.sauronsoftware.it/projects/jave/manual.php#3.1
            if (list.contains(decoderstr)) {
                encoder.encode(source, target, attrs);
                logger.info("压缩完成...");
            } else {
                logger.info("不支持该编码的视频，编码为：{};提示：压缩失败", decoderstr);
            }
        } catch (EncoderException e) {
            logger.info("视频压缩出现异常");
            e.printStackTrace();
        }
        return false;
    }

    /**
     * 图片压缩
     * 
     * @param source
     * @param target
     */
    public static void compressPicture(File source, String targetPath) {
        try {
            System.out.println("文件：" + source + "临时文件路径：" + targetPath);
            System.out.println("begin compress picture。。。。");
            FileOutputStream fos = new FileOutputStream(targetPath);
            BufferedImage bi = ImageIO.read(source);
            int srcWidth = bi.getWidth();
            int srcHeight = bi.getHeight();
            Image image = bi.getScaledInstance(srcWidth, srcHeight, Image.SCALE_SMOOTH);
            BufferedImage tag = new BufferedImage(srcWidth, srcHeight, BufferedImage.TYPE_INT_RGB);
            Graphics g = tag.getGraphics();
            g.setColor(Color.RED);
            g.drawImage(image, 0, 0, null);
            g.dispose();
            ImageIO.write(tag, "jpg", fos);
            System.out.println("end compress picture。。。。");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}