网站备案密码使用,域名分析网站,官网开发多少钱一个,外贸网站源码多语言相信我们都会或多或少需要给前端返回视频或者音频的一些信息#xff0c;那么今天这篇文章通过Java语言使用javacv来获取视频、音频、图片等元数据信息#xff08;分辨率、大小、帧等信息#xff09;
一、首先导入依赖
可以先导入javacv/javacv-platform依赖#xff0c;由…相信我们都会或多或少需要给前端返回视频或者音频的一些信息那么今天这篇文章通过Java语言使用javacv来获取视频、音频、图片等元数据信息分辨率、大小、帧等信息
一、首先导入依赖
可以先导入javacv/javacv-platform依赖由于依赖比较大所以我们可以先去除部分不需要的依赖如下
dependencygroupIdorg.bytedeco/groupIdartifactIdjavacv/artifactIdversion1.4.4/versionexclusionsexclusiongroupIdorg.bytedeco/groupIdartifactIdjavacpp/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdflycapture/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibdc1394/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibfreenect/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibfreenect2/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibrealsense/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdvideoinput/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdopencv/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdtesseract/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdleptonica/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdflandmark/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdartoolkitplus/artifactId/exclusion/exclusions/dependencydependencygroupIdorg.bytedeco/groupIdartifactIdjavacv-platform/artifactIdversion1.4.4/versionexclusionsexclusiongroupIdorg.bytedeco/groupIdartifactIdjavacv/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdflycapture-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibdc1394-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibfreenect-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibfreenect2-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdlibrealsense-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdvideoinput-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdopencv-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdtesseract-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdleptonica-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdflandmark-platform/artifactId/exclusionexclusiongroupIdorg.bytedeco.javacpp-presets/groupIdartifactIdartoolkitplus-platform/artifactId/exclusion/exclusions/dependency
二、获取视频、音频或图片实体元信息
FFmpegUtil实体
Slf4j
Service
public class FFmpegUtil {private static final String IMAGE_SUFFIX png;/*** 获取视频时长单位为秒S* param file 视频源* return*/SuppressWarnings(resource)public static long videoDuration(File file) {long duration 0L;FFmpegFrameGrabber ff new FFmpegFrameGrabber(file);try {ff.start();duration ff.getLengthInTime() / (1000 * 1000);ff.stop();} catch (java.lang.Exception e) {e.printStackTrace();}return duration;}/*** 获取视频帧图片* param file 视频源* param number 第几帧* param dir 文件存放根目录* param args 文件存放根目录* return*/SuppressWarnings(resource)public static String videoImage(File file, Integer number, String dir, String args) {String picPath StringUtils.EMPTY;FFmpegFrameGrabber ff new FFmpegFrameGrabber(file);try {ff.start();int i 0;int length ff.getLengthInFrames();Frame frame null;while (i length) {frame ff.grabFrame();//截取第几帧图片if ((i number) (frame.image ! null)) {//获取生成图片的路径picPath getImagePath(args);//执行截图并放入指定位置doExecuteFrame(frame, dir File.separator picPath);break;}i;}ff.stop();} catch (FrameGrabber.Exception e) {e.printStackTrace();}return picPath;}/*** 截取缩略图* param frame* param targerFilePath 图片存放路径*/public static void doExecuteFrame(Frame frame, String targerFilePath) {//截取的图片if (null frame || null frame.image) {return;}Java2DFrameConverter converter new Java2DFrameConverter();BufferedImage srcImage converter.getBufferedImage(frame);int srcImageWidth srcImage.getWidth();int srcImageHeight srcImage.getHeight();//对帧图片进行等比例缩放缩略图int width 480;int height (int) (((double) width / srcImageWidth) * srcImageHeight);BufferedImage thumbnailImage new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);thumbnailImage.getGraphics().drawImage(srcImage.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);File output new File(targerFilePath);try {ImageIO.write(thumbnailImage, IMAGE_SUFFIX, output);} catch (IOException e) {e.printStackTrace();}}/*** 生成图片的相对路径* param args 传入生成图片的名称、为空则用UUID命名* return 例如 upload/images.png*/public static String getImagePath(String args) {if (StringUtils.isNotEmpty(args)) {return args . IMAGE_SUFFIX;}return getUUID() . IMAGE_SUFFIX;}/*** 生成唯一的uuid* return uuid*/public static String getUUID(){return UUID.randomUUID().toString().replace(-,);}/*** 时长格式换算* param duration 时长* return HH:mm:ss*/public static String formatDuration(Long duration) {String formatTime StringUtils.EMPTY;double time Double.valueOf(duration);if (time -1) {int hour (int) Math.floor(time / 3600);int minute (int) (Math.floor(time / 60) % 60);int second (int) (time % 60);if (hour 10) {formatTime 0;}formatTime hour :;if (minute 10) {formatTime 0;}formatTime minute :;if (second 10) {formatTime 0;}formatTime second;}return formatTime;}/*** 获取图片大小Kb* param urlPath* return*/public static String getImageSize(String urlPath){// 得到数据byte[] imageFromURL getImageFromURL(urlPath);// 转换String byte2kb bytes2kb(imageFromURL.length);return byte2kb;}/*** 根据图片地址获取图片信息** param urlPath 网络图片地址* return*/public static byte[] getImageFromURL(String urlPath) {// 字节数组byte[] data null;// 输入流InputStream is null;// Http连接对象HttpURLConnection conn null;try {// Url对象URL url new URL(urlPath);// 打开连接conn (HttpURLConnection) url.openConnection();// 打开读取 写入是setDoOutput
// conn.setDoOutput(true);conn.setDoInput(true);// 设置请求方式conn.setRequestMethod(GET);// 设置超时时间conn.setConnectTimeout(6000);// 得到访问的数据流is conn.getInputStream();// 验证访问状态是否是200 正常if (conn.getResponseCode() 200) {data readInputStream(is);} else {data null;}} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {try {if (is ! null) {// 关闭流is.close();}} catch (IOException e) {e.printStackTrace();}// 关闭连接conn.disconnect();}return data;}/*** 将流转换为字节** param is* return*/public static byte[] readInputStream(InputStream is) {/*** 捕获内存缓冲区的数据转换成字节数组* ByteArrayOutputStream类是在创建它的实例时程序内部创建一个byte型别数组的缓冲区然后利用ByteArrayOutputStream和ByteArrayInputStream的实例向数组中写入或读出byte型数据。* 在网络传输中我们往往要传输很多变量我们可以利用ByteArrayOutputStream把所有的变量收集到一起然后一次性把数据发送出去。*/ByteArrayOutputStream baos new ByteArrayOutputStream();// 创建字节数组 1024 1Mbyte[] buffer new byte[1024];// 防止无限循环int length -1;try {// 循环写入数据到字节数组while ((length is.read(buffer)) ! -1) {baos.write(buffer, 0, length);}// 强制刷新扫尾工作主要是为了让数据流在管道的传输工程中全部传输过去防止丢失数据baos.flush();} catch (IOException e) {e.printStackTrace();}// 字节流转换字节数组byte[] data baos.toByteArray();try {// 关闭读取流is.close();// 关闭写入流baos.close();} catch (IOException e) {e.printStackTrace();}return data;}/*** 获取本地图片的字节数** param imgPath* return*/public static String pathSize(String imgPath) {File file new File(imgPath);FileInputStream fis;int fileLen 0;try {fis new FileInputStream(file);fileLen fis.available();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return bytes2kb(fileLen);}/*** 将获取到的字节数转换为KBMB模式** param bytes* return*/public static String bytes2kb(long bytes) {BigDecimal filesize new BigDecimal(bytes);
// BigDecimal megabyte new BigDecimal(1024 * 1024);
// float returnValue filesize.divide(megabyte, 2, BigDecimal.ROUND_UP).floatValue();
// if (returnValue 1)
// return (returnValue MB);
// BigDecimal kilobyte new BigDecimal(1024);
// returnValue filesize.divide(kilobyte, 2, BigDecimal.ROUND_UP).floatValue();
// return (returnValue KB);return filesize.toString();}public static String getImageFormat(String imagePath) throws IOException {// 字节数组byte[] data null;String format null;// 输入流InputStream is null;// Http连接对象HttpURLConnection conn null;ImageInputStream imageInputStream null;try {// Url对象URL url new URL(imagePath);// 打开连接conn (HttpURLConnection) url.openConnection();// 打开读取 写入是setDoOutput
// conn.setDoOutput(true);conn.setDoInput(true);// 设置请求方式conn.setRequestMethod(GET);// 设置超时时间conn.setConnectTimeout(6000);// 得到访问的数据流is conn.getInputStream();// 验证访问状态是否是200 正常if (conn.getResponseCode() 200) {imageInputStream ImageIO.createImageInputStream(is);ImageReader imageReader ImageIO.getImageReaders(imageInputStream).next();format imageReader.getFormatName();} else {format null;}} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {try {if (is ! null) {// 关闭流is.close();}if(imageInputStream ! null){imageInputStream.close();}} catch (IOException e) {e.printStackTrace();}// 关闭连接conn.disconnect();}return format;}/*** 将inputStream转化为file* param is* param file 要输出的文件目录*/public static void inputStream2File(InputStream is, File file) throws IOException {OutputStream os null;try {os new FileOutputStream(file);int len 0;byte[] buffer new byte[8192];while ((len is.read(buffer)) ! -1) {os.write(buffer, 0, len);}} finally {os.close();is.close();}}/*** 获取时长*/public static long getDuration(String filePath) throws Exception {FFmpegFrameGrabber ff FFmpegFrameGrabber.createDefault(filePath);ff.start();long duration ff.getLengthInTime() / (1000 * 1000);ff.stop();return duration;}/*** 获取视频详情* param file* return*/public static VideoInfoVO getVideoInfo(String file) {VideoInfoVO videoInfoVO new VideoInfoVO();FFmpegFrameGrabber grabber null;try {grabber FFmpegFrameGrabber.createDefault(file);// 启动 FFmpeggrabber.start();// 读取视频帧数videoInfoVO.setLengthInFrames(grabber.getLengthInVideoFrames());// 读取视频帧率videoInfoVO.setFrameRate(grabber.getVideoFrameRate());// 读取视频秒数videoInfoVO.setDuration(grabber.getLengthInTime() / 1000000.00);// 读取视频宽度videoInfoVO.setWidth(grabber.getImageWidth());// 读取视频高度videoInfoVO.setHeight(grabber.getImageHeight());videoInfoVO.setAudioChannel(grabber.getAudioChannels());videoInfoVO.setVideoCode(grabber.getVideoCodecName());videoInfoVO.setAudioCode(grabber.getAudioCodecName());// String md5 MD5Util.getMD5ByInputStream(new FileInputStream(file));videoInfoVO.setSampleRate(grabber.getSampleRate());return videoInfoVO;} catch (Exception e) {e.printStackTrace();return null;} finally {try {if (grabber ! null) {// 此处代码非常重要如果没有可能造成 FFmpeg 无法关闭grabber.stop();grabber.release();}} catch (FFmpegFrameGrabber.Exception e) {log.error(getVideoInfo grabber.release failed 获取文件信息失败{}, e.getMessage());}}}}
VideoInfoVO实体 Getter
Setter
public class VideoInfoVO {/*** 总帧数**/private int lengthInFrames;/*** 帧率**/private double frameRate;/*** 时长**/private double duration;/*** 视频编码*/private String videoCode;/*** 音频编码*/private String audioCode;private int width;private int height;private int audioChannel;private String md5;/*** 音频采样率*/private Integer sampleRate;private Double fileSize;public String toJson() {try {ObjectMapper objectMapper new ObjectMapper();return objectMapper.writeValueAsString(this);} catch (Exception e) {return ;}}
}InputStream转FileInputStream /*** inputStream转FileInputStream* param inputStream* return* throws IOException*/public static FileInputStream convertToFileInputStream(InputStream inputStream) throws IOException {File tempFile File.createTempFile(temp, .tmp);tempFile.deleteOnExit();try (FileOutputStream outputStream new FileOutputStream(tempFile)) {byte[] buffer new byte[1024];int bytesRead;while ((bytesRead inputStream.read(buffer)) ! -1) {outputStream.write(buffer, 0, bytesRead);}}return new FileInputStream(tempFile);}
获取文件大小
/*** 获取文件大小* param inputStream* return*/public String getFileSize(InputStream inputStream){FileChannel fc null;String size 0;try {FileInputStream fis convertToFileInputStream(inputStream);fc fis.getChannel();BigDecimal fileSize new BigDecimal(fc.size());size String.valueOf(fileSize);} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {if (null ! fc) {try {fc.close();} catch (IOException e) {e.printStackTrace();}}}return size;}
截取视频帧封面
/*** 截取视频获得指定帧的图片** param video 源视频文件* param picPath 截图存放路径*/public String getVideoPic(InputStream video, String picPath) {FFmpegFrameGrabber ff new FFmpegFrameGrabber(video);try {ff.start();// 截取中间帧图片(具体依实际情况而定)int i 0;int length ff.getLengthInFrames();
// int middleFrame length / 2;int middleFrame 5;Frame frame null;while (i length) {frame ff.grabFrame();if ((i middleFrame) (frame.image ! null)) {break;}i;}// 截取的帧图片Java2DFrameConverter converter new Java2DFrameConverter();BufferedImage srcImage converter.getBufferedImage(frame);int srcImageWidth srcImage.getWidth();int srcImageHeight srcImage.getHeight();// 对截图进行等比例缩放(缩略图)int width 480;int height (int) (((double) width / srcImageWidth) * srcImageHeight);BufferedImage thumbnailImage new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);thumbnailImage.getGraphics().drawImage(srcImage.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);InputStream inputStream bufferedImageToInputStream(thumbnailImage);
// File picFile new File(picPath);
// ImageIO.write(thumbnailImage, jpg, picFile);
// int available inputStream.available();String imgUrl ossUtils.putThumbInputStream(inputStream, picPath);ff.stop();return imgUrl;} catch (java.lang.Exception e) {e.printStackTrace();System.out.println(e);return null;}}
