从Android手机发送的视频中捕获帧或图像
Jcodec(<artifactId>jcodec</artifactId>
和<artifactId>jcodec-javase</artifactId>
Version 0.2.2
)用于捕获java中的图像。一切都很好,但显示照片时倾斜到90度。我无法在捕捉帧或显示帧时发现旋转正在发生!
在本地服务器(tomcat7)工作正常(图像在potrait本身)但是当我将代码推送到AWS时它出现了这个问题,它有tomcat8。 AND下载后,AWS的图像大小(JPEG)为28kb,本地服务器的大小为118kb。
我在这里分享我的代码任何人请告诉我哪里出错了,解决这个问题的任何链接都会很棒。
帧捕获代码:
int frameNumber = 1;
Picture picture = FrameGrab.getFrameFromFile(file, frameNumber);
BufferedImage bufferedImage = AWTUtil.toBufferedImage(picture);
ImageIO.write(bufferedImage, "jpg", new File(id + File.separator + fileName + "_" + fileName + ".jpg"));
图片显示代码:
public ResponseEntity<Resource> getPhoto(@PathVariable(value = "id") Integer id) {
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.IMAGE_JPEG);
String absolutePath = new File(".").getAbsolutePath();
File file = new File(Paths.get(absolutePath).getParent() + "/" + id);
if (null != file) {
FilenameFilter beginswithm = new FilenameFilter() {
public boolean accept(File directory, String filename) {
return filename.startsWith("photo");
}
};
File[] files = file.listFiles(beginswithm);
if (null != files && files.length > 0) {
Resource resource = null;
for (final File f : files) {
headers.set("Content-Disposition", "inline; filename=" + f.getName());
resource = appContext.getResource("file:"
+ Paths.get(absolutePath).getParent() + "/" + id + "/" + f.getName());
return new ResponseEntity<>(resource, headers, HttpStatus.OK);
}
}
}
RecruiterResponseBean resBean = new RecruiterResponseBean();
resBean.setStatusMessage(Constants.FAILED);
resBean.setStatusCode(Constants.FAILED_CODE);
return new ResponseEntity(resBean, HttpStatus.NOT_FOUND);
}
答案 0 :(得分:0)
在android中,您可以使用ExifInterface查看图像/视频是否有旋转。
ExifInterface exifInterface = new ExifInterface(mFile.getPath());
int orientation = exifInterface.getAttributeInt(TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
Matrix matrix = new Matrix();
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
matrix.postRotate(90);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
matrix.postRotate(180);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
matrix.postRotate(270);
break;
default:
break;
}