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• Auto detect rotation and rotate video accordingly with java, ffmpeg

  16 octobre 2013, par Lakshmi Priya.K

  Can anyone please help me with this ?

  On converting videos to SWF, MOV files are rotated 90 degrees by default. I am using the JAVE Swf Converter and the JAVE Encoder.

  If I use :

  ffmpeg -i in.mov -vf "transpose=1" out.mov

  All mov files are getting rotated, but what I need is to automatically detect just the rotated videos and change orientation for just those videos. Please help.

  How can I automatically detect the rotation or orientation of the video during upload and rotate if needed, so that all "mov" files play in the correct orientation ?

  Thanks,
  Lakshmi Priya.K

• net.ypresto.qtfaststartjava not supporting in maven java

  9 mai 2018, par User

  I am using Qtfaststart to stream mp4 video(place MOOV atom to first) faster. I got maven repository from the link https://javalibs.com/artifact/net.ypresto.qtfaststartjava/qtfaststart .

  <dependency>
  
     <groupid>net.ypresto.qtfaststartjava</groupid>
  
     <artifactid>qtfaststart</artifactid>
  
     <version>0.1.0</version>
  
  </dependency>

  I am getting Missing artifact net.ypresto.qtfaststartjava:qtfaststart:jar:0.1.0 error in the pom.xml

  This dependency is not supporting, Can anyone help me how to solve this OR any other libraries to place MOOV atom like Qtfaststart.

• Grab frame from video (as Inputstream) using JavaCV in Java

  23 janvier 2020, par Praveen Gopal

  I am using JavaCV to grab frame from Video.

  I can grab if video is in absolute path. But if video is in HTTP than JavaCV throw error.

      url = new URL("http://www.sample-videos.com/video/mp4/720/SampleVideo.mp4");
  
      urlConnection = (HttpURLConnection) url.openConnection();
  
      InputStream inputStream = urlConnection.getInputStream();
  
      Java2DFrameConverter bimConverter = new Java2DFrameConverter();
  
  
  
      FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber(inputStream);
  
  
  
      String output = "C:\\Users\\xxxx\\Downloads\\Test";
  
      frameGrabber.start();
  
       Frame frame;  
  
       double frameRate=frameGrabber.getFrameRate();  
  
       int imgNum=5;  
  
       System.out.println("Video has "+frameGrabber.getFrameRate()+" frames and has frame rate of "+frameRate);  
  
       try {   
  
         frameGrabber.setFrameNumber(1000);
  
         frame = frameGrabber.grabKeyFrame();  
  
         BufferedImage bi = bimConverter.convert(frame);  
  
         String path = output+File.separator+imgNum+".jpg";  
  
         ImageIO.write(bi,"png", new File(path));
  
         frameGrabber.stop();   
  
         frameGrabber.close();
  
         frameGrabber.flush();                                                                        
  
       } catch (Exception e) {  
  
         e.printStackTrace();  
  
       } 

  Any help would be helpful.
  Thanks in advance.