Recherche avancée
Médias (91)
-
Corona Radiata
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Lights in the Sky
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Head Down
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Echoplex
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Discipline
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Letting You
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (20)
-
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...)
Sur d’autres sites (6029)
-
avcodec/cbs : ensure user_data is padded for GBC parsing
5 octobre 2018, par Aman Guptaavcodec/cbs : ensure user_data is padded for GBC parsing
Fixes crash noticed in the cbs_userdata patchset.
====ERROR : AddressSanitizer : heap-buffer-overflow on address 0x609000026c89 at pc 0x00010725d37b bp 0x7ffeea04e750 sp 0x7ffeea04e748
READ of size 4 at 0x609000026c89 thread T0
#0 0x10725d37a in ff_cbs_read_unsigned get_bits.h:274
#1 0x1072d2767 in ff_cbs_read_a53_user_data cbs_misc_syntax_template.c:119
#2 0x1078251a7 in h264_metadata_filter h264_metadata_bsf.c:595
#3 0x105c1321d in output_packet ffmpeg.c:8530x609000026c89 is located 1 bytes to the right of 8-byte region [0x609000026c80,0x609000026c88)
allocated by thread T0 here :
#0 0x10aef08d7 in wrap_posix_memalign (libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x578d7)
#1 0x10aca95e6 in av_malloc mem.c:87
#2 0x10ac545fe in av_buffer_allocz buffer.c:72
#3 0x107263b27 in cbs_h264_read_nal_unit cbs_h264_syntax_template.c:722
#4 0x10725b688 in cbs_read_fragment_content cbs.c:155Signed-off-by : Aman Gupta <aman@tmm1.net>
-
Audio offset get wrong after some time when streaming audios
7 septembre 2024, par Antoine GrenardI use microsoft-cognitiveservices-speech-sdk (1.38.0) in order to do real time speech to text.
It seems like the offset is right when I send a full audio but it is wrong when I send it cut in a lot of audio chunks.


The more there is audio chunks the more inaccurate the offset is :


- 

- No chunks : 1 726 300 000
- 369 chunks of 0.5 seconds : 1 729 600 000
- 923 chunks of 0.2 seconds : 1 744 600 000
- 1443 chunks of 0.1 seconds : 1 757 900 000










To reproduce here is some piece of code :


const speechConfig = SpeechConfig.fromSubscription(<key>, {console.log(event)}
 speechRecognizer.canceled = async (recognizer, event) => {console.log(event)}
 speechRecognizer.startContinuousRecognitionAsync();

 for (let i = 1; i <= 1443; i++) {
 const formattedNumber = i.toString().padStart(4, '0');
 const buffer = fs.readFileSync(`/var/tmp/chunks/output_${formattedNumber}.wav`);
 pushStream.write(buffer);
 }
</key>

To create the audio chunks :


ffmpeg -i -f segment -segment_time 0.1 -c copy output_%04d.wav


Here is the audio link : https://drive.google.com/file/d/1H_RJuqMiBaVkpo9XHrgp1bpuFdgQl64O/view?usp=sharing


Thanks for your help


-
I am using ffmpeg java library to convert captured screenshots to video. Video output is blurry
2 octobre 2020, par dark princeI am using ffmpeg java library to convert captured screenshots to video. Video which is generated as output is blurry.


I am using bit rate as 9000, frames per sec as 25 and video size as that of desktop screen size.


Any suggestions on how to solve this issue.


P.S. I cannot use ffmpeg.exe and command line due to certain restrictions and hence I am opting for ffmpeg java library.


Any suggestions on the issue or suggestions on any better approach will be helpful.


import java.awt.AWTException;
 import java.awt.Dimension;
 import java.awt.FlowLayout;
 import java.awt.Rectangle;
 import java.awt.Robot;
 import java.awt.Toolkit;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.IOException;
 import java.util.Date;
 
 import javax.imageio.ImageIO;
 import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JOptionPane;
 
 import org.bytedeco.javacpp.avcodec;
 import org.bytedeco.javacv.FFmpegFrameRecorder;
 import org.bytedeco.javacv.OpenCVFrameConverter;
 
 public class ScreenRecorder{
 
 public static boolean videoComplete=false;
 public static String inputImageDir="inputImgFolder"+File.separator;
 public static String inputImgExt="png";
 public static String outputVideo="recording.mp4"; 
 public static int counter=0;
 public static int imgProcessed=0;
 public static FFmpegFrameRecorder recorder=null;
 public static int videoWidth=1920;
 public static int videoHeight=1080;
 public static int videoFrameRate=3;
 public static int videoQuality=0; // 0 is the max quality
 public static int videoBitRate=9000;
 public static String videoFormat="mp4";
 public static int videoCodec=avcodec.AV_CODEC_ID_MPEG4;
 public static Thread t1=null;
 public static Thread t2=null;
 public static JFrame frame=null;
 public static boolean isRegionSelected=false;
 public static int c1=0;
 public static int c2=0;
 public static int c3=0;
 public static int c4=0;
 
 
 public static void main(String[] args) {
 
 try {
 if(getRecorder()==null)
 {
 System.out.println("Cannot make recorder object, Exiting program");
 System.exit(0);
 }
 if(getRobot()==null)
 {
 System.out.println("Cannot make robot object, Exiting program");
 System.exit(0);
 }
 File scanFolder=new File(inputImageDir);
 scanFolder.delete();
 scanFolder.mkdirs();
 
 createGUI();
 } catch (Exception e) {
 System.out.println("Exception in program "+e.getMessage());
 }
 }
 
 public static void createGUI()
 {
 frame=new JFrame("Screen Recorder");
 JButton b1=new JButton("Select Region for Recording");
 JButton b2=new JButton("Start Recording");
 JButton b3=new JButton("Stop Recording");
 JLabel l1=new JLabel("<br />If you dont select a region then full screen recording <br /> will be made when you click on Start Recording");
 l1.setFont (l1.getFont ().deriveFont (20.0f));
 b1.addActionListener(new ActionListener() {
 @Override
 public void actionPerformed(ActionEvent e) {
 try {
 JOptionPane.showMessageDialog(frame, "A new window will open. Use your mouse to select the region you like to record");
 new CropRegion().getImage();
 } catch (Exception e1) {
 // TODO Auto-generated catch block
 System.out.println("Issue while trying to call the module to crop region");
 e1.printStackTrace();
 } 
 }
 });
 b2.addActionListener(new ActionListener() {
 @Override
 public void actionPerformed(ActionEvent e) {
 counter=0;
 startRecording();
 }
 });
 b3.addActionListener(new ActionListener() {
 @Override
 public void actionPerformed(ActionEvent e) {
 stopRecording();
 System.out.print("Exiting...");
 System.exit(0);
 }
 });
 
 frame.add(b1);
 frame.add(b2);
 frame.add(b3);
 frame.add(l1);
 frame.setLayout(new FlowLayout(0));
 frame.setVisible(true);
 frame.setSize(1000, 170);
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 }
 
 public static void startRecording()
 {
 t1=new Thread()
 {
 public void run() {
 try {
 takeScreenshot(getRobot());
 } catch (Exception e) {
 JOptionPane.showMessageDialog(frame, "Cannot make robot object, Exiting program "+e.getMessage());
 System.out.println("Cannot make robot object, Exiting program "+e.getMessage());
 System.exit(0);
 }
 }
 };
 
 t2=new Thread()
 {
 public void run() {
 prepareVideo();
 }
 };
 
 t1.start();
 t2.start();
 System.out.println("Started recording at "+new Date());
 }
 
 public static Robot getRobot() throws Exception
 {
 Robot r=null;
 try {
 r = new Robot();
 return r;
 } catch (AWTException e) {
 JOptionPane.showMessageDialog(frame, "Issue while initiating Robot object "+e.getMessage());
 System.out.println("Issue while initiating Robot object "+e.getMessage());
 throw new Exception("Issue while initiating Robot object");
 }
 }
 
 public static void takeScreenshot(Robot r)
 {
 Dimension size = Toolkit.getDefaultToolkit().getScreenSize();
 Rectangle rec=new Rectangle(size);
 if(isRegionSelected)
 {
 rec=new Rectangle(c1, c2, c3-c1, c4-c2);
 }
 while(!videoComplete)
 {
 counter++;
 BufferedImage img = r.createScreenCapture(rec);
 try {
 ImageIO.write(img, inputImgExt, new File(inputImageDir+counter+"."+inputImgExt));
 } catch (IOException e) {
 JOptionPane.showMessageDialog(frame, "Got an issue while writing the screenshot to disk "+e.getMessage());
 System.out.println("Got an issue while writing the screenshot to disk "+e.getMessage());
 counter--;
 }
 }
 }
 
 public static void prepareVideo()
 {
 File scanFolder=new File(inputImageDir);
 while(!videoComplete)
 {
 File[] inputFiles=scanFolder.listFiles();
 try {
 getRobot().delay(500);
 } catch (Exception e) {
 }
 //for(int i=0;i/imgProcessed++;
 addImageToVideo(inputFiles[i].getAbsolutePath());
 //String imgToAdd=scanFolder.getAbsolutePath()+File.separator+imgProcessed+"."+inputImgExt;
 //addImageToVideo(imgToAdd);
 //new File(imgToAdd).delete();
 inputFiles[i].delete();
 }
 }
 
 File[] inputFiles=scanFolder.listFiles();
 for(int i=0;i/ maximum quality
 recorder.start();
 }
 catch(Exception e)
 {
 JOptionPane.showMessageDialog(frame, "Exception while starting the recorder object "+e.getMessage());
 System.out.println("Exception while starting the recorder object "+e.getMessage());
 throw new Exception("Unable to start recorder");
 }
 return recorder;
 }
 
 public static OpenCVFrameConverter.ToIplImage getFrameConverter()
 {
 OpenCVFrameConverter.ToIplImage grabberConverter = new OpenCVFrameConverter.ToIplImage();
 return grabberConverter;
 }
 
 public static void addImageToVideo(String imgPath)
 {
 try {
 getRecorder().record(getFrameConverter().convert(cvLoadImage(imgPath)));
 } catch (Exception e) {
 JOptionPane.showMessageDialog(frame, "Exception while adding image to video "+e.getMessage());
 System.out.println("Exception while adding image to video "+e.getMessage());
 }
 }
 
 public static void stopRecording()
 {
 try {
 videoComplete=true;
 System.out.println("Stopping recording at "+new Date());
 t1.join();
 System.out.println("Screenshot thread complete");
 t2.join();
 System.out.println("Video maker thread complete");
 getRecorder().stop();
 System.out.println("Recording has been saved successfully at "+new File(outputVideo).getAbsolutePath());
 JOptionPane.showMessageDialog(frame, "Recording has been saved successfully at "+new File(outputVideo).getAbsolutePath());
 } catch (Exception e) {
 System.out.println("Exception while stopping the recorder "+e.getMessage());
 }
 }
 }


Imagepanel.java


import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.ImageIcon;
import javax.swing.JPanel;

class ImagePanel
 extends JPanel
{
 private Image img;
 
 public ImagePanel(String img)
 {
 this(new ImageIcon(img).getImage());
 }
 
 public ImagePanel(Image img)
 {
 this.img = img;
 Dimension size = new Dimension(img.getWidth(null), img.getHeight(null));
 
 setPreferredSize(size);
 setMinimumSize(size);
 setMaximumSize(size);
 setSize(size);
 setLayout(null);
 }
 
 public void paintComponent(Graphics g)
 {
 g.drawImage(this.img, 0, 0, null);
 }
}


CropRegion.java


import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;


public class CropRegion implements MouseListener,
 MouseMotionListener {

 int drag_status = 0;
 int c1;
 int c2;
 int c3;
 int c4;
 JFrame frame=null;
 static int counter=0;
 JLabel background=null;

 
 public void getImage() throws AWTException, IOException, InterruptedException {
 Dimension size = Toolkit.getDefaultToolkit().getScreenSize();
 Robot robot = new Robot();
 BufferedImage img = robot.createScreenCapture(new Rectangle(size));
 ImagePanel panel = new ImagePanel(img);
 frame=new JFrame();
 frame.add(panel);
 frame.setLocation(0, 0);
 frame.setSize(size);
 frame.setLayout(new FlowLayout());
 frame.setUndecorated(true);
 frame.setVisible(true);
 frame.addMouseListener(this);
 frame.addMouseMotionListener(this);
 frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
 }

 public void draggedScreen() throws Exception {
 ScreenRecorder.c1=c1;
 ScreenRecorder.c2=c2;
 ScreenRecorder.c3=c3;
 ScreenRecorder.c4=c4;
 ScreenRecorder.isRegionSelected=true;
 JOptionPane.showMessageDialog(frame, "Region Selected.Please click on Start Recording button to record the selected region.");
 frame.dispose();
 }

 public void mouseClicked(MouseEvent arg0) {
 }

 public void mouseEntered(MouseEvent arg0) {
 }

 public void mouseExited(MouseEvent arg0) {
 }

 public void mousePressed(MouseEvent arg0) {
 paint();
 this.c1 = arg0.getX();
 this.c2 = arg0.getY();
 }

 public void mouseReleased(MouseEvent arg0) {
 paint();
 if (this.drag_status == 1) {
 this.c3 = arg0.getX();
 this.c4 = arg0.getY();
 try {
 draggedScreen();
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 }

 public void mouseDragged(MouseEvent arg0) {
 paint();
 this.drag_status = 1;
 this.c3 = arg0.getX();
 this.c4 = arg0.getY();
 }

 public void mouseMoved(MouseEvent arg0) {
 }

 public void paint() {
 Graphics g = frame.getGraphics();
 frame.repaint();
 int w = this.c1 - this.c3;
 int h = this.c2 - this.c4;
 w *= -1;
 h *= -1;
 if (w < 0) {
 w *= -1;
 }
 g.drawRect(this.c1, this.c2, w, h);
 }
}


Syndiquer tout le site
