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Médias (1)
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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (38)
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Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...)
Sur d’autres sites (6832)
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Decode Frame into a byte array to IplImage
20 février 2015, par Ernesto LuisI have a .drv file with 4 channels of videos. I already remove the owner headers of each frame and I get a byte array that contains the frame bytes in Mpeg4 without any header. So what I need is decode this frame (byte array) using javaCv / ffmpeg to obtain a IplImage or .jpeg image.
Here you have some code for ideas.public static void main(String[] args) throws IOException
byte [] dvr1= new byte[8*1024];
byte [] dvr;
try {
System.out.println("Leyendo...");
FileInputStream fileInput= new FileInputStream("D:\\muestra.drv");
ByteArrayOutputStream baos= new ByteArrayOutputStream();
if(fileInput!=null){
BufferedInputStream bufferedInput = new BufferedInputStream(fileInput);
// Streams y buffers de escritura.
//Leer el fichero completo y ponerlo en memoria
int leidos = 0;
while((leidos= bufferedInput.read(dvr1))>=0){
baos.write(dvr1, 0, leidos);
}
//Pasar el contenido del fichero almacenado en memoria al arreglo de Bytes
dvr= baos.toByteArray();
baos.reset();
baos.close();
int lon= dvr.length;
//Buscar el comienzo del header
int offset=0;
while(offset=dvr.length)
break;
}
byte[] head= Arrays.copyOfRange(dvr, offset, offset+32);
offset+=32;
BasicHeader bHeader= new BasicHeader(head);
ExtraHeader xHeader= new ExtraHeader(head);
offset+=xHeader.SuperExtraSize;
PESHeader pesHeader= new PESHeader(Arrays.copyOfRange(dvr, offset,offset+32));
offset+=32;
byte[]frame;
if(offset+bHeader.Size/ Here is the problem
DecodeFrame(frame);
}
// System.out.println("No se encontro el archivo");
} catch (java.lang.Exception e) {
// TODO: handle exception
System.out.println(e.getMessage());
} -
NoClassDefFoundError at FFmpegFrameRecorder
30 janvier 2015, par Sanjay RapoluI am developing a android application and converting set of images into videos is one of its functionality. whenever I am trying to create an object of FFmpegFrameRecorder, NoClassDefFoundError java lang.ClassNotFoundException org.bytedeco.javacv.FFmpegFraerecorder exception is getting throwed. Here is the code on which I’m working. can anyone please suggest the reason for this error and the solution ?
package com.example.makevideo;
import java.io.File;
import org.bytedeco.javacpp.opencv_core;
import org.bytedeco.javacpp.opencv_core.IplImage;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import static org.bytedeco.javacpp.opencv_highgui.cvLoadImage;
public class MainActivity extends Activity {
private static final String EXTR_DIR = "Screenshot";
String path = Environment.getExternalStorageDirectory() + File.separator
+ EXTR_DIR;
Button Record;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
System.out.println("Application Runs");
Toast.makeText(getApplicationContext(), path, Toast.LENGTH_SHORT)
.show();
;
recording();
}
private void recording() {
// TODO Auto-generated method stub
Record = (Button) findViewById(R.id.Record);
Record.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
System.out.println(path);
Toast.makeText(getApplicationContext(), path, Toast.LENGTH_LONG)
.show();
Log.d("Record",
"Environment.getExternalStorageDirectory().getPath() : "
+ path);
record();
}
});
}
private void record() {
File folder = new File(path);
File[] listOfFiles = folder.listFiles();
opencv_core.IplImage[] iplimage = null;
if (listOfFiles.length > 0) {
System.out.println("in IFFF...");
// Toast.makeText(getApplicationContext(), listOfFiles.length,
// Toast.LENGTH_SHORT).show();
iplimage = new opencv_core.IplImage[listOfFiles.length];
for (int j = 0; j < listOfFiles.length; j++) {
String files = "";
if (listOfFiles[j].isFile()) {
files = listOfFiles[j].getName();
System.out.println(" j " + j + listOfFiles[j]);
}
String[] tokens = files.split("\\.(?=[^\\.]+$)");
String name = tokens[0];
Toast.makeText(getApplicationContext(),
"size=" + listOfFiles.length, Toast.LENGTH_SHORT)
.show();
iplimage[j] = cvLoadImage(path + File.separator + name + ".jpg");
}
}
FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(path
+ File.separator + "OUTPUT" + System.currentTimeMillis()
+ ".mp4", 200, 150);
try {
recorder.setVideoCodec(13); // CODEC_ID_MPEG4 //CODEC_ID_MPEG1VIDEO
// //http://stackoverflow.com/questions/14125758/javacv-ffmpegframerecorder-properties-explanation-needed
recorder.setFrameRate(1); // This is the frame rate for video. If
// you really want to have good video
// quality you need to provide large set
// of images.
recorder.setPixelFormat(0); // PIX_FMT_YUV420P
recorder.start();
for (int i = 0; i < iplimage.length; i++) {
recorder.record(iplimage[i]);
}
recorder.stop();
Toast.makeText(MainActivity.this, "Record Completed",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
} -
how to create video from multiple sequence of images using FFMpeg ?
24 février 2015, par Jignesh PatelHello all i am new in android developing. I want to create video from sequence of images. And i already fetch images from the specific folder which is resides in external memory card in android devices but i do not know how to use FF MPEG library to convert images into a video file. i had much tried to find out solution but yet i could not get the solution.
Any help would be appreciated and Thanks in advance.I implement below code but it does not working.
private void convertImg_to_vid()
// TODO Auto-generated method stub
Process chperm;
try {
chperm=Runtime.getRuntime().exec("su");
DataOutputStream os =
new DataOutputStream(chperm.getOutputStream());
os.writeBytes("ffmpeg -f image2 -i img%d.jpg /tmp/a.mpg\n");
os.flush();
chperm.waitFor();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}