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Médias (2)
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Exemple de boutons d’action pour une collection collaborative
27 février 2013, par
Mis à jour : Mars 2013
Langue : français
Type : Image
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Exemple de boutons d’action pour une collection personnelle
27 février 2013, par
Mis à jour : Février 2013
Langue : English
Type : Image
Autres articles (14)
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List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Encodage et transformation en formats lisibles sur Internet
10 avril 2011MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...) -
Problèmes fréquents
10 mars 2010, parPHP et safe_mode activé
Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site
Sur d’autres sites (5427)
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ffmpeg problems (mpeg1video -> ?)
3 juillet 2015, par IngloniasI’m trying to convert various video files from .mpeg to .ogg theora videos. This command works fine when I test it in its own program, but fails to run properly inside the program it was intended for. I don’t understand what’s breaking here. Adding a
-vcodecflag causes other errors.Here is the function I am using to run
ffmpeg:* This method converts a file to Ogg Theora video using ffmpeg.
*
* @param f
* The file to encode. (Assumes that the file has a .mpeg
* extension. If the file doesn't have this, the method will
* fail.)
* @param nice The niceness of the created ffmpeg
* priority.
* @return converter The process that represents ffmpeg working on the file.
*/
private Process encodeFileAsTheora(File f, int nice) {
Process converter = null;
try {
String targetFileName = f.getAbsolutePath()
.replace(".mpeg", ".ogg");
// mLogger.log(Level.INFO,
// "Now attempting to convert " + f.getAbsolutePath());
String[] ffmpegCommand = { "nice", "-n", Integer.toString(nice),
"ffmpeg", "-i", f.getAbsolutePath(), targetFileName };
converter = Runtime.getRuntime().exec(ffmpegCommand);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return converter;
}And here is its
getErrorStream()output to the logger :NON RELEVANT CONTENT REMOVED
configuration : —extra-ldflags=-L/home/user/trunk/cpp_src/ffmpeg-source/libvpx —extra-ldflags=-L/home/user/trunk/cpp_src/ffmpeg-source/x264 —extra-cflags=-I/home/user/trunk/cpp_src/ffmpeg-source/x264 —extra-cflags=-I/home/user/trunk/cpp_src/ffmpeg-source/libvpx —enable-libvpx —enable-libx264 —enable-gpl —yasmexe=/home/user/trunk/cpp_src/ffmpeg-source/yasm/yasm
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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());
} -
Decoding audio via Android using FFMpeg
31 octobre 2013, par Rob HauptI can play Wav files using the below code without issues. When trying to play the exact same media in Mp3 format I only get garbled junk. I believe I am fundamentally misunderstanding how the avcodec_decode_audio3 function works.
Since the Wav file contains PCM data when it is decoded it can go straight to the AudioTrack.write function. There must be some additional step to get Mp3s to work like this. I don't know what I'm missing, but I've been pulling my hair out for a week now.
Java Code
package com.rohaupt.RRD2;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTrack;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.SystemClock;
public class player extends Activity
{
private AudioTrack track;
private FileOutputStream os;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
createEngine();
MediaPlayer mp = new MediaPlayer();
mp.start();
int bufSize = AudioTrack.getMinBufferSize(32000,
AudioFormat.CHANNEL_CONFIGURATION_STEREO,
AudioFormat.ENCODING_PCM_16BIT);
track = new AudioTrack(AudioManager.STREAM_MUSIC,
32000,
AudioFormat.CHANNEL_CONFIGURATION_STEREO,
AudioFormat.ENCODING_PCM_16BIT,
bufSize,
AudioTrack.MODE_STREAM);
byte[] bytes = new byte[bufSize];
try {
os = new FileOutputStream("/sdcard/a.out",false);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String result = loadFile("/sdcard/a.mp3",bytes);
try {
os.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
void playSound(byte[] buf, int size) {
//android.util.Log.v("ROHAUPT", "RAH Playing");
if(track.getPlayState()!=AudioTrack.PLAYSTATE_PLAYING)
track.play();
track.write(buf, 0, size);
try {
os.write(buf,0,size);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private native void createEngine();
private native String loadFile(String file, byte[] array);
/** Load jni .so on initialization*/
static {
System.loadLibrary("avutil");
System.loadLibrary("avcore");
System.loadLibrary("avcodec");
System.loadLibrary("avformat");
System.loadLibrary("avdevice");
System.loadLibrary("swscale");
System.loadLibrary("avfilter");
System.loadLibrary("ffmpeg");
}
}C Code
#include
#include
#include
#include <android></android>log.h>
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#define DEBUG_TAG "ROHAUPT"
void Java_com_rohaupt_RRD2_player_createEngine(JNIEnv* env, jclass clazz)
{
avcodec_init();
av_register_all();
}
jstring Java_com_rohaupt_RRD2_player_loadFile(JNIEnv* env, jobject obj,jstring file,jbyteArray array)
{
jboolean isCopy;
int i;
int audioStream=-1;
int res;
int decoded = 0;
int out_size;
AVFormatContext *pFormatCtx;
AVCodecContext *aCodecCtx;
AVCodecContext *c= NULL;
AVCodec *aCodec;
AVPacket packet;
jclass cls = (*env)->GetObjectClass(env, obj);
jmethodID play = (*env)->GetMethodID(env, cls, "playSound", "([BI)V");//At the begining of your main function
const char * szfile = (*env)->GetStringUTFChars(env, file, &isCopy);
int16_t * pAudioBuffer = (int16_t *) av_malloc (AVCODEC_MAX_AUDIO_FRAME_SIZE*2+FF_INPUT_BUFFER_PADDING_SIZE);
int16_t * outBuffer = (int16_t *) av_malloc (AVCODEC_MAX_AUDIO_FRAME_SIZE*2+FF_INPUT_BUFFER_PADDING_SIZE);
__android_log_print(ANDROID_LOG_INFO, DEBUG_TAG, "RAH28 Starting");
res = av_open_input_file(&pFormatCtx, szfile, NULL, 0, NULL);
if(res!=0)
{
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH opening input failed with result: [%d]", res);
return file;
}
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH getting stream info");
res = av_find_stream_info(pFormatCtx);
if(res<0)
{
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH getting stream info failed with result: [%d]", res);
return file;
}
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH getting audio stream");
for(i=0; i < pFormatCtx->nb_streams; i++) {
if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_AUDIO &&
audioStream < 0) {
audioStream=i;
}
}
if(audioStream==-1)
{
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH couldn't find audio stream");
return file;
}
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH audio stream found with result: [%d]", res);
aCodecCtx=pFormatCtx->streams[audioStream]->codec;
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH audio codec info loaded");
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH audio codec info [%d]", aCodecCtx->codec_id);
aCodec = avcodec_find_decoder(aCodecCtx->codec_id);
if(!aCodec) {
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH audio codec unsupported");
return file;
}
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH audio codec info found");
res = avcodec_open(aCodecCtx, aCodec);
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH audio codec loaded [%d] [%d]",aCodecCtx->sample_fmt,res);
//c=avcodec_alloc_context();
av_init_packet(&packet);
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH channels [%d] sample rate [%d] sample format [%d]",aCodecCtx->channels,aCodecCtx->sample_rate,aCodecCtx->sample_fmt);
int x,y;
x=0;y=0;
while (av_read_frame(pFormatCtx, &packet)>= 0) {
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH frame read: [%d] [%d]",x++,y);
if (aCodecCtx->codec_type == AVMEDIA_TYPE_AUDIO) {
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH audio ready");
int data_size = AVCODEC_MAX_AUDIO_FRAME_SIZE*2+FF_INPUT_BUFFER_PADDING_SIZE;
int size=packet.size;
y=0;
decoded = 0;
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH packet size: [%d]", size);
while(size > 0) {
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH decoding: [%d] [%d]",x,y++);
int len = avcodec_decode_audio3(aCodecCtx, pAudioBuffer, &data_size, &packet);
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH 1 size [%d] len [%d] data_size [%d] out_size [%d]",size,len,data_size,out_size);
jbyte *bytes = (*env)->GetByteArrayElements(env, array, NULL);
memcpy(bytes + decoded, pAudioBuffer, len); //
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH 2");
(*env)->ReleaseByteArrayElements(env, array, bytes, 0);
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH 3");
(*env)->CallVoidMethod(env, obj, play, array, len);
__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH 4");
size -= len;
decoded += len;
}
av_free_packet(&packet);
}
}
// Close the video file
av_close_input_file(pFormatCtx);
//__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH Finished Running result: [%d]", res);
(*env)->ReleaseStringUTFChars(env, file, szfile);
return file;
}To add some detail. When Calling this function with a Wav File I get the following Log Data
I/ROHAUPT ( 227): RAH28 Starting
D/ROHAUPT ( 227): RAH getting stream info
D/ROHAUPT ( 227): RAH getting audio stream
D/ROHAUPT ( 227): RAH audio stream found with result: [0]
D/ROHAUPT ( 227): RAH audio codec info loaded
D/ROHAUPT ( 227): RAH audio codec info [65536]
D/ROHAUPT ( 227): RAH audio codec info found
D/ROHAUPT ( 227): RAH audio codec loaded [1] [0]
D/ROHAUPT ( 227): RAH channels [2] sample rate [32000] sample format [1]
D/ROHAUPT ( 227): RAH frame read: [0] [0]
D/ROHAUPT ( 227): RAH audio ready
D/ROHAUPT ( 227): RAH packet size: [4096]
D/ROHAUPT ( 227): RAH decoding: [1] [0]
D/ROHAUPT ( 227): RAH 1 size [4096] len [4096] data_size [4096] out_size [0]
D/ROHAUPT ( 227): RAH 2
D/ROHAUPT ( 227): RAH 3
D/ROHAUPT ( 227): RAH 4
D/ROHAUPT ( 227): RAH frame read: [1] [1]
D/ROHAUPT ( 227): RAH audio ready
...
D/ROHAUPT ( 227): RAH frame read: [924] [1]
D/ROHAUPT ( 227): RAH audio ready
D/ROHAUPT ( 227): RAH packet size: [4096]
D/ROHAUPT ( 227): RAH decoding: [925] [0]
D/ROHAUPT ( 227): RAH 1 size [4096] len [4096] data_size [4096] out_size [0]
D/ROHAUPT ( 227): RAH 2
D/ROHAUPT ( 227): RAH 3
D/ROHAUPT ( 227): RAH 4
D/ROHAUPT ( 227): RAH frame read: [925] [1]
D/ROHAUPT ( 227): RAH audio ready
D/ROHAUPT ( 227): RAH packet size: [3584]
D/ROHAUPT ( 227): RAH decoding: [926] [0]
D/ROHAUPT ( 227): RAH 1 size [3584] len [3584] data_size [3584] out_size [0]
D/ROHAUPT ( 227): RAH 2
D/ROHAUPT ( 227): RAH 3
D/ROHAUPT ( 227): RAH 4When calling with an Mp3 file I get the following
I/ROHAUPT ( 280): RAH28 Starting
D/ROHAUPT ( 280): RAH getting stream info
D/ROHAUPT ( 280): RAH getting audio stream
D/ROHAUPT ( 280): RAH audio stream found with result: [0]
D/ROHAUPT ( 280): RAH audio codec info loaded
D/ROHAUPT ( 280): RAH audio codec info [86017]
D/ROHAUPT ( 280): RAH audio codec info found
D/ROHAUPT ( 280): RAH audio codec loaded [1] [0]
D/ROHAUPT ( 280): RAH channels [2] sample rate [32000] sample format [1]
D/ROHAUPT ( 280): RAH frame read: [0] [0]
D/ROHAUPT ( 280): RAH audio ready
D/ROHAUPT ( 280): RAH packet size: [432]
D/ROHAUPT ( 280): RAH decoding: [1] [0]
D/ROHAUPT ( 280): RAH 1 size [432] len [432] data_size [4608] out_size [0]
D/ROHAUPT ( 280): RAH 2
...
D/ROHAUPT ( 280): RAH frame read: [822] [1]
D/ROHAUPT ( 280): RAH audio ready
D/ROHAUPT ( 280): RAH packet size: [432]
D/ROHAUPT ( 280): RAH decoding: [823] [0]
D/ROHAUPT ( 280): RAH 1 size [432] len [432] data_size [4608] out_size [0]
D/ROHAUPT ( 280): RAH 2
D/ROHAUPT ( 280): RAH 3
D/ROHAUPT ( 280): RAH 4
D/ROHAUPT ( 280): RAH frame read: [823] [1]
D/ROHAUPT ( 280): RAH audio ready
D/ROHAUPT ( 280): RAH packet size: [432]
D/ROHAUPT ( 280): RAH decoding: [824] [0]
D/ROHAUPT ( 280): RAH 1 size [432] len [432] data_size [4608] out_size [0]
D/ROHAUPT ( 280): RAH 2
D/ROHAUPT ( 280): RAH 3
D/ROHAUPT ( 280): RAH 4
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