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MediaSPIP Simple : futur thème graphique par défaut ?
26 septembre 2013, par
Mis à jour : Octobre 2013
Langue : français
Type : Video
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avec chosen
13 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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sans chosen
13 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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config chosen
13 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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SPIP - plugins - embed code - Exemple
2 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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GetID3 - Bloc informations de fichiers
9 avril 2013, par
Mis à jour : Mai 2013
Langue : français
Type : Image
Autres articles (66)
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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 (...) -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (10477)
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How would I send x264 encoded frames correctly over a network using UDP ?
5 avril 2020, par Eoin McBennettI'm trying to send the encoded h264 frames I have over a network as I get them, currently I'm only streaming the nal units I get from each frame as it is encoded, is this the correct approach ?



I wrote a receiver application on a different computer to get the nals and wrote them all to a file sequentially, when played with vlc I didn't get any video and instead just got a screeching noise. I'm not sure exactly where the problem would lie here. I have included the result of the FFmpeg -I command on the file created.



Encoder and sender code




 //Udp initialisation
 struct sockaddr_in broadcastAddr;
 int sock;
 int yes = 1;
 int addr_len;
 int count;
 fd_set readfd;
 char buffer[1024];
 int i;

 sock = socket(AF_INET, SOCK_DGRAM,0);

 if(sock < 0){
 std::cout << "Failed to initialise socket!" << std::endl;
 }

 int ret = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char*)&yes, sizeof(yes));
 if(ret < 0){
 std::cout << "setsockopt error!" </ the size of the address

 memset((void*)&broadcastAddr,0,addr_len); //0 out the address bits

 broadcastAddr.sin_family = AF_INET;
 broadcastAddr.sin_addr.s_addr = INADDR_BROADCAST;
 broadcastAddr.sin_port = PORT;



 //Set the encoder parameters
 x264_param_t param;
 x264_param_default_preset(&param,"veryfast","zerolatency");
 param.i_threads = 1;
 param.i_width = camera.getWidth();
 param.i_height = camera.getHeight();
 param.i_fps_num = 30;
 param.i_fps_den = 1;
// Intra refres:
 param.i_keyint_max = 30;
 param.b_intra_refresh = 1;
//Rate control:
 param.rc.i_rc_method = X264_RC_CRF;
 param.rc.f_rf_constant = 25;
 param.rc.f_rf_constant_max = 35;
//For streaming:
 param.b_repeat_headers = 1;
 param.b_annexb = 1;
 x264_param_apply_profile(&param, "baseline");

 x264_t *encoder = x264_encoder_open(&param); //H.264 encoder object
 x264_picture_t pic_in, pic_out;
 x264_picture_alloc(&pic_in, X264_CSP_I420,camera.getWidth(), camera.getHeight());

 //Network abstraction layer units for broadcast
 x264_nal_t *nals;
 int i_nals;

 while(true){

 //If there is valid data in the processing queue
 if(!encoderQueue.empty()){

 //File the x264 input data structure with the file data
 fillImage(encoderQueue.front(),camera.getWidth(),camera.getHeight(),&pic_in);

 //Encode and send
 int frame_size = x264_encoder_encode(encoder, &nals, &i_nals, &pic_in, &pic_out);
 if (frame_size >= 0) {
 //The frame is ready to be sent over UDP!
 for(int i = 0; i < i_nals; i++){
 ret = sendto(sock, &nals[0].p_payload, frame_size,0,(struct sockaddr*)&broadcastAddr,addr_len);
 if(ret > 0){
 std::cout << "Streamed frame nal unit " << i << std::endl;
 } else{
 std::cout << "Failed to stream nal unit " << i << std::endl;
 }
 }
 }
 else{
 std::cout<<"Failed to encode h264 frame!" << std::endl;
 }
 //Finsihed with the current frame, pop it off the queue and remove any nals to do with it
 encoderQueue.pop();
 frame_size = 0;
 nals = nullptr;
 i_nals = 0;
 }


 }



Receiver application



#include <iostream>
#include 
#include <network></network>Network.h>
#include <netinet></netinet>in.h>
#include <arpa></arpa>inet.h>
#include <sys></sys>types.h>
#include <sys></sys>socket.h>
#include <queue>


#define BUFFER_LEN 10000
#define PORT_NO 3879



int main(int argc, const char * argv[]) {


 FILE *file; //File to write the h264 nals too

 //Declare the address memory space
 struct sockaddr_in sockAddr , bcAddr;
 socklen_t bcAddr_len = sizeof(&bcAddr); //Store the length of the broadcast address structure
 //0 out the assigned memory
 memset(&sockAddr, 0, sizeof(sockAddr));
 memset(&bcAddr, 0 ,sizeof(bcAddr));

 //Set the address parameters to look for incoming IpV4/UDP data
 sockAddr.sin_family = AF_INET;
 sockAddr.sin_port = htons(PORT_NO);
 sockAddr.sin_addr.s_addr = htonl(INADDR_ANY);

 bcAddr.sin_family = AF_INET;
 bcAddr.sin_port = PORT_NO;
 inet_aton("255.255.255.255",&bcAddr.sin_addr);

 //Initialise a udp socket to read broadcast bytes
 int soc = socket(AF_INET, SOCK_DGRAM,0);

 //Check socket init
 if(soc < 0){
 std::cout << "Failed to initialise UDP socket!" << std::endl;
 return -1;
 }

 //Bind the address details to the socket, check for errors
 if(bind(soc, (struct sockaddr*)&sockAddr, sizeof(sockAddr)) < 0){
 std::cout << "Failed to bind address structure to socket!" << std::endl;
 return -2;
 }

 file = fopen("stream.h264","wb"); // Open the file for writing

 unsigned char buffer[BUFFER_LEN];

 while(true){


 memset(&buffer, 0, sizeof(unsigned char) * BUFFER_LEN);

 int recv_len = recvfrom(soc, buffer, BUFFER_LEN, 0, (struct sockaddr *)&bcAddr, &bcAddr_len);

 std::cout<< "Received " << recv_len << "bytes on broadcast address" << std::endl;

 fwrite(&buffer, sizeof(unsigned char), recv_len, file);
 }

 return 0;
}
</queue></iostream>


FFMPEG -I output






Any help would be greatly appreciated.


-
How would I send x264 encoded frames correctly over a network using UDP ?
5 avril 2020, par Eoin McBennettI'm trying to send the encoded h264 frames I have over a network as I get them, currently I'm only streaming the nal units I get from each frame as it is encoded, is this the correct approach ?



I wrote a receiver application on a different computer to get the nals and wrote them all to a file sequentially, when played with vlc I didn't get any video and instead just got a screeching noise. I'm not sure exactly where the problem would lie here. I have included the result of the FFmpeg -I command on the file created.



Encoder and sender code




 //Udp initialisation
 struct sockaddr_in broadcastAddr;
 int sock;
 int yes = 1;
 int addr_len;
 int count;
 fd_set readfd;
 char buffer[1024];
 int i;

 sock = socket(AF_INET, SOCK_DGRAM,0);

 if(sock < 0){
 std::cout << "Failed to initialise socket!" << std::endl;
 }

 int ret = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char*)&yes, sizeof(yes));
 if(ret < 0){
 std::cout << "setsockopt error!" </ the size of the address

 memset((void*)&broadcastAddr,0,addr_len); //0 out the address bits

 broadcastAddr.sin_family = AF_INET;
 broadcastAddr.sin_addr.s_addr = INADDR_BROADCAST;
 broadcastAddr.sin_port = PORT;



 //Set the encoder parameters
 x264_param_t param;
 x264_param_default_preset(&param,"veryfast","zerolatency");
 param.i_threads = 1;
 param.i_width = camera.getWidth();
 param.i_height = camera.getHeight();
 param.i_fps_num = 30;
 param.i_fps_den = 1;
// Intra refres:
 param.i_keyint_max = 30;
 param.b_intra_refresh = 1;
//Rate control:
 param.rc.i_rc_method = X264_RC_CRF;
 param.rc.f_rf_constant = 25;
 param.rc.f_rf_constant_max = 35;
//For streaming:
 param.b_repeat_headers = 1;
 param.b_annexb = 1;
 x264_param_apply_profile(&param, "baseline");

 x264_t *encoder = x264_encoder_open(&param); //H.264 encoder object
 x264_picture_t pic_in, pic_out;
 x264_picture_alloc(&pic_in, X264_CSP_I420,camera.getWidth(), camera.getHeight());

 //Network abstraction layer units for broadcast
 x264_nal_t *nals;
 int i_nals;

 while(true){

 //If there is valid data in the processing queue
 if(!encoderQueue.empty()){

 //File the x264 input data structure with the file data
 fillImage(encoderQueue.front(),camera.getWidth(),camera.getHeight(),&pic_in);

 //Encode and send
 int frame_size = x264_encoder_encode(encoder, &nals, &i_nals, &pic_in, &pic_out);
 if (frame_size >= 0) {
 //The frame is ready to be sent over UDP!
 for(int i = 0; i < i_nals; i++){
 ret = sendto(sock, &nals[0].p_payload, frame_size,0,(struct sockaddr*)&broadcastAddr,addr_len);
 if(ret > 0){
 std::cout << "Streamed frame nal unit " << i << std::endl;
 } else{
 std::cout << "Failed to stream nal unit " << i << std::endl;
 }
 }
 }
 else{
 std::cout<<"Failed to encode h264 frame!" << std::endl;
 }
 //Finsihed with the current frame, pop it off the queue and remove any nals to do with it
 encoderQueue.pop();
 frame_size = 0;
 nals = nullptr;
 i_nals = 0;
 }


 }



Receiver application



#include <iostream>
#include 
#include <network></network>Network.h>
#include <netinet></netinet>in.h>
#include <arpa></arpa>inet.h>
#include <sys></sys>types.h>
#include <sys></sys>socket.h>
#include <queue>


#define BUFFER_LEN 10000
#define PORT_NO 3879



int main(int argc, const char * argv[]) {


 FILE *file; //File to write the h264 nals too

 //Declare the address memory space
 struct sockaddr_in sockAddr , bcAddr;
 socklen_t bcAddr_len = sizeof(&bcAddr); //Store the length of the broadcast address structure
 //0 out the assigned memory
 memset(&sockAddr, 0, sizeof(sockAddr));
 memset(&bcAddr, 0 ,sizeof(bcAddr));

 //Set the address parameters to look for incoming IpV4/UDP data
 sockAddr.sin_family = AF_INET;
 sockAddr.sin_port = htons(PORT_NO);
 sockAddr.sin_addr.s_addr = htonl(INADDR_ANY);

 bcAddr.sin_family = AF_INET;
 bcAddr.sin_port = PORT_NO;
 inet_aton("255.255.255.255",&bcAddr.sin_addr);

 //Initialise a udp socket to read broadcast bytes
 int soc = socket(AF_INET, SOCK_DGRAM,0);

 //Check socket init
 if(soc < 0){
 std::cout << "Failed to initialise UDP socket!" << std::endl;
 return -1;
 }

 //Bind the address details to the socket, check for errors
 if(bind(soc, (struct sockaddr*)&sockAddr, sizeof(sockAddr)) < 0){
 std::cout << "Failed to bind address structure to socket!" << std::endl;
 return -2;
 }

 file = fopen("stream.h264","wb"); // Open the file for writing

 unsigned char buffer[BUFFER_LEN];

 while(true){


 memset(&buffer, 0, sizeof(unsigned char) * BUFFER_LEN);

 int recv_len = recvfrom(soc, buffer, BUFFER_LEN, 0, (struct sockaddr *)&bcAddr, &bcAddr_len);

 std::cout<< "Received " << recv_len << "bytes on broadcast address" << std::endl;

 fwrite(&buffer, sizeof(unsigned char), recv_len, file);
 }

 return 0;
}
</queue></iostream>


FFMPEG -I output






Any help would be greatly appreciated.


-
JavaCV : avformat_open_input() hangs (not network, but with custom AVIOContext)
14 octobre 2015, par Yun Tao HaiI’m using a custom AVIOContext to bridge FFMpeg with java IO. The function
avformat_open_input()never returns. I have searched the web for similar problems, all of which were caused by faulty network or wrong server configurations. However, I’m not using network at all, as you can see in the following little program :package com.example;
import org.bytedeco.javacpp.*;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import static org.bytedeco.javacpp.avcodec.*;
import static org.bytedeco.javacpp.avformat.*;
import static org.bytedeco.javacpp.avutil.*;
import static org.bytedeco.javacpp.avdevice.*;
import static org.bytedeco.javacpp.avformat.AVFormatContext.*;
public class Test {
public static void main(String[] args) throws Exception {
File dir = new File(System.getProperty("user.home"), "Desktop");
File file = new File(dir, "sample.3gp");
final RandomAccessFile raf = new RandomAccessFile(file, "r");
Loader.load(avcodec.class);
Loader.load(avformat.class);
Loader.load(avutil.class);
Loader.load(avdevice.class);
Loader.load(swscale.class);
Loader.load(swresample.class);
avcodec_register_all();
av_register_all();
avformat_network_init();
avdevice_register_all();
Read_packet_Pointer_BytePointer_int reader = new Read_packet_Pointer_BytePointer_int() {
@Override
public int call(Pointer pointer, BytePointer buf, int bufSize) {
try {
byte[] data = new byte[bufSize]; // this is inefficient, just use as a quick example
int read = raf.read(data);
if (read <= 0) {
System.out.println("EOF found.");
return AVERROR_EOF;
}
System.out.println("Successfully read " + read + " bytes of data.");
buf.position(0);
buf.put(data, 0, read);
return read;
} catch (Exception ex) {
ex.printStackTrace();
return -1;
}
}
};
Seek_Pointer_long_int seeker = new Seek_Pointer_long_int() {
@Override
public long call(Pointer pointer, long offset, int whence) {
try {
raf.seek(offset);
System.out.println("Successfully seeked to position " + offset + ".");
return offset;
} catch (IOException ex) {
return -1;
}
}
};
int inputBufferSize = 32768;
BytePointer inputBuffer = new BytePointer(av_malloc(inputBufferSize));
AVIOContext ioContext = avio_alloc_context(inputBuffer, inputBufferSize, 1, null, reader, null, seeker);
AVInputFormat format = av_find_input_format("3gp");
AVFormatContext formatContext = avformat_alloc_context();
formatContext.iformat(format);
formatContext.flags(formatContext.flags() | AVFMT_FLAG_CUSTOM_IO);
formatContext.pb(ioContext);
// This never returns. And I can never get result.
int result = avformat_open_input(formatContext, "", format, null);
// all clean-up code omitted for simplicity
}
}And below is my sample console output :
Successfully read 32768 bytes of data.
Successfully read 32768 bytes of data.
Successfully read 32768 bytes of data.
Successfully read 32768 bytes of data.
Successfully read 32768 bytes of data.
Successfully read 7240 bytes of data.
EOF found.I’ve checked the sum of bytes, which corresponds to the file size ; EOF is also hit, meaning the file is completely read. Actually I am a bit skeptical as why
avformat_open_input()would even read the entire file and still without returning ? There must be something wrong with what I am doing. Can any expert shed some lights or point me to the right direction ? I’m new tojavacvandffmpegand especially to programming withBuffers and stuff. Any help, suggestion or criticism is welcome. Thanks in advance.
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