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DJ Z-trip - Victory Lap : The Obama Mix Pt. 2
15 septembre 2011
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Matmos - Action at a Distance
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The Rapture - Sister Saviour (Blackstrobe Remix)
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Mis à jour : Septembre 2011
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Introducing the Matomo Connector for Looker Studio (Formerly Google Data Studio)
26 janvier 2024, par Erin — CommunityExplore Matomo data like never before with the official Matomo Connector for Looker Studio. Matomo users can now securely display accurate web analytics data in Looker Studio for free.
Connect Matomo to Looker Studio (formerly known as Google Data Studio) in a few clicks and start building dashboards instantly. Get access to a range of data visualisation capabilities and chart types in Looker Studio’s easy-to-use interface.
Leave behind manual, error-prone spreadsheet entries and disparate data. With the Matomo Connector for Looker Studio, you get unified, automated reporting and interactive dashboards for faster insights and smoother collaboration.
What sets the official Matomo Connector for Looker Studio apart ?
Our open-source connector puts security first by providing a reliable connection without relying on third-party intermediaries. It’s free, with no hidden charges, and no limits on the number of users or Matomo instances. Connect as many instances as you need.
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The Matomo Connector for Looker Studio is a good fit for institutions and corporations using Looker Studio, NGOs handling multiple entities, marketing agencies with various clients, and small to medium-sized businesses with advanced data practices.
When is this connector not the best fit ?
If you prioritise privacy and compliance, this might not be the right fit. The Looker Studio app operates on Google servers, and while we don’t log or store any data, privacy considerations should be carefully evaluated. Transferring data, especially visitor data, to external platforms can have privacy implications.
Getting started
Check out our documentation for an easy setup.
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(C_UDP Socket Programming) How can I convert binary file to video format ?
30 avril 2024, par user24723398I am practicing UDP socket programming. My code's functions are below.


- 

- Connect Server-Client and send "hello" message each other (it is working).
- Then Server is sending video file to client (problem).






Transfer video file to client is working. But it is written in binary so I can't open the video.


So I try to use ffmpeg to convert the video, but it doesn't work.


Is there something wrong in my code ? How can I transfer a received file to a video file ?


My environment is MacOs.


Server.c (Server Code) :


#include 
#include 
#include 
#include <arpa></arpa>inet.h>
#include 
#include <sys></sys>socket.h>

#define PORT 8888
#define BUF_SIZE 256

int main(){
 int serv_sock;
 char message[BUF_SIZE];
 char buf[BUF_SIZE];
 int str_len;
 socklen_t clnt_adr_sz;

 struct sockaddr_in serv_adr, clnt_adr;
 
 //create socket
 serv_sock=socket(PF_INET, SOCK_DGRAM, 0);
 if(serv_sock == -1){
 perror("socket() error");
 exit(1);
 }
 
 //socket address
 memset(&serv_adr, 0, sizeof(serv_adr));
 serv_adr.sin_family=AF_INET;
 serv_adr.sin_addr.s_addr=htonl(INADDR_ANY);
 serv_adr.sin_port=htons(PORT);
 //binding socket
 if(bind(serv_sock, (struct sockaddr*)&serv_adr, sizeof(serv_adr)) == -1){
 perror("bind() error");
 exit(1);
 }
 
 while(1){
 clnt_adr_sz=sizeof(clnt_adr);
 str_len=recvfrom(serv_sock, message, BUF_SIZE, 0, (struct sockaddr *)&clnt_adr, &clnt_adr_sz);
 if (str_len < 0) {
 perror("recvfrom error");
 exit(1);
 }
 
 char hello_message[] = "hello i am server";
 if (sendto(serv_sock, hello_message, strlen(hello_message), 0, (struct sockaddr *)&clnt_adr, clnt_adr_sz) < 0) {
 perror("sendto error");
 exit(1);
 }
 
 //print message
 message[str_len] = '\0';
 printf("client say: %s\n", message);
 
 char buf[BUF_SIZE];
 ssize_t bytes_read;
 // sending viedo file
 printf("sending video file...\n");
 size_t fsize;
 
 //video file
 FILE *file;
 char *filename = "video.mp4";
 // open video file
 file = fopen(filename, "rb");
 if (file == NULL) {
 perror("File opening failed");
 exit(EXIT_FAILURE);
 }
 //calculate video file memory
 fseek(file, 0, SEEK_END);
 fsize = ftell(file);
 fseek(file,0,SEEK_SET);
 
 size_t size = htonl(fsize);
 int nsize =0;
 
 while(nsize!=fsize){
 int fpsize = fread(buf,1, BUF_SIZE, file);
 nsize += fpsize;
 if (sendto(serv_sock, &size, sizeof(size), 0, (struct sockaddr *)&clnt_adr, clnt_adr_sz) < 0) {
 perror("sendto");
 exit(EXIT_FAILURE); 
 }
 fclose(file);
 /*
 while ((bytes_read = fread(buf, 1, BUF_SIZE, file)) > 0) {
 if (sendto(serv_sock, buf, bytes_read, 0,
 (struct sockaddr *)&clnt_adr, clnt_adr_sz) < 0) {
 perror("sendto");
 exit(EXIT_FAILURE);
 } 
 }
 */
 } 
 }
 close(serv_sock);
 return 0;
}


Client.c (Client code)


#include 
#include 
#include 
#include <arpa></arpa>inet.h>
#include 
#include <sys></sys>socket.h>

#define BUFSIZE 256
#define PORT 8888

int main(){
 int sock;
 char message[BUFSIZE];
 int str_len;
 socklen_t adr_sz;

 struct sockaddr_in serv_addr, client_addr; 
 
 sock = socket(PF_INET, SOCK_DGRAM, 0);
 if(sock == -1){
 printf("socket() error\n");
 exit(1);
 }

 memset(&serv_addr, 0, sizeof(serv_addr));
 serv_addr.sin_family = AF_INET;
 serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
 serv_addr.sin_port = htons(PORT);

 char hello_message[] = "hello i am client";
 sendto(sock, hello_message, strlen(hello_message), 0, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
 adr_sz = sizeof(client_addr);
 str_len=recvfrom(sock,message,BUFSIZE,0,(struct sockaddr*)&client_addr,&adr_sz);
 
 message[str_len] = '\0';
 printf("client say: %s\n", message);
 
 /*
 char buf[BUFSIZE];
 ssize_t bytes_received;
 socklen_t serv_len = sizeof(serv_addr);
 while ((bytes_received = recvfrom(sock, buf, BUFSIZE, 0,
 (struct sockaddr *)&serv_addr, &serv_len)) > 0) {
 fwrite(buf, 1, bytes_received, file);
 }
 */
 
 FILE *file = fopen("received_test.mp4", "wb");

 int nbyte = BUFSIZE;
 while(nbyte>= BUFSIZE){
 nbyte = recvfrom(sock, message, BUFSIZE, 0, (struct sockaddr*)&serv_addr, &adr_sz);
 fwrite(message, sizeof(char), nbyte, file);
 }

 if (file == NULL) {
 perror("File opening failed");
 exit(EXIT_FAILURE);
 }

 fclose(file);
 close(sock);
 printf("File received successfully\n");
 
 return 0;
}


I try to convert the binary file to an
.mp4file using ffmpeg
but it doesn't work :

ffmpeg -i received_test.mp4 output.mp4
ffmpeg version 7.0 Copyright (c) 2000-2024 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.3.9.4)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.0 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenvino --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
 libavutil 59. 8.100 / 59. 8.100
 libavcodec 61. 3.100 / 61. 3.100
 libavformat 61. 1.100 / 61. 1.100
 libavdevice 61. 1.100 / 61. 1.100
 libavfilter 10. 1.100 / 10. 1.100
 libswscale 8. 1.100 / 8. 1.100
 libswresample 5. 1.100 / 5. 1.100
 libpostproc 58. 1.100 / 58. 1.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x12a62bdb0] Format mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection possible!
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x12a62bdb0] moov atom not found
[in#0 @ 0x12b0043c0] Error opening input: Invalid data found when processing input
Error opening input file received_test.mp4.
Error opening input files: Invalid data found when processing input


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