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Autres articles (94)
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Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (6414)
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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


-
lavu/opt : Clarify the scope of AVOptions
24 avril 2024, par Andrew Sayerslavu/opt : Clarify the scope of AVOptions
See discussion on the mailing list :
https://ffmpeg.org/pipermail/ffmpeg-devel/2024-April/326054.htmlSigned-off-by : Michael Niedermayer <michael@niedermayer.cc>
-
What Is Ethical SEO & Why Does It Matter ?
7 mai 2024, par ErinDo you want to generate more revenue ?
Then, you need to ensure you have a steady stream of traffic flowing to your site.
Search engines like Google, Bing and Yahoo are powerful mediums you can use to scale your business.
Search engine optimisation (SEO) is the process of creating search engine-friendly content to draw in traffic to your website. But, if you aren’t careful, you could be crossing the line of ethical SEO into unethical SEO.
In this article, we break down what ethical SEO is, why it’s important in business and how you can implement effective SEO into your business while remaining ethical.
Let’s begin.
What is ethical SEO ?
Since the early days of the internet and search engines, business owners and marketers have tried using all kinds of SEO tactics to rank atop the search engines for relevant keywords.
The problem ?
Some of these practices are ethical, while others aren’t.
What exactly is ethical SEO ?
It’s the practice of optimising your website’s rankings in search engines by following search engine guidelines and prioritising user experience.
Ethical SEO is also referred to as “white hat SEO.”
On the other hand, businesses that break search engine rules and guidelines to “hack” their way to the top with faulty and questionable practices use unethical SEO, or “black hat SEO.”
Ethical SEO aims to achieve higher rankings in search engines through sustainable, legitimate and fair methods.
Black hat, or unethical SEO, aims to manipulate or “game” the system with deceptive strategies to bypass the search engine’s guidelines to rank higher.
The two core branches of ethical SEO include :
- Strategies that align with search engine guidelines.
- Accessibility to broad audiences.
Some examples of ethical SEO principles include :
- Natural link building
- Compliance with search engine guidelines
- Establishing great user experiences
- Creating reader-focused content
By sticking to the right guidelines and implementing proper SEO practices, businesses can establish ethical SEO to generate more traffic and grow their brands.
8 ethical SEO practices to implement
If you want to grow your organic search traffic, then there’s no doubt you’ll need to have some SEO knowledge.
While there are dozens of ways to “game” SEO, it’s best to stick to proven, ethical SEO techniques to improve your rankings.
Stick to these best practices to increase your rankings in the search engine results pages (SERPs), increase organic traffic and improve your website conversions.
1. Crafting high-quality content
The most important piece of any ethical SEO strategy is content.
Forget about rankings, keywords and links for a second.
Step back and think about why people go to Google, Bing and Yahoo in the first place.
They’re there looking for information. They have a question they need answered. That’s where you can come in and give them the answer they want.
How ? In the form of content.
The best long-term ethical SEO strategy is to create the highest-quality content possible. Crafting high-quality content should be where you focus 90% of your SEO efforts.
2. Following search engine guidelines
Once you’ve got a solid content creation strategy, where you’re producing in-depth, quality content, you need to ensure you’re following the guidelines and rules put in place by the major search engines.
This means you need to stay compliant with the best practices and guidelines laid out by the top search engines.
If you fail to follow these rules, you could be penalised, your content could be downgraded or removed from search engines, and you could even have your entire website flagged, impacting your entire organic search traffic from your site.
You need to ensure you align with the guidelines so you’re set up for long-term success with your SEO.
3. Conducting keyword research and optimisation
Now that we’ve covered content and guidelines, let’s talk about the technical stuff, starting with keywords.
In the early days of SEO (late 90s), just about anyone could rank a web page high by stuffing keywords all over the page.
While those black hat techniques used to work to “game” the system, it doesn’t work like that anymore. Google and other major search engines have much more advanced algorithms that can detect keyword stuffing and manipulation.
Keywords are still a major part of a successful SEO strategy. You can ethically incorporate keywords into your content (and you should) if you want to rank higher.
Your main goal with your content is to match it with the search intent. So, incorporating keywords should come naturally throughout your content. If you try to stuff in unnecessary keywords or use spammy techniques, you may not even rank at all and could harm your website’s rankings.
4. Incorporating natural link building
After you’ve covered content and keywords, it’s time to dive into links. Backlinks are any links that point back to your website from another website.
These are a crucial part of the SEO pie. Without them, it’s hard to rank high on Google. They work well because they tell Google your web page or website has authority on a subject matter.
But you could be penalised if you try to manipulate backlinks by purchasing them or spamming them from other websites.
Instead, you should aim to draw in natural backlinks by creating content that attracts them.
How ? There are several options :
- Content marketing
- Email outreach
- Brand mentions
- Public relations
- Ethical guest posting
Get involved in other people’s communities. Get on podcasts. Write guest posts. Connect with other brands. Provide value in your niche and create content worth linking to.
5. Respecting the intellectual property of other brands
Content creation is moving at lightspeed in the creator economy and social media era. For better or for worse, content is going viral every day. People share content, place their spin on it, revise it, optimise it, and spread it around the internet.
Unfortunately, this means the content is sometimes shared without the owner’s permission. Content is one form of intellectual property (IP).
If you share copyrighted material, you could face legal consequences.
6. Ensuring transparency
Transparency is one of the pillars of ethical marketing.
If you’re running the SEO in your company or an agency, you should always explain the SEO strategies and tactics you’re implementing to your stakeholders.
It’s best to lean on transparency and honesty to ensure your team knows you’re running operations ethically.
7. Implementing a great user experience
The final pillar of ethical SEO practices is offering a great user experience on your website.
Major search engines like Google are favouring user experience more and more every year. This means knowing how to track and analyse website metrics like page load times, time on page, pageviews, media plays and event tracking.
8. Use an ethical web analytics solution
Last but certainly not least. Tracking your website visitors ethically is key to maintaining SEO ethics.
You can do this by using an ethical web analytics solution like Matomo, Plausible or Fathom. All three are committed to respecting user privacy and offer ethical tracking of visitors.
We’re a bit biassed towards Matomo, of course, but for good reasons.
Matomo offers accurate, unsampled data along with advanced features like heatmaps, session recording, and A/B testing. These features enhance user experience and support ethical SEO practices by providing insights into user behaviour, helping optimise content.
Try Matomo for Free
Get the web insights you need, without compromising data accuracy.
6 unethical SEO practices to avoid
Now that we’ve covered the ethical SEO best practices let’s talk about what kind of unethical SEO practices you want to avoid.
Remember, SEO isn’t as easy to manipulate as it once was 20 years ago.
Algorithms are much more sophisticated now, and search engines are getting better at detecting fraudulent, scammy or unethical SEO practices every year.
Avoid these eight unethical SEO practices to ensure you can rank high in the long term :
1. Keyword stuffing
Keyword stuffing is probably the most common unethical SEO practice. This is where someone deliberately stuffs keywords onto a page to manipulate the search engines to rank a web page higher.
Where this is unethical isn’t always easy to detect, but in some cases, it is. It comes down to whether it’s relevant and natural or intentionally stuffing.
2. Cloaking
Cloaking is another unethical SEO practice where someone manipulates the information search engines see on their website.
For example, someone may show search engines one web page on their website, but when someone clicks on it in Google, they can direct someone to a completely different page. They do this by detecting the incoming request from the user agent and presenting different content.
3. Deceiving functionality
Another way companies are unethically implementing SEO tactics is by deceiving people with misleading information. For example, a website may claim to provide a free resource or directory but may intentionally lead visitors to paid products.
4. Fraudulent redirects
Another way to deceive or mislead searchers is by creating fraudulent redirects. A redirect is a way to take someone to a different web page when they click on another one. Redirects can be useful if a page is broken or outdated. However, they can be used to deceptively take someone to a website they didn’t intend to view.
5. Negative SEO
Negative SEO is the intentional attempt to harm a competitor’s search engine rankings through unethical tactics.
These tactics include duplicating their content or generating spammy links by creating low quality or irrelevant backlinks to their site.
6. Hidden text
Placing hidden text on a website typically has one purpose : keyword stuffing.
Instead of making it visible to users reading the content, websites will place invisible text or text that’s hard to read on a website to try to rank the content higher and manipulate the search engines.
3 reasons you need to implement ethical SEO
So, why should you ensure you only implement ethical SEO in your organic traffic strategy ?
It’s not just about what’s morally right or wrong. Implementing ethical SEO is the smartest long-term marketing strategy :
1. Better long-term SEO
Search engine optimisation is about implementing the “right” tactics to get your website to rank higher.
The funny thing is many people are trying to get quick fixes by manipulating search engines to see results now.
However, the ones who implement shady tactics and “hacks” to game the system almost always end up losing their rankings in the long term.
The best long-term SEO strategy is to do things ethically. Create content that helps people. Make higher quality content than your competitors. If you do those two things right, you’ll have better search traffic for years.
2. Great brand reputation
Not only is ethical SEO a great way to get long-term results, but it’s also a good way to maintain a solid brand reputation.
Reputation management is a crucial aspect of SEO. All it takes is one bad incident, and your SEO could be negatively impacted.
3. Lower chance of penalties
If you play by the rules, you have a lower risk of being penalised by Google.
The reality is that Google owns the search engine, not you. While we can benefit from the traffic generation of major search engines, you could lose all your rankings if you break their guidelines.
Track SEO data ethically with Matomo
Ethical SEO is all about :
- Serving your audience
- Getting better traffic in the long run
If you fail to follow ethical SEO practices, you could be de-ranked or have your reputation on the line.
However, if you implement ethical SEO, you could reap the rewards of a sustainable marketing strategy that helps you grow your traffic correctly and increase conversions in the long term.
If you’re ready to start implementing ethical SEO, you need to ensure you depend on an ethical web analytics solution like Matomo.
Unlike other web analytics solutions, Matomo prioritises user privacy, maintains transparent, ethical data collection practices, and does not sell user data to advertisers. Matomo provides 100% data ownership, ensuring that your data remains yours to own and control.
As the leading privacy-friendly web analytics solution globally, trusted by over 1 million websites, Matomo ensures :
- Accurate data without data sampling for confident insights and better results
- Privacy-friendly and GDPR-compliant web analytics
- Open-source access for transparency and creating a custom solution tailored to your needs
Try Matomo free for 21-days. No credit card required.
Try Matomo for Free
21 day free trial. No credit card required.
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