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• Converting a voice recording into an mp3

  21 juillet 2023, par Raphael M

  For a vue.js messaging project, I'm using the wavesurfer.js library to record voice messages. However Google chrome gives me an audio/webm blob and Safari gives me an audio/mp4 blob.

  


  I'm trying to find a solution to transcode the blob into audio/mp3. I've tried several methods, including ffmpeg. However, ffmpeg gives me an error when compiling "npm run dev" : "Can't resolve '/node_modules/@ffmpeg/core/dist/ffmpeg-core.js'".

  


  "@ffmpeg/core": "^0.11.0",
"@ffmpeg/ffmpeg": "^0.11.6"


  


  I tried to downgrade ffmpeg

  


  "@ffmpeg/core": "^0.9.0",
"@ffmpeg/ffmpeg": "^0.9.8"


  


  I no longer get the error message when compiling, but when I want to convert my audio stream, the console displays a problem with SharedBuffer : "Uncaught (in promise) ReferenceError : SharedArrayBuffer is not defined".

  


  Here's my complete code below.
Is there a reliable way of transcoding the audio stream into mp3 ?

  


  Can you give me an example ?

  


  Thanks

  


  <template>&#xA;  <div class="left-panel">&#xA;    <header class="radial-blue">&#xA;      <div class="container">&#xA;        <h1 class="mb-30">Posez votre premi&#xE8;re question &#xE0; nos th&#xE9;rapeutes</h1>&#xA;        <p><b>Attention</b>, vous disposez seulement de 2 messages. Veillez &#xE0; les utiliser de mani&#xE8;re judicieuse !</p>&#xA;        <div class="available-messages">&#xA;          <div class="item disabled">&#xA;            <span>Message 1</span>&#xA;          </div>&#xA;          <div class="item">&#xA;            <span>Message 2</span>&#xA;          </div>&#xA;        </div>&#xA;      </div>&#xA;    </header>&#xA;  </div>&#xA;  <div class="right-panel">&#xA;    <div class="messagerie bg-light">&#xA;      <messaging ref="messagingComponent"></messaging>&#xA;      <footer>&#xA;        <button type="button"><img src="http://stackoverflow.com/assets/backoffice/images/record-start.svg" style='max-width: 300px; max-height: 300px' /></button>&#xA;        <div class="loading-animation">&#xA;          <img src="http://stackoverflow.com/assets/backoffice/images/record-loading.svg" style='max-width: 300px; max-height: 300px' />&#xA;        </div>&#xA;        <button type="button"><img src="http://stackoverflow.com/assets/backoffice/images/record-stop.svg" style='max-width: 300px; max-height: 300px' /></button>&#xA;        <div class="textarea gradient text-dark">&#xA;          <textarea placeholder="Posez votre question"></textarea>&#xA;        </div>&#xA;        <div class="loading-text">Chargement de votre microphone en cours...</div>&#xA;        <div class="loading-text">Envoi de votre message en cours...</div>&#xA;        <div ref="visualizer"></div>&#xA;        <button type="button"><img src="http://stackoverflow.com/assets/backoffice/images/send.svg" style='max-width: 300px; max-height: 300px' /></button>&#xA;        <div>&#xA;          {{ formatTimer() }}&#xA;        </div>&#xA;      </footer>&#xA;    </div>&#xA;  </div>&#xA;</template>&#xA;&#xA;<code class="echappe-js">&lt;script&gt;&amp;#xA;import Messaging from &quot;./Messaging.vue&quot;;&amp;#xA;import { createFFmpeg, fetchFile } from &amp;#x27;@ffmpeg/ffmpeg&amp;#x27;;&amp;#xA;&amp;#xA;export default {&amp;#xA;  data() {&amp;#xA;    return {&amp;#xA;      isMicrophoneLoading: false,&amp;#xA;      isSubmitLoading: false,&amp;#xA;      isMobile: false,&amp;#xA;      isMessagerie: false,&amp;#xA;      isRecording: false,&amp;#xA;      audioUrl: &amp;#x27;&amp;#x27;,&amp;#xA;      messageText: &amp;#x27;&amp;#x27;,&amp;#xA;      message:null,&amp;#xA;      wavesurfer: null,&amp;#xA;      access:(this.isMobile?&amp;#x27;denied&amp;#x27;:&amp;#x27;granted&amp;#x27;),&amp;#xA;      maxMinutes: 5,&amp;#xA;      orangeTimer: 3,&amp;#xA;      redTimer: 4,&amp;#xA;      timer: 0,&amp;#xA;      timerInterval: null,&amp;#xA;      ffmpeg: null,&amp;#xA;    };&amp;#xA;  },&amp;#xA;  components: {&amp;#xA;    Messaging,&amp;#xA;  },&amp;#xA;  mounted() {&amp;#xA;    this.checkScreenSize();&amp;#xA;    window.addEventListener(&amp;#x27;resize&amp;#x27;, this.checkScreenSize);&amp;#xA;&amp;#xA;    if(!this.isMobile)&amp;#xA;    {&amp;#xA;      this.$moment.locale(&amp;#x27;fr&amp;#x27;);&amp;#xA;      window.addEventListener(&amp;#x27;beforeunload&amp;#x27;, (event) =&gt; {&amp;#xA;        if (this.isMessagerie) {&amp;#xA;          event.preventDefault();&amp;#xA;          event.returnValue = &amp;#x27;&amp;#x27;;&amp;#xA;        }&amp;#xA;      });&amp;#xA;&amp;#xA;      this.initializeWaveSurfer();&amp;#xA;    }&amp;#xA;  },&amp;#xA;  beforeUnmount() {&amp;#xA;    window.removeEventListener(&amp;#x27;resize&amp;#x27;, this.checkScreenSize);&amp;#xA;  },&amp;#xA;  methods: {&amp;#xA;    checkScreenSize() {&amp;#xA;      this.isMobile = window.innerWidth &lt; 1200;&amp;#xA;&amp;#xA;      const windowHeight = window.innerHeight;&amp;#xA;      const navbarHeight = this.$navbarHeight;&amp;#xA;      let padding = parseInt(navbarHeight &amp;#x2B;181);&amp;#xA;&amp;#xA;      const messageListHeight = windowHeight - padding;&amp;#xA;      this.$refs.messagingComponent.$refs.messageList.style.height = messageListHeight &amp;#x2B; &amp;#x27;px&amp;#x27;;&amp;#xA;    },&amp;#xA;    showMessagerie() {&amp;#xA;      this.isMessagerie = true;&amp;#xA;      this.$refs.messagingComponent.scrollToBottom();&amp;#xA;    },&amp;#xA;    checkMicrophoneAccess() {&amp;#xA;      if (navigator.mediaDevices &amp;amp;&amp;amp; navigator.mediaDevices.getUserMedia) {&amp;#xA;&amp;#xA;        return navigator.mediaDevices.getUserMedia({audio: true})&amp;#xA;            .then(function (stream) {&amp;#xA;              stream.getTracks().forEach(function (track) {&amp;#xA;                track.stop();&amp;#xA;              });&amp;#xA;              return true;&amp;#xA;            })&amp;#xA;            .catch(function (error) {&amp;#xA;              console.error(&amp;#x27;Erreur lors de la demande d\&amp;#x27;acc&amp;#xE8;s au microphone:&amp;#x27;, error);&amp;#xA;              return false;&amp;#xA;            });&amp;#xA;      } else {&amp;#xA;        console.error(&amp;#x27;getUserMedia n\&amp;#x27;est pas support&amp;#xE9; par votre navigateur.&amp;#x27;);&amp;#xA;        return false;&amp;#xA;      }&amp;#xA;    },&amp;#xA;    initializeWaveSurfer() {&amp;#xA;      this.wavesurfer = this.$wavesurfer.create({&amp;#xA;        container: &amp;#x27;#visualizer&amp;#x27;,&amp;#xA;        barWidth: 3,&amp;#xA;        barHeight: 1.5,&amp;#xA;        height: 46,&amp;#xA;        responsive: true,&amp;#xA;        waveColor: &amp;#x27;rgba(108,115,202,0.3)&amp;#x27;,&amp;#xA;        progressColor: &amp;#x27;rgba(108,115,202,1)&amp;#x27;,&amp;#xA;        cursorColor: &amp;#x27;transparent&amp;#x27;&amp;#xA;      });&amp;#xA;&amp;#xA;      this.record = this.wavesurfer.registerPlugin(this.$recordPlugin.create());&amp;#xA;    },&amp;#xA;    startRecording() {&amp;#xA;      const _this = this;&amp;#xA;      this.isMicrophoneLoading = true;&amp;#xA;&amp;#xA;      setTimeout(() =&gt;&amp;#xA;      {&amp;#xA;        _this.checkMicrophoneAccess().then(function (accessible)&amp;#xA;        {&amp;#xA;          if (accessible) {&amp;#xA;            _this.record.startRecording();&amp;#xA;&amp;#xA;            _this.record.once(&amp;#x27;startRecording&amp;#x27;, () =&gt; {&amp;#xA;              _this.isMicrophoneLoading = false;&amp;#xA;              _this.isRecording = true;&amp;#xA;              _this.updateChildMessage( &amp;#x27;server&amp;#x27;, &amp;#x27;Allez-y ! Vous pouvez enregistrer votre message audio maintenant. La dur&amp;#xE9;e maximale autoris&amp;#xE9;e pour votre enregistrement est de 5 minutes.&amp;#x27;, &amp;#x27;text&amp;#x27;, &amp;#x27;&amp;#x27;, &amp;#x27;Message automatique&amp;#x27;);&amp;#xA;              _this.startTimer();&amp;#xA;            });&amp;#xA;          } else {&amp;#xA;            _this.isRecording = false;&amp;#xA;            _this.isMicrophoneLoading = false;&amp;#xA;            _this.$swal.fire({&amp;#xA;              title: &amp;#x27;Microphone non d&amp;#xE9;tect&amp;#xE9;&amp;#x27;,&amp;#xA;              html: &amp;#x27;&lt;p&gt;Le microphone de votre appareil est inaccessible ou l\&amp;#x27;acc&amp;#xE8;s a &amp;#xE9;t&amp;#xE9; refus&amp;#xE9;.&lt;/p&gt;&lt;p&gt;Merci de v&amp;#xE9;rifier les param&amp;#xE8;tres de votre navigateur afin de v&amp;#xE9;rifier les autorisations de votre microphone.&lt;/p&gt;&amp;#x27;,&amp;#xA;              footer: &amp;#x27;&lt;a href='http://stackoverflow.com/contact'&gt;Vous avez besoin d\&amp;#x27;aide ?&lt;/a&gt;&amp;#x27;,&amp;#xA;            });&amp;#xA;          }&amp;#xA;        });&amp;#xA;      }, 100);&amp;#xA;    },&amp;#xA;    stopRecording() {&amp;#xA;      this.stopTimer();&amp;#xA;      this.isRecording = false;&amp;#xA;      this.isSubmitLoading = true;&amp;#xA;      this.record.stopRecording();&amp;#xA;&amp;#xA;      this.record.once(&amp;#x27;stopRecording&amp;#x27;, () =&gt; {&amp;#xA;        const blobUrl = this.record.getRecordedUrl();&amp;#xA;        fetch(blobUrl).then(response =&gt; response.blob()).then(blob =&gt; {&amp;#xA;          this.uploadAudio(blob);&amp;#xA;        });&amp;#xA;      });&amp;#xA;    },&amp;#xA;    startTimer() {&amp;#xA;      this.timerInterval = setInterval(() =&gt; {&amp;#xA;        this.timer&amp;#x2B;&amp;#x2B;;&amp;#xA;        if (this.timer === this.maxMinutes * 60) {&amp;#xA;          this.stopRecording();&amp;#xA;        }&amp;#xA;      }, 1000);&amp;#xA;    },&amp;#xA;    stopTimer() {&amp;#xA;      clearInterval(this.timerInterval);&amp;#xA;      this.timer = 0;&amp;#xA;    },&amp;#xA;    formatTimer() {&amp;#xA;      const minutes = Math.floor(this.timer / 60);&amp;#xA;      const seconds = this.timer % 60;&amp;#xA;      const formattedMinutes = minutes &lt; 10 ? `0${minutes}` : minutes;&amp;#xA;      const formattedSeconds = seconds &lt; 10 ? `0${seconds}` : seconds;&amp;#xA;      return `${formattedMinutes}:${formattedSeconds}`;&amp;#xA;    },&amp;#xA;    async uploadAudio(blob)&amp;#xA;    {&amp;#xA;      const format = blob.type === &amp;#x27;audio/webm&amp;#x27; ? &amp;#x27;webm&amp;#x27; : &amp;#x27;mp4&amp;#x27;;&amp;#xA;&amp;#xA;      // Convert the blob to MP3&amp;#xA;      const mp3Blob = await this.convertToMp3(blob, format);&amp;#xA;&amp;#xA;      const s3 = new this.$AWS.S3({&amp;#xA;        accessKeyId: &amp;#x27;xxx&amp;#x27;,&amp;#xA;        secretAccessKey: &amp;#x27;xxx&amp;#x27;,&amp;#xA;        region: &amp;#x27;eu-west-1&amp;#x27;&amp;#xA;      });&amp;#xA;&amp;#xA;      var currentDate = new Date();&amp;#xA;      var filename = currentDate.getDate().toString() &amp;#x2B; &amp;#x27;-&amp;#x27; &amp;#x2B; currentDate.getMonth().toString() &amp;#x2B; &amp;#x27;-&amp;#x27; &amp;#x2B; currentDate.getFullYear().toString() &amp;#x2B; &amp;#x27;--&amp;#x27; &amp;#x2B; currentDate.getHours().toString() &amp;#x2B; &amp;#x27;-&amp;#x27; &amp;#x2B; currentDate.getMinutes().toString() &amp;#x2B; &amp;#x27;.mp4&amp;#x27;;&amp;#xA;&amp;#xA;      const params = {&amp;#xA;        Bucket: &amp;#x27;xxx/audio&amp;#x27;,&amp;#xA;        Key: filename,&amp;#xA;        Body: mp3Blob,&amp;#xA;        ACL: &amp;#x27;public-read&amp;#x27;,&amp;#xA;        ContentType: &amp;#x27;audio/mp3&amp;#x27;&amp;#xA;      }&amp;#xA;&amp;#xA;      s3.upload(params, (err, data) =&gt; {&amp;#xA;        if (err) {&amp;#xA;          console.error(&amp;#x27;Error uploading audio:&amp;#x27;, err)&amp;#xA;        } else {&amp;#xA;          const currentDate = this.$moment();&amp;#xA;          const timestamp = currentDate.format(&amp;#x27;dddd DD MMMM YYYY HH:mm&amp;#x27;);&amp;#xA;&amp;#xA;          this.updateChildMessage( &amp;#x27;client&amp;#x27;, &amp;#x27;&amp;#x27;, &amp;#x27;audio&amp;#x27;, mp3Blob, timestamp);&amp;#xA;          this.isSubmitLoading = false;&amp;#xA;        }&amp;#xA;      });&amp;#xA;    },&amp;#xA;    async convertToMp3(blob, format) {&amp;#xA;      const ffmpeg = createFFmpeg({ log: true });&amp;#xA;      await ffmpeg.load();&amp;#xA;&amp;#xA;      const inputPath = &amp;#x27;input.&amp;#x27; &amp;#x2B; format;&amp;#xA;      const outputPath = &amp;#x27;output.mp3&amp;#x27;;&amp;#xA;&amp;#xA;      ffmpeg.FS(&amp;#x27;writeFile&amp;#x27;, inputPath, await fetchFile(blob));&amp;#xA;&amp;#xA;      await ffmpeg.run(&amp;#x27;-i&amp;#x27;, inputPath, &amp;#x27;-acodec&amp;#x27;, &amp;#x27;libmp3lame&amp;#x27;, outputPath);&amp;#xA;&amp;#xA;      const mp3Data = ffmpeg.FS(&amp;#x27;readFile&amp;#x27;, outputPath);&amp;#xA;      const mp3Blob = new Blob([mp3Data.buffer], { type: &amp;#x27;audio/mp3&amp;#x27; });&amp;#xA;&amp;#xA;      ffmpeg.FS(&amp;#x27;unlink&amp;#x27;, inputPath);&amp;#xA;      ffmpeg.FS(&amp;#x27;unlink&amp;#x27;, outputPath);&amp;#xA;&amp;#xA;      return mp3Blob;&amp;#xA;    },&amp;#xA;    sendMessage() {&amp;#xA;      this.isSubmitLoading = true;&amp;#xA;      if (this.messageText.trim() !== &amp;#x27;&amp;#x27;) {&amp;#xA;        const emmet = &amp;#x27;client&amp;#x27;;&amp;#xA;        const text = this.escapeHTML(this.messageText)&amp;#xA;            .replace(/\n/g, &amp;#x27;&lt;br&gt;&amp;#x27;);&amp;#xA;&amp;#xA;        const currentDate = this.$moment();&amp;#xA;        const timestamp = currentDate.format(&amp;#x27;dddd DD MMMM YYYY HH:mm&amp;#x27;);&amp;#xA;&amp;#xA;        this.$nextTick(() =&gt; {&amp;#xA;          this.messageText = &amp;#x27;&amp;#x27;;&amp;#xA;&amp;#xA;          const textarea = document.getElementById(&amp;#x27;messageTextarea&amp;#x27;);&amp;#xA;          if (textarea) {&amp;#xA;            textarea.scrollTop = 0;&amp;#xA;            textarea.scrollLeft = 0;&amp;#xA;          }&amp;#xA;        });&amp;#xA;&amp;#xA;        this.updateChildMessage(emmet, text, &amp;#x27;text&amp;#x27;, &amp;#x27;&amp;#x27;, timestamp);&amp;#xA;        this.isSubmitLoading = false;&amp;#xA;      }&amp;#xA;    },&amp;#xA;    escapeHTML(text) {&amp;#xA;      const map = {&amp;#xA;        &amp;#x27;&amp;amp;&amp;#x27;: &amp;#x27;&amp;amp;amp;&amp;#x27;,&amp;#xA;        &amp;#x27;&lt;&amp;#x27;: &amp;#x27;&amp;amp;lt;&amp;#x27;,&amp;#xA;        &amp;#x27;&gt;&amp;#x27;: &amp;#x27;&amp;amp;gt;&amp;#x27;,&amp;#xA;        &amp;#x27;&quot;&amp;#x27;: &amp;#x27;&amp;amp;quot;&amp;#x27;,&amp;#xA;        &quot;&amp;#x27;&quot;: &amp;#x27;&amp;amp;#039;&amp;#x27;,&amp;#xA;        &quot;`&quot;: &amp;#x27;&amp;amp;#x60;&amp;#x27;,&amp;#xA;        &quot;/&quot;: &amp;#x27;&amp;amp;#x2F;&amp;#x27;&amp;#xA;      };&amp;#xA;      return text.replace(/[&amp;amp;&lt;&gt;&quot;&amp;#x27;`/]/g, (match) =&gt; map[match]);&amp;#xA;    },&amp;#xA;    updateChildMessage(emmet, text, type, blob, timestamp) {&amp;#xA;      const newMessage = {&amp;#xA;        id: this.$refs.messagingComponent.lastMessageId &amp;#x2B; 1,&amp;#xA;        emmet: emmet,&amp;#xA;        text: text,&amp;#xA;        type: type,&amp;#xA;        blob: blob,&amp;#xA;        timestamp: timestamp&amp;#xA;      };&amp;#xA;&amp;#xA;      this.$refs.messagingComponent.updateMessages(newMessage);&amp;#xA;    }&amp;#xA;  },&amp;#xA;};&amp;#xA;&lt;/script&gt;&#xA;

  


• What is Behavioural Segmentation and Why is it Important ?

  28 septembre 2023, par Erin — Analytics Tips

  Amidst the dynamic landscape of web analytics, understanding customers has grown increasingly vital for businesses to thrive. While traditional demographic-focused strategies possess merit, they need to uncover the nuanced intricacies of individual online behaviours and preferences. As customer expectations evolve in the digital realm, enterprises must recalibrate their approaches to remain relevant and cultivate enduring digital relationships.

  In this context, the surge of technology and advanced data analysis ushers in a marketing revolution : behavioural segmentation. Businesses can unearth invaluable insights by meticulously scrutinising user actions, preferences and online interactions. These insights lay the foundation for precisely honed, high-performing, personalised campaigns. The era dominated by blanket, catch-all marketing strategies is yielding to an era of surgical precision and tailored engagement. 

  While the insights from user behaviours empower businesses to optimise customer experiences, it’s essential to strike a delicate balance between personalisation and respecting user privacy. Ethical use of behavioural data ensures that the power of segmentation is wielded responsibly and in compliance, safeguarding user trust while enabling businesses to thrive in the digital age.

  What is behavioural segmentation ?

  Behavioural segmentation is a crucial concept in web analytics and marketing. It involves categorising individuals or groups of users based on their online behaviour, actions and interactions with a website. This segmentation method focuses on understanding how users engage with a website, their preferences and their responses to various stimuli. Behavioural segmentation classifies users into distinct segments based on their online activities, such as the pages they visit, the products they view, the actions they take and the time they spend on a site.

  Behavioural segmentation plays a pivotal role in web analytics for several reasons :

  1. Enhanced personalisation :

  Understanding user behaviour enables businesses to personalise online experiences. This aids with delivering tailored content and recommendations to boost conversion, customer loyalty and customer satisfaction.

  2. Improved user experience :

  Behavioural segmentation optimises user interfaces (UI) and navigation by identifying user paths and pain points, enhancing the level of engagement and retention.

  3. Targeted marketing :

  Behavioural segmentation enhances marketing efficiency by tailoring campaigns to user behaviour. This increases the likelihood of interest in specific products or services.

  4. Conversion rate optimisation :

  Analysing behavioural data reveals factors influencing user decisions, enabling website optimisation for a streamlined purchasing process and higher conversion rates.

  5. Data-driven decision-making :

  Behavioural segmentation empowers data-driven decisions. It identifies trends, behavioural patterns and emerging opportunities, facilitating adaptation to changing user preferences and market dynamics.

  6. Ethical considerations :

  Behavioural segmentation provides valuable insights but raises ethical concerns. User data collection and use must prioritise transparency, privacy and responsible handling to protect individuals’ rights.

  The significance of ethical behavioural segmentation will be explored more deeply in a later section, where we will delve into the ethical considerations and best practices for collecting, storing and utilising behavioural data in web analytics. It’s essential to strike a balance between harnessing the power of behavioural segmentation for business benefits and safeguarding user privacy and data rights in the digital age.

  

  Different types of behavioural segments with examples

  1. Visit-based segments : These segments hinge on users’ visit patterns. Analyse visit patterns, compare first-time visitors to returning ones, or compare users landing on specific pages to those landing on others.
     • Example : The real estate website Zillow can analyse how first-time visitors and returning users behave differently. By understanding these patterns, Zillow can customise its website for each group. For example, they can highlight featured listings and provide navigation tips for first-time visitors while offering personalised recommendations and saved search options for returning users. This could enhance user satisfaction and boost the chances of conversion.
  2. Interaction-based segments : Segments can be created based on user interactions like special events or goals completed on the site.
     • Example : Airbnb might use this to understand if users who successfully book accommodations exhibit different behaviours than those who don’t. This insight could guide refinements in the booking process for improved conversion rates.
  3. Campaign-based segments : Beyond tracking visit numbers, delve into usage differences of visitors from specific sources or ad campaigns for deeper insights.
     • Example : Nike might analyse user purchase behaviour from various traffic sources (referral websites, organic, direct, social media and ads). This informs marketing segmentation adjustments, focusing on high-performance channels. It also customises the website experience for different traffic sources, optimising content, promotions and navigation. This data-driven approach could boost user experiences and maximise marketing impact for improved brand engagement and sales conversions.
  4. Ecommerce segments : Separate users based on purchases, even examining the frequency of visits linked to specific products. Segment heavy users versus light users. This helps uncover diverse customer types and browsing behaviours.
     • Example : Amazon could create segments to differentiate between visitors who made purchases and those who didn’t. This segmentation could reveal distinct usage patterns and preferences, aiding Amazon in tailoring its recommendations and product offerings.
  5. Demographic segments : Build segments based on browser language or geographic location, for instance, to comprehend how user attributes influence site interactions.
     • Example : Netflix can create user segments based on demographic factors like geographic location to gain insight into how a visitor’s location can influence content preferences and viewing behaviour. This approach could allow for a more personalised experience.
  6. Technographic segments : Segment users by devices or browsers, revealing variations in site experience and potential platform-specific issues or user attitudes.
     • Example : Google could create segments based on users’ devices (e.g., mobile, desktop) to identify potential issues in rendering its search results. This information could be used to guide Google in providing consistent experiences regardless of device.

  

  The importance of ethical behavioural segmentation

  Respecting user privacy and data protection is crucial. Matomo offers features that align with ethical segmentation practices. These include :

  • Anonymization : Matomo allows for data anonymization, safeguarding individual identities while providing valuable insights.
  • GDPR compliance : Matomo is GDPR compliant, ensuring that user data is handled following European data protection regulations.
  • Data retention and deletion : Matomo enables businesses to set data retention policies and delete user data when it’s no longer needed, reducing the risk of data misuse.
  • Secured data handling : Matomo employs robust security measures to protect user data, reducing the risk of data breaches.

  Real-world examples of ethical behavioural segmentation :

  1. Content publishing : A leading news website could utilise data anonymization tools to ethically monitor user engagement. This approach allows them to optimise content delivery based on reader preferences while ensuring the anonymity and privacy of their target audience.
  2. Non-profit organisations : A charity organisation could embrace granular user control features. This could be used to empower its donors to manage their data preferences, building trust and loyalty among supporters by giving them control over their personal information.

  

  Examples of effective behavioural segmentation

  Companies are constantly using behavioural insights to engage their audiences effectively. In this section, we’ll delve into real-world examples showcasing how top companies use behavioural segmentation to enhance their marketing efforts.

  

  1. Coca-Cola’s behavioural insights for marketing strategy : Coca-Cola employs behavioural segmentation to evaluate its advertising campaigns. Through analysing user engagement across TV commercials, social media promotions and influencer partnerships, Coca-Cola’s marketing team can discover that video ads shared by influencers generate the highest ROI and web traffic.

     This insight guides the reallocation of resources, leading to increased sales and a more effective advertising strategy.

  2. eBay’s custom conversion approach : eBay excels in conversion optimisation through behavioural segmentation. When users abandon carts, eBay’s dynamic system sends personalised email reminders featuring abandoned items and related recommendations tailored to user interests and past purchase decisions.

     This strategy revives sales, elevates conversion rates and sparks engagement. eBay’s adeptness in leveraging behavioural insights transforms user experience, steering a customer journey toward conversion.

  3. Sephora’s data-driven conversion enhancement : Data analysts can use Sephora’s behavioural segmentation strategy to fuel revenue growth through meticulous data analysis. By identifying a dedicated subset of loyal customers who exhibit a consistent preference for premium skincare products, data analysts enable Sephora to customise loyalty programs.

     These personalised rewards programs provide exclusive discounts and early access to luxury skincare releases, resulting in heightened customer engagement and loyalty. The data-driven precision of this approach directly contributes to amplified revenue from this specific customer segment.

  Examples of the do’s and don’ts of behavioural segmentation 

  

  Behavioural segmentation is a powerful marketing and data analysis tool, but its success hinges on ethical and responsible practices. In this section, we will explore real-world examples of the do’s and don’ts of behavioural segmentation, highlighting companies that have excelled in their approach and those that have faced challenges due to lapses in ethical considerations.

  Do’s of behavioural segmentation :

  • Personalised messaging :
    • Example : Spotify
      • Spotify’s success lies in its ability to use behavioural data to curate personalised playlists and user recommendations, enhancing its music streaming experience.
  • Transparency :
    • Example : Basecamp
      • Basecamp’s transparency in sharing how user data is used fosters trust. They openly communicate data practices, ensuring users are informed and comfortable.
  • Anonymization
    • Example : Matomo’s anonymization features
      • Matomo employs anonymization features to protect user identities while providing valuable insights, setting a standard for responsible data handling.
  • Purpose limitation :
    • Example : Proton Mail
      • Proton Mail strictly limits the use of user data to email-related purposes, showcasing the importance of purpose-driven data practices.
  • Dynamic content delivery : 
    • Example : LinkedIn
      • LinkedIn uses behavioural segmentation to dynamically deliver job recommendations, showcasing the potential for relevant content delivery.
  • Data security :
    • Example : Apple
      • Apple’s stringent data security measures protect user information, setting a high bar for safeguarding sensitive data.
  • Adherence to regulatory compliance : 
    • Example : Matomo’s regulatory compliance features
      • Matomo’s regulatory compliance features ensure that businesses using the platform adhere to data protection regulations, further promoting responsible data usage.

  Don’ts of behavioural segmentation :

  • Ignoring changing regulations
    • Example : Equifax
      • Equifax faced major repercussions for neglecting evolving regulations, resulting in a data breach that exposed the sensitive information of millions.
  • Sensitive attributes
    • Example : Twitter
      • Twitter faced criticism for allowing advertisers to target users based on sensitive attributes, sparking concerns about user privacy and data ethics.
  • Data sharing without consent
    • Example : Meta & Cambridge Analytica
      • The Cambridge Analytica scandal involving Meta (formerly Facebook) revealed the consequences of sharing user data without clear consent, leading to a breach of trust.
  • Lack of control
    • Example : Uber
      • Uber faced backlash for its poor data security practices and a lack of control over user data, resulting in a data breach and compromised user information.
  • Don’t be creepy with invasive personalisation
    • Example : Offer Moment
      • Offer Moment’s overly invasive personalisation tactics crossed ethical boundaries, unsettling users and eroding trust.

  These examples are valuable lessons, emphasising the importance of ethical and responsible behavioural segmentation practices to maintain user trust and regulatory compliance in an increasingly data-driven world.

  Continue the conversation

  Diving into customer behaviours, preferences and interactions empowers businesses to forge meaningful connections with their target audience through targeted marketing segmentation strategies. This approach drives growth and fosters exceptional customer experiences, as evident from the various common examples spanning diverse industries.

  In the realm of ethical behavioural segmentation and regulatory compliance, Matomo is a trusted partner. Committed to safeguarding user privacy and data integrity, our advanced web analytics solution empowers your business to harness the power of behavioral segmentation, all while upholding the highest standards of compliance with stringent privacy regulations.

  To gain deeper insight into your visitors and execute impactful marketing campaigns, explore how Matomo can elevate your efforts. Try Matomo free for 21-days, no credit card required. 

• ffmpeg command to add moving text watermark to video [closed]

  13 octobre 2023, par Imran Khan
  


  


          // Constants for watermark movement, direction change intervals, fade intervals, and overlap duration
        const MOVE_SPEED = 3;
        const DIRECTION_CHANGE_MIN = 3000;
        const DIRECTION_CHANGE_MAX = 6000;
        const FADE_INTERVAL_MIN = 10000;
        const FADE_INTERVAL_MAX = 20000;
        const OVERLAP_DURATION = 2000;

        // Get references to the video container and watermarks
        const container = document.querySelector('.video-container');
        const watermark1 = document.getElementById('watermark1');
        const watermark2 = document.getElementById('watermark2');

        // Helper function to get a random integer between min and max (inclusive)
        function getRandomInt(min, max) {
            return Math.floor(Math.random() * (max - min + 1)) + min;
        }

        // Helper function to get a random direction (either 1 or -1)
        function getRandomDirection() {
            return Math.random() > 0.5 ? 1 : -1;
        }

        // Set the initial position of the watermark inside the video container
        function setInitialPosition(watermark) {
            const x = getRandomInt(0, container.offsetWidth - watermark.offsetWidth);
            const y = getRandomInt(0, container.offsetHeight - watermark.offsetHeight);
            watermark.style.left = `${x}px`;
            watermark.style.top = `${y}px`;
            watermark.style.opacity = 1;
        }

        // Function to handle continuous movement of the watermark
        function continuousMove(watermark) {
            let dx = getRandomDirection() * MOVE_SPEED;
            let dy = getRandomDirection() * MOVE_SPEED;

            // Inner function to handle the actual movement logic
            function move() {
                let x = parseInt(watermark.style.left || 0) + dx;
                let y = parseInt(watermark.style.top || 0) + dy;

                // Check boundaries and reverse direction if necessary
                if (x < 0 || x > container.offsetWidth - watermark.offsetWidth) {
                    dx = -dx;
                }
                if (y < 0 || y > container.offsetHeight - watermark.offsetHeight) {
                    dy = -dy;
                }

                // Apply the new position
                watermark.style.left = `${x}px`;
                watermark.style.top = `${y}px`;

                // Continue moving
                setTimeout(move, 100);
            }

            move();

            // Change direction at random intervals
            setInterval(() => {
                const randomChoice = Math.random();
                if (randomChoice < 0.33) {
                    dx = getRandomDirection() * MOVE_SPEED;
                    dy = 0;
                } else if (randomChoice < 0.66) {
                    dy = getRandomDirection() * MOVE_SPEED;
                    dx = 0;
                } else {
                    dx = getRandomDirection() * MOVE_SPEED;
                    dy = getRandomDirection() * MOVE_SPEED;
                }
            }, getRandomInt(DIRECTION_CHANGE_MIN, DIRECTION_CHANGE_MAX));
        }

        // Handle the fading out of the old watermark and fading in of the new watermark
        function fadeOutAndIn(oldWatermark, newWatermark) {
            setTimeout(() => {
                setInitialPosition(newWatermark);
                newWatermark.style.opacity = 1;
            }, 0);

            setTimeout(() => {
                oldWatermark.style.opacity = 0;
            }, OVERLAP_DURATION);

            // Continue the cycle
            setTimeout(() => fadeOutAndIn(newWatermark, oldWatermark), getRandomInt(FADE_INTERVAL_MIN, FADE_INTERVAL_MAX));
        }

        // Initialize the watermarks
        setInitialPosition(watermark1);
        continuousMove(watermark1);
        setTimeout(() => fadeOutAndIn(watermark1, watermark2), getRandomInt(FADE_INTERVAL_MIN, FADE_INTERVAL_MAX));
        continuousMove(watermark2);
    

  


  body, html {
            height: 100%;
            margin: 0;
            font-family: Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            background-color: #eee;
        }

        .video-container {
            width: 50vw;
            height: 50vh;
            background-color: black;
            position: relative;
            overflow: hidden;
        }

        .watermark {
            font-size: 22px;
            position: absolute;
            color: white;
            opacity: 0;
            transition: opacity 2s;
        }

  


  &#xA;&#xA;&#xA;    &#xA;    &#xA;    &#xA;&#xA;&#xA;    <div class="video-container">&#xA;        <span class="watermark">watermark</span>&#xA;        <span class="watermark">watermark</span>&#xA;    </div>&#xA;    &#xA;&#xA;

  


  


  



  I am trying to achieve an animation effect using ffmpeg. I am adding text watermark to an input video and animate the text diagonally, horizontally or vertically changed randomly. Here is what I have achieved so far.

  


  ffmpeg -i video.mp4 -c:v libx264 -preset veryfast -crf 25 -tune zerolatency -vendor ap10 -pix_fmt yuv420p -filter:v "drawtext=fontfile=./fonts/Roboto/Roboto-Light.ttf:text='Watermark':fontcolor=white:alpha=0.5:fontsize=60:y=h/10*mod(t\,10):x=w/10*mod(t\,10):enable=1" -c:a copy watermark.mp4

  


  Here is what I want it to work.

  


  Initial Position :
The watermark randomly placed in the video the first time they appear.

  


  Continuous Movement :
The watermark continuously moves within the video.
The direction and speed of the watermark's movement are random. It can move diagonally, purely horizontally, or purely vertically.
When the watermark reaches the boundaries of the video, it bounces back, changing its direction.

  


  Direction Change :
During its continuous movement, the watermark will suddenly change its direction at random intervals between 3 to 6 seconds.
When changing direction, the watermark can randomly determined move diagonally, purely horizontally, or purely vertically.

  


  Fade In and Out :
Every 10 to 20 seconds (randomly determined), the current watermark begins to fade out.
As the old watermark starts to fade out, a new watermark fades in at a random position, ensuring that there's always a visible watermark on the screen.
These two watermarks (the fading old one and the emerging new one) overlap on the screen for a duration of 2 seconds, after which the old watermark completely disappears.
These patterns and characteristics together provide a dynamic, constantly moving, and changing watermark for the video

  


  To achieve the result I think we can use the drawtext multiple times. I have attached the HTML and JavaScript variant just for the reference to understand the result but I am trying to do this using ffmpeg.