How can I develop a "mock" media player using javascript?

Question

How can I develop a "mock" media player using javascript?

Let me explain my setup.

Currently, I have two HTML5 audio elements, which I'll refer to as Master and Slave.

Both of these elements load the same media file, but the Slave has its audio muted by default.

Each player can control the other (pause, play, scrub, etc).

They both have custom styling and receive duration data from an external JSON file instead of relying on audio.duration.

While everything functions perfectly, the downside is that the audio file is loaded twice for each song due to server-side authentication complexities.

Is there a way to mimic an audio element without actually using it for the muted player? Perhaps with a setTimeout function or something similar?

I just need to simulate the audio.currentTime value to update the progress bar, but I'm unsure where to begin. Any advice would be appreciated. Thank you!

EDIT - To clarify, my website operates similarly to Soundcloud, with multiple players (slaves) on screen that can be controlled individually or by the master footer player. All content, except for the Master player, is dynamically loaded via Ajax.

javascript audio

Answer 1

Answer №1

To imitate the slave audio player, you can create a visual representation as follows:

Construct the element using HTML & CSS and position it dynamically to allow for JavaScript animations. Initially, set the progress bar of the simulated player with this CSS:

#progress-bar{
    left: 0px;
}

You can animate the fake player's progress bar like this, utilizing setInterval:

function moveRight() {
  var progressBar = document.getElementById('progressBar');
  var pos = 0;
  //current position on X Axis

  let move = setInterval(frame,5);
  //begin moving, every 5 milliseconds

  function frame() {
      if (pos == 400) {
        clearInterval(move);
      } else {
        pos++; 
        progressBar.style.left = 5 + pos/10 + '%'; 
      }
  }
}

You will need to adjust the values in this example according to your player's duration. Additionally, consider the length of the actual audio file when determining this line: if (pos == 400) Upon activating your master player, invoke the moveRight() function to simulate the movement of the faux slider. Experiment with the numerical parameters until the motion replicates that of a genuine audio player slider.

Answer 2

To imitate the slave audio player, you can create a visual representation as follows:

Construct the element using HTML & CSS and position it dynamically to allow for JavaScript animations. Initially, set the progress bar of the simulated player with this CSS:

#progress-bar{
    left: 0px;
}

You can animate the fake player's progress bar like this, utilizing setInterval:

function moveRight() {
  var progressBar = document.getElementById('progressBar');
  var pos = 0;
  //current position on X Axis

  let move = setInterval(frame,5);
  //begin moving, every 5 milliseconds

  function frame() {
      if (pos == 400) {
        clearInterval(move);
      } else {
        pos++; 
        progressBar.style.left = 5 + pos/10 + '%'; 
      }
  }
}

You will need to adjust the values in this example according to your player's duration. Additionally, consider the length of the actual audio file when determining this line: if (pos == 400) Upon activating your master player, invoke the moveRight() function to simulate the movement of the faux slider. Experiment with the numerical parameters until the motion replicates that of a genuine audio player slider.

How can I develop a "mock" media player using javascript?

Answer №1

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