Get Audio Length Variable - SMABVERSE/GODOT-CHAT-GPT GitHub Wiki

The following article is copied from ChatGPT-4o's response to the following prompt:

Hello, how can I put the playtime of an audio file into an variable in Godot?

To get the playtime of an audio file and put it into a variable in Godot, you can use the AudioStreamPlayer node along with the AudioStream resource. Here's a step-by-step guide to achieve this:

  1. Load the audio file into an AudioStreamPlayer node:

    • Ensure your audio file is imported and available in the Godot project.

  2. Get the audio stream's length:

    • Use the AudioStream resource to obtain the length of the audio in seconds.

Here's a script to demonstrate this process:

  1. Add an AudioStreamPlayer node to your scene:

    • In the scene tree, add an AudioStreamPlayer node.
    • Load your audio file into the stream property of the AudioStreamPlayer node through the Inspector.

  2. Attach a script to the AudioStreamPlayer node:

    • Attach a new script to the AudioStreamPlayer node (e.g., AudioStreamPlayer.gd).

  3. In the script, get the length of the audio stream:

extends AudioStreamPlayer

# Variable to store the length of the audio file
var audio_length: float = 0.0

func _ready():
    # Ensure the stream is loaded
    if stream:
        # Get the length of the audio stream
        audio_length = stream.get_length()
        print("Audio length: ", audio_length, " seconds")

Explanation:

  • extends AudioStreamPlayer: This line ensures the script extends the functionality of the AudioStreamPlayer node.
  • var audio_length: float = 0.0: This declares a variable to store the length of the audio.
  • func _ready(): The _ready function is called when the node is added to the scene.
  • if stream:: This checks if the stream property (audio file) is loaded.
  • audio_length = stream.get_length(): This gets the length of the audio file in seconds and stores it in the audio_length variable.
  • print("Audio length: ", audio_length, " seconds"): This prints the length of the audio file to the output console.

Additional Notes:

  • Ensure your audio file is properly imported and its format is supported by Godot.
  • You can use this length for various purposes, such as setting up timers or syncing other actions with the audio.

This method allows you to dynamically retrieve and use the playtime of any audio file loaded into the AudioStreamPlayer node in your Godot project.