How to Change Audio Sample Rate in Kdenlive

Adjusting the audio sample rate in Kdenlive is essential for maintaining audio sync and ensuring high-quality sound output. This guide provides a straightforward, step-by-step walkthrough on how to configure and change the audio sample rate for a specific project, both when setting up your project timeline and during the final rendering process.

Method 1: Adjusting the Sample Rate via Project Profiles

In Kdenlive, the project’s default audio sample rate is determined by the selected Project Profile. To change this rate for your current project, follow these steps:

  1. Open Project Settings: Go to the top menu and select Project > Project Settings (or press Ctrl + Shift + ,).
  2. Select a Profile: In the “Project Settings” dialog, look at the list of available video profiles. Most standard HD and 4K profiles default to an audio sample rate of 48000 Hz (48 kHz). Some older or custom profiles may use 44100 Hz (44.1 kHz).
  3. Create a Custom Profile (If Needed): If you need a specific sample rate not provided by the default profiles:
    • Click the Manage Project Profiles icon (the sheet with a green plus sign or gear icon) on the right.
    • Click Create New Profile.
    • Define your video settings, and in the parameters, ensure the audio sample rate matches your target (e.g., ar=44100 or ar=48000).
    • Save the profile and select it for your project.

Method 2: Adjusting the Audio Sample Rate During Export (Rendering)

You can also change the audio sample rate specifically for your final output file during the rendering phase:

  1. Open the Render Dialog: Click the Render button in the top toolbar or press Ctrl + Enter.
  2. Select your Format: Choose your preferred rendering format (e.g., MP4, WebM, or Audio Only).
  3. Edit the Render Profile: Click the Edit Profile button (represented by a pencil icon) next to the selected preset.
  4. Modify the Audio Parameters:
    • In the encoding parameters text box, look for the audio sample rate argument, which is represented by ar= (e.g., ar=48000).
    • Change the value to your desired rate, such as ar=44100 for 44.1 kHz or ar=48000 for 48 kHz.
  5. Save and Render: Click Save to apply the changes, then click Render to File to export your project with the newly adjusted audio sample rate.