Export Audio Stems as FLAC in Kdenlive

This guide provides a straightforward, step-by-step tutorial on how to isolate and export a dedicated audio stem in the high-quality, lossless FLAC format using the Kdenlive video editor. Whether you need to send individual tracks to an audio engineer for mixing or archive high-fidelity audio elements from your video project, you will learn how to configure your timeline and render settings to export your audio stems quickly and efficiently.

Step 1: Isolate the Audio Track

To export a dedicated stem, you must ensure that only the target audio track is audible during the export process.

  1. Open your project in Kdenlive and locate the timeline at the bottom of the screen.
  2. Find the specific audio track (e.g., Audio 1, Audio 2) that contains the stem you want to export.
  3. Click the Solo button (represented by a headphone icon or an ‘S’ icon) on that specific track header. This will automatically mute all other audio tracks in your project, ensuring only the selected track is played and exported.

Step 2: Open the Render Dialog

Once the target audio track is isolated, you need to access Kdenlive’s export settings.

  1. Click the Render button in the main top toolbar, or press Ctrl + Enter (Cmd + Enter on macOS) to open the Render window.

Step 3: Select the FLAC Profile

Kdenlive includes dedicated presets for high-quality audio rendering.

  1. In the Render dialog, look at the Presets list on the left side.
  2. Scroll down and expand the Audio only category.
  3. Click on FLAC to select it as your output format. FLAC is a lossless format that preserves original audio quality while maintaining a smaller file size than WAV.

Step 4: Configure Output and Render

Before starting the export, set your file destination and render range.

  1. In the Output file field at the top of the dialog, click the folder icon to select your destination directory and name your stem (e.g., vocals_stem.flac).
  2. Under the Render Project section, choose whether to export the Full project or just a Selected zone (if you have set In/Out points on your timeline).
  3. Click the Render to File button at the bottom of the window.

Kdenlive will process the timeline and generate a dedicated FLAC audio file containing only your isolated stem. Repeat this process for any other individual tracks you need to export.