How can I add music or audio to video without watermark?

Kdenlive is an open-source video editor with a timeline-based workflow that supports multiple video and audio tracks. It provides tools for managing sound layers, adjusting volume, recording voiceovers, and applying audio effects such as EQ or reverb. For users who need to add music to video, it allows background audio to be placed separately from the main video track and adjusted during editing.

To use it, import the video and music files into the project, then drag the video onto the timeline and place the music on an audio track below. Volume changes can be controlled with keyframes to create smooth fade-in and fade-out effects, and audio settings can be adjusted according to the project requirements. After completing the edits, choose the export settings and render the final video.

The interface includes many editing options, so new users may need some time to understand the available tools. Once familiar with the timeline, audio tracks, and export process, it provides a flexible workflow to add music to video while keeping detailed control over the sound.