Merge Video & Audio

Combine video with one or more audio tracks.

Overview

The Merge Video & Audio node takes a video file and one or more audio tracks and combines them into a single output. Use it to add voiceover, background music, sound effects, or any audio to video content.

Configuration

No additional configuration required. Connect video and audio inputs.

Inputs & Outputs

Inputs:

• Video (required) — source video
• Audio (required) — one or more audio tracks

Outputs:

• Video with merged audio

  Best Practices

• Ensure audio and video durations are compatible — audio longer than video is trimmed, shorter audio leaves silence
• Use Mix Audio first if you need to layer multiple audio tracks with volume control
• Place this node after all video processing is complete

Common Use Cases

• Add AI-generated voiceover to video
• Layer background music onto content
• Combine TTS output with generated video clips
• Add sound effects to silent AI-generated video

Tips

• For precise audio mixing with volume control per track, use Mix Audio before this node
• If the video already has audio and you want to replace it, this node replaces the original track