audio & image

Generate narration for a video

Create a script from campaign source, select a live TTS provider, and attach the voiceover to video.

18 minutes

Intermediate

Video creators

Both execution

What You Will Finish With

A generated narration asset is reviewed separately, then mixed into the video without replacing the original source.

1
Write the spoken script
Derive it from campaign facts, remove visual-only language, and read it aloud before generation.
2
Choose a live voice model
Call creative_capabilities. Select fal, OpenAI, or ElevenLabs only when its connection is READY.
3
Generate the narration
Submit TTS with the exact approved script and an optional voice identifier. Review the credit estimate.
4
Review audio alone
Check pronunciation, pacing, names, numbers, and emotional tone before mixing it into video.
5
Replace or mix audio
Use hosted audio-replace or local Creative. Preserve the original video and import the edited output as a new asset.

Where to go next

Part of Create your first piece of content. Finish the journey in order for the full picture.

Ask my agent

Copy a ready prompt for this tutorial and paste it into any agent connected to Postward.

Preview the prompt

Follow the Postward tutorial "Generate narration for a video".

Outcome: A generated narration asset is reviewed separately, then mixed into the video without replacing the original source.
Prerequisites to verify first: A campaign or approved script; A READY provider serving TTS; Writable storage.

Steps:
1. Write the spoken script: Derive it from campaign facts, remove visual-only language, and read it aloud before generation.
2. Choose a live voice model: Call creative_capabilities. Select fal, OpenAI, or ElevenLabs only when its connection is READY.
3. Generate the narration: Submit TTS with the exact approved script and an optional voice identifier. Review the credit estimate.
4. Review audio alone: Check pronunciation, pacing, names, numbers, and emotional tone before mixing it into video.
5. Replace or mix audio: Use hosted audio-replace or local Creative. Preserve the original video and import the edited output as a new asset.

First inspect my environment and existing configuration, and verify each prerequisite before acting.
Follow the current Postward documentation rather than assuming tool names.
Do not replace unrelated configuration.
Verify the result and report exactly what changed.

Prerequisites

A campaign or approved script
A READY provider serving TTS
Writable storage

Works With

fal.ai
OpenAI
ElevenLabs