Video without audio is just visuals. Whether you need a narrator to walk viewers through a product explainer or characters exchanging dialogue in a brand story, voice is what transforms a sequence of images into a compelling message.

The challenge has always been that producing professional voiceover required studio time, voice talent, and a post-production pipeline that added cost and delay to every project.

LTX Studio changes this. Its audio tools let you add AI-generated voiceover, character dialogue, and multi-speaker audio directly within the platform—no external software, no separate recording sessions, no waiting for talent availability.

This guide covers how to use these tools effectively, from basic narration to complex multi-speaker scenes.

Understanding LTX Studio’s Audio Capabilities

Before diving into the workflow, it helps to understand what LTX Studio’s audio tools are built for. The platform supports two distinct audio production modes: voiceover narration and character dialogue.

Voiceover narration is the traditional mode—a single voice speaking over video, usually to explain, guide, or contextualize what’s on screen. This is the primary format for product demos, tutorials, and explainer videos.

Character dialogue is different. It involves multiple voices, each assigned to a specific character or speaker, with audio that’s synchronized to the video. This is the format for brand stories, scripted scenes, and any content where on-screen figures are speaking directly.

LTX Studio supports both modes, and you can combine them in the same project—a narrator introducing a scene, followed by characters speaking within it.

How to Add AI Voiceover to Your Video

Adding a voiceover in LTX Studio is a workflow that starts in Storyboard, where your video sequence is assembled.

Step 1: Assemble Your Sequence in Storyboard

Before adding audio, your video needs to be sequenced. Open your Project, switch to Storyboard view, and arrange your clips in the order you want them. Set your clip durations so you have a clear sense of timing—voiceover works best when you know how long each segment is.

Step 2: Write Your Voiceover Script

Write the narration text you want the AI voice to deliver. A few things worth keeping in mind as you write:

• Match your script length to your video timing. A rough guide: 125–150 words per minute for a comfortable narration pace.
• Punctuation affects delivery. Periods create natural pauses. Use them intentionally to control rhythm.
• Read the script aloud before generating. If it sounds awkward spoken, the AI will surface that awkwardness.

Step 3: Select Your Voice and Generate

In the audio panel, select a voice from the available options. LTX Studio’s voice library covers a range of styles, tones, and accents—professional, conversational, authoritative, warm. Choose based on the tone of the video, not just personal preference.

Once you’ve selected a voice and entered your script, generate the audio. Review the output against your video. If the pacing doesn’t match or a specific phrase needs adjustment, edit the script and regenerate—the iteration cycle is fast.

How to Add Character Dialogue to Your Videos

Character dialogue requires a bit more setup than narration because you’re assigning voices to specific on-screen figures and synchronizing their speech to the video.

Step 1: Define Your Characters

In LTX Studio, characters are defined as Elements—persistent assets that maintain visual and audio consistency across a project. Before adding dialogue, define the characters who will be speaking. This connects the visual character (how they look in the video) to the voice that will speak their lines.

Step 2: Write Your Dialogue Script

Write the dialogue as a script with clear speaker labels. This is different from a narration script—you’re writing conversation, not continuous prose. Keep exchanges natural and avoid monologuing; dialogue that would feel unnatural if acted will feel unnatural when generated.

Step 3: Assign Voices to Characters

In the audio panel, assign a distinct voice from the library to each character. Voice differentiation matters—if two characters sound similar, dialogue loses clarity. Choose voices that contrast in tone, pace, or register to make each character immediately identifiable.

Step 4: Sync Audio to Video

Once dialogue is generated, sync it to the corresponding video segments in Storyboard. LTX Studio’s lip sync capability can align the character’s on-screen mouth movements to the generated audio, creating a more natural connection between what’s seen and heard.

Audio-to-Video Workflows

Some production workflows start with audio rather than visuals. You might have a recorded interview, a script that’s been recorded, or a piece of audio content that needs video built around it. LTX Studio supports this direction as well.

In an audio-to-video workflow, you start by importing your audio into the project, then generate video that complements it. The platform’s generation tools let you create visuals that match the tone, pacing, and content of the audio—building a visual layer on top of existing sound rather than adding sound to existing visuals.

This is particularly useful for podcast content repurposing, interview series, and any project where the audio is the primary asset and the video serves as an illustrative layer.

Getting the Most Out of AI Voice Generation

A few practices consistently improve AI voice output quality:

Be specific about tone in your script setup. The voice you select sets the baseline, but the script itself shapes delivery. Sentences structured to be read aloud produce better results than sentences structured for reading on screen.

Use Retake for targeted adjustments. If one phrase in an otherwise good voiceover sounds off, you don’t need to regenerate the entire audio track. Use targeted regeneration to fix the specific segment without affecting the rest.

Test short segments before committing to full scripts. Generate a 30-second sample with your chosen voice and script style before running the full production. Catching a mismatch early saves time later.

Match voice energy to visual energy. A fast-paced, high-energy video with a slow, measured voiceover creates cognitive dissonance. Align the pace and tone of your audio selection to the visual rhythm of the video.

Adding Audio to Your Production Workflow

Audio is the element that most often separates professional video from amateur content—not because it’s technically complex, but because it’s frequently treated as an afterthought. Building audio into your production workflow from the start, rather than adding it at the end, consistently produces better results.

In LTX Studio, audio and video are produced in the same environment, which makes this integration natural. You’re not moving between platforms or managing separate files—you’re building the complete video, including its audio layer, inside one workspace. The result is faster production and more coherent output.