LTX 2.3 Image to Video with Voice Reference
Transform any static image into a realistic talking video with natural voice synchronization, using your own audio as reference.

How to Use
Upload Reference Image
Upload the image of the person or character you want to bring to life.
Upload Voice Reference Audio
Upload a short audio clip (ideally 5–15 seconds) containing the voice tone, accent, and style you want to replicate.
Select Aspect Ratio
Choose Vertical (portrait) or Horizontal (landscape).
Write Your Prompt
Describe the scene, camera angle, expressions, movements, emotions, and especially what the person should say.
Select Video Duration
Choose the desired length of the video.
Generate

The app will create a high-quality video with synchronized voice and natural speaking motion based on your reference audio.

Important Guidelines for Best Results

Be as detailed as possible in your prompt. Include information about pose, expression, lighting, camera movement, emotion, and tone of voice.

The spoken text must be consistent with the selected video duration. If the speech is too long, it will be cut off.

Always specify in your prompt that the video should last about 2–3 seconds shorter than the selected duration. This safety margin helps prevent the audio from being cut off at the end.

Videos longer than 20 seconds tend to gradually lose character consistency. For best results, we recommend keeping videos at 20 seconds or shorter.

Clearly specify language, accent, and speaking style when needed (e.g., “in Brazilian Portuguese with a Porto Alegre accent”).

Use a clear and consistent voice reference audio for better voice cloning and synchronization quality.

Example Prompt

"The woman is standing, medium shot, in a photography studio. Create a monologue, in English, lasting approximately 15 seconds (for an 18-second video), inviting everyone to check out the app 'LTX 2.3 Image to Video with Voice Reference' and conclude with this phrase: 'Welcome to the world of NLTYI. No Limits To Your Imagination'."

Inviting expression