LTX 2.5 Audio to Video Generator
Create a timed avatar clip from one portrait image and a 2–20 second audio track. Add optional motion direction, choose framing, and generate synchronized video.
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What is LTX 2.5 Audio to Video?
LTX 2.5 Audio to Video creates a short video whose timing follows an uploaded audio clip. On Story321, you pair that audio with a portrait or character image, then optionally describe pose, expression, setting, and motion. It is useful when a person, illustrated host, product mascot, or performer should react to dialogue, narration, rhythm, or music while keeping a chosen opening appearance.
LTX 2.5 Audio to Video Features
Portrait and audio as the starting point
Every LTX 2.5 Audio to Video request uses one image and one audio file. The image establishes the visible subject and opening frame, while the audio gives the clip its timing. Use a clear portrait, character render, or approved spokesperson image.
Audio-led visual timing
For dialogue-led video, narration, singing, or a music cue, LTX 2.5 Audio to Video treats the uploaded track as the driver. Keep speech clear and choose one focused visual idea for a coherent performance.
Optional prompt guidance
A prompt is optional when you upload an image. Use it to describe one action, expression, or setting. Higher guidance values make LTX 2.5 Audio to Video follow that direction more closely.
Plan a Better LTX 2.5 Audio to Video Clip
Choose an image built for motion
Start with a sharp image that has one readable subject and stable lighting. A front-facing portrait works well for an AI lip sync video, while a wider character image leaves room for gestures.
Edit the audio before upload
Remove empty lead-ins, long silences, unrelated music, and abrupt endings. For an audio-driven avatar, one speaker or musical idea is easier to direct. Confirm that you have rights to use every input.
Describe one visible performance
Use a prompt such as “a calm presenter speaks to camera with subtle hand movement.” LTX 2.5 Audio to Video works best when the image, audio, and prompt all describe the same person and moment.
How to Generate LTX 2.5 Audio to Video
- 1
Upload a portrait or character image
Choose the image that should define the subject. Keep the face visible and avoid tiny text, logos, or background details that must remain exact while LTX 2.5 Audio to Video adds movement.
- 2
Upload 2–20 seconds of audio
Add a clear voice, singing, narration, beat, or sound-led performance. The LTX 2.5 Audio to Video clip follows the uploaded duration, so trim the source to the exact moment you want.
- 3
Set framing and optional guidance
Use Auto to match the image, or select 16:9 or 9:16. Add an optional prompt for expression or movement. Guidance ranges from 1 to 50 and starts at 9.
- 4
Generate, review, and refine
Check timing, face consistency, gesture scale, and the relationship between image and sound. Create the next LTX 2.5 Audio to Video version by changing one source or instruction at a time.
LTX 2.5 Audio to Video Use Cases
Talking portrait concepts
Turn a licensed headshot, illustrated character, or virtual host into a short speaking moment. LTX 2.5 Audio to Video suits a concise introduction, tutorial line, announcement, or scripted social post.
Music-driven character moments
Use an original vocal line, instrumental cue, or sound effect to direct a character performance. Match the image mood to the track and request one clear action.
LTX 2.5 Audio to Video Limits and Tips
- Use one source subject. This form is not designed to preserve multiple people, precise on-screen text, or changing locations.
- Keep audio between 2 and 20 seconds. Split longer material into sections, then review each LTX 2.5 Audio to Video clip before combining them.
- Only upload images and audio you have permission to use. Obtain consent before using a recognizable person's face or voice.
Continue Your LTX 2.5 Video Workflow
AI Avatar Generator
Explore avatar workflows for image-and-audio video.
Explore AI AvatarLTX 2.5 Image to Video
Start with an image when audio is not the driver.
Explore Image to VideoStory321 Pricing
Review credits before generating.
View Pricing
Häufig gestellte Fragen
What is LTX 2.5 Audio to Video?
LTX 2.5 Audio to Video makes a short video timed to uploaded audio. This Story321 avatar workflow also requires one image, which supplies the visible subject and opening frame. An optional prompt can describe movement.
What inputs does LTX 2.5 Audio to Video require?
Upload one image and one audio file. The audio must be 2 to 20 seconds long. A prompt is optional because the image already establishes the subject; add one for expression, action, or setting.
What audio works best for LTX 2.5 Audio to Video?
Use a clean track with one clear idea: one speaker, vocal line, narration segment, beat, or sound cue. Remove long silence and unrelated background noise. The source duration becomes the generated clip duration.
Which framing options are available?
Choose Auto to follow the source image, 16:9 for landscape, or 9:16 for vertical video. Start with Auto when the portrait already has the crop you want.
What does prompt guidance do?
Prompt guidance controls how closely the visual result follows your written direction. It ranges from 1 to 50 and defaults to 9 when an image is present. Increase it gradually if an action needs more emphasis.
How much does LTX 2.5 Audio to Video cost?
Credits are calculated from uploaded audio duration and shown before generation. Trim the audio to the exact moment you need before producing additional versions.
LTX 2.5 Audio to Video Pricing
Credits are calculated from the uploaded audio duration. The total updates when you choose a 2–20 second audio file.
- Input audio
- 29 credits per second
LTX 2.5 Audio to Video Specifications
| Model | Lightricks LTX 2.5 Fast Audio to Video |
|---|---|
| Story321 workflow | One portrait or character image plus one driving audio file |
| Audio duration | 2 to 20 seconds |
| Prompt | Optional; up to 5,000 characters |
| Aspect ratio | Auto, 16:9, or 9:16; Auto by default |
| Guidance scale | 1 to 50; 9 by default with an image |
| Output | A synchronized video clip timed to the input audio |
| Not available in this form | Multiple images, end-frame input, clip-count controls, and acceleration controls |
Official LTX Resources
Read the official LTX-2 repository“Audio-to-video generation conditioned on an input audio file.”
Read the official pipeline guide“Generating video driven by an input audio.”
Read the audio-to-video pipeline reference“The original audio waveform is passed through and returned in the output to preserve fidelity.”
Create an LTX 2.5 Audio to Video Clip
Upload one clear portrait and short audio clip, then use LTX 2.5 Audio to Video to create a synchronized performance. Set framing, add guidance, and review before publishing.
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