Audio to Video: Upload the Sound, Get Video Cut to It

Drop in a track, a voiceover, or a sung line. The clip comes back exactly as long as your audio, with motion that follows the beats and pauses instead of fighting them.

Audio to Video

Quicker renders for iteration and previews. Audio clips 2–20s.

Click to upload MP3, WAV, or M4A — 2–20s

The final video length follows the audio duration.

Optional first frame — JPG or PNG

Locks the opening frame while the audio drives timing and motion.

0/2000

0 credits available

Your clip appears here

Hit Generate to start the render on our cloud GPUs. The result plays back here as soon as it is ready.

The Track Is Done. Now Get the Video That Was Cut to It.

Every other tool makes you generate a clip and then trim it to the music. Audio to video starts from the sound: upload a music loop, a voiceover, or a sung line, and the video comes back exactly that long, with motion that lands on the beats and pauses you already care about. Add one image if you know how the shot should open, a line of prompt for subject and mood, and LTX 2.5 — the model that renders picture and sound as one — does the rest.

Demo
Reference image used as the first frame for the audio to video demo

Input · First Frame

Optional reference image the clip opens on.

Input · Audio

Generated · Length Follows the Audio

Why Start From Audio Instead of Text

Text to video invents everything, including the timing. Image to video fixes the look but still guesses the pacing. Audio to video is for the cases where the timing is the one thing you already have: a beat drop that needs a cut, a spoken line that needs a face, a jingle that needs a loop. Because the clip length is taken directly from the uploaded audio, you are not trimming a video to fit a track afterwards — the motion was generated to that track from the start.

What Makes This Audio to Video Workflow Useful

The timing starts with real audio

This workflow is built for cases where the audio is already the anchor. Instead of estimating pacing from text alone, you upload the clip first and let the generated motion follow it.

Optional first-frame control

You can add a single image when you need the video to begin from a known composition. That is useful for avatars, product shots, portraits, and branded visuals that should not start from a random frame.

A simpler control surface

Audio to video only exposes the controls that matter here: the audio file, one optional image, a prompt, and aspect ratio. No duration or resolution menus to second-guess — the clip length is the audio length.

How to Generate Video From Audio

1

Upload the audio

Drop in a clip between 5 and 20 seconds — music, voiceover, a sung phrase. This is the only required input, and the finished video will be exactly as long as the audio.

2

Add a first frame or a prompt

Upload one image if the shot should start from a known portrait, product, or artwork. Otherwise describe the subject, framing, and mood in a short prompt. Pick an aspect ratio and you are done with settings.

3

Generate and download

Credits are estimated from the audio length before you submit. Preview the result in the browser, adjust the prompt if the motion misses the timing, and download the clip.

FAQ

What does audio to video actually do?+
You upload an audio clip and get back a video whose length and pacing follow that sound. Optionally add one image as the first frame and a prompt for subject, motion, and mood — the timing comes from the audio, not from a duration menu.
What inputs are required for audio to video?+
The audio file is required. You can also add one optional image as the first frame. If you do not upload an image, add a prompt so the model has visual direction.
How long can the uploaded audio be?+
The supported audio duration is 5 to 20 seconds. The generated video length follows the uploaded audio instead of using a separate duration setting.
How are credits calculated for audio to video?+
Credits are calculated from the uploaded audio duration at 8 credits per second. The frontend estimates the cost immediately after upload, and the backend recalculates it again before the job is queued.
How is audio to video different from text to video?+
Text to video starts from a written description and invents the whole scene from scratch. Audio to video starts from an actual audio clip, so timing and pacing come from the uploaded sound.
Which model powers audio to video?+
Audio to video currently runs on LTX 2.5, which generates picture and sound in a single pass. The other models in the workspace — Seedance 2.0 and Kling 3.0 — are available for text to video and image to video.
When should I add a reference image?+
Add one image when you want the video to start from a specific composition, product shot, portrait, or artwork. Leave it out when the prompt alone is enough to define the visual direction.

Upload the Audio First. Let the Motion Follow It.

Upload one real clip you actually need video for, add a prompt or a first-frame image, and watch the motion land on your beats. The length is already right — that part is never your problem again.

See Plans and Credits