Video With Sound
Generated on PixelDojo with VEO 3.1 Fast. Produced by PixelDojo's generation pipeline.
Yes, and there are two working routes. We ran both on August 26, 2026. Route A generates the audio inside the video model in one pass: an 8 second barista clip came back with cafe chatter and espresso hiss already synchronized, for 24 credits at 3 credits per second, in 221 seconds. Route B keeps the video silent and lays a generated track underneath: a text-to-music run cost 6 credits and finished in under 30 seconds. The rest of this page is the cost math for choosing between them.
The clip that came back with its own audio
Every example below was produced on PixelDojo. Hover to see the prompt.
A barista pours latte art in a sunlit cafe, the milk swirls into a leaf pattern, ambient cafe chatter and the hiss of the espresso machine, close-up slow motion
VEO 3.1 Fast
What each route actually gives you
Diegetic sound only comes from Route A
Chatter, footsteps, machine noise and speech that line up with what is on screen have to be generated with the frames. A music bed added afterwards cannot invent them.
Reusable music only comes from Route B
One generated track can sit under a whole sequence of clips. Native audio belongs to the single clip it was generated with and cannot be lifted onto the next one.
The length limits are different
VEO 3.1 accepts clips of 4, 6 or 8 seconds. Text to Music accepts 30 seconds up to 5 minutes. That gap is why a montage gets its music generated separately instead of per clip.
WAN 3.0 also generates its own audio
WAN 3.0 turns on a native audio track by default and bills per second of output by resolution, from 1.5 credits per second at 480p to 4.5 at 1080p. Turning the audio off does not change the rate.
Both routes draw on the same credits
Video and music run on one subscription and one credit balance, so mixing the two routes on a single project does not add a second bill to track.
Every number on this page comes from two runs we made on August 26, 2026 through the public API. The barista clip plays below and the soundtrack is linked in the answers.
Why Choose Pixel Dojo for Video With Sound
Professional-quality results with cutting-edge AI technology
Route A: audio generated with the picture
VEO 3.1 Fast writes the sound into the clip itself. Our prompt asked for ambient cafe chatter and the hiss of the espresso machine, and both arrived in the returned file, timed to the picture. The run billed 24 credits for 8 seconds and took 221 seconds.
Route B: a track written to fit the cut
Text to Music takes a prose brief and returns an instrumental. Our brief asked for an uplifting indie-pop instrumental at 120 bpm with bright guitars and handclaps. It cost 6 credits and returned in under 30 seconds. Music bills 1 credit for every 5 seconds, with a 30 second floor.
The cost gap decides most projects
Native audio is billed inside the video price at 3 credits per second of clip. A separate music track is billed at 1 credit per 5 seconds of audio. Eight seconds of native-audio video cost us 24 credits. Thirty seconds of music cost us 6.
How It Works
The route decides the workflow. Here is each one as we ran it.
Pick the route
Use native audio when the sound belongs to the scene itself. Use a generated soundtrack when you want reusable music you control separately.
Route A: prompt the sound with the scene
Write the visuals and the sounds in the same prompt. Our barista clip named the cafe chatter and the espresso hiss, and VEO 3.1 Fast returned both synchronized in one 24 credit pass.
Route B: describe the music
Give Text to Music the genre, tempo and mood. Our 6 credit run returned a montage-ready instrumental in under 30 seconds, ready to attach to any clip.
The Pixel Dojo Advantage
The usual way to put sound on generated video is three tools and a sync pass. Here is what changes when the audio is part of the generation stack.
| Others | Pixel Dojo |
|---|---|
| Generate a silent clip, hunt for a music file, then sync the two in an editor | Native audio arrives inside the clip on Route A, billed at 3 credits per second with no extra step |
| Stock music libraries license per track and per use | Text to Music returned an original 30 second instrumental for 6 credits, with full commercial rights and no watermark |
| Audio tools billed on a separate plan from video tools | One subscription and one credit balance cover both routes |
| Lining a music bed up with a cut by hand | The merge tool mixes a generated track under a whole sequence at export, and each clip keeps or drops its own audio |
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Common Questions
Everything you need to know about Video With Sound
Can an AI video generator really make sound?
Yes. On August 26, 2026 we sent a barista prompt to VEO 3.1 Fast and asked for ambient cafe chatter and the hiss of the espresso machine. The returned file had both, synchronized to the picture, with no audio step of our own. That run billed 24 credits for 8 seconds and took 221 seconds.
What does native audio cost?
VEO 3.1 Fast bills 3 credits per second of clip, audio included, so our 8 second run was 24 credits. WAN 3.0 also generates a native audio track and bills per second by resolution instead: 1.5 credits per second at 480p, 2.5 at 720p, and 4.5 at 1080p.
Can I add music to a video that has no sound?
Yes. Text to Music takes a prose brief and returns a finished instrumental. Ours came from a brief for an uplifting indie-pop instrumental at 120 bpm with bright guitars and handclaps, building to an anthemic chorus, mixed clean enough to sit under a montage. It cost 6 credits, came back in under 30 seconds, and you can hear it at https://cdn.pixeldojo.ai/pixeldojo/generated-videos/geo-answers/montage-soundtrack-text-to-music.mp3
How long can the generated music be?
Between 30 seconds and 5 minutes. Billing is 1 credit for every 5 seconds, so a 30 second bed is 6 credits and a full 5 minute score is 60 credits.
Which route should I pick?
If the sound belongs to something visible on screen, pick native audio. If the sound is a bed running under several clips, generate one track and mix it under all of them. A montage of five clips needs one 6 credit track, not five native audio runs.
Can I use both routes on one project?
Yes. Keep the native audio on the clips that need it, then mix a generated instrumental under the whole sequence at export. The merge tool decides per clip whether that clip's own audio survives, so one loud ambient shot can sit next to four silent ones.