Happy Wan: Videos with Picture and Sound Together
On Happy Wan, every video comes with synced audio, at no extra cost. You do not need a separate audio step. Mention the sounds you want in your prompt. Clips run 4 to 15 seconds, at up to 1080P, using Wan 3.0.
Picture and sound in one generation
Native audio means the soundtrack of the clip is generated together with the video, not added later in another tool. Every video comes with synced audio, at no extra cost. There is no sound toggle. When you generate from a text prompt or from a photo, the result includes ambience and sound effects that fit the scene — waves on a beach, a busy shop, a quiet room, the rustle of packaging.
You still write one prompt. Put the sounds you care about in the same sentence as the action, so the model has something concrete to follow.
What to ask for — and what not to expect
Good prompts name a source of sound: “light rain on a window,” “soft footsteps on wood,” “street traffic in the distance.” Vague requests like “amazing audio” give the model less to work with.
Be clear about the limits. Happy Wan generates ambience and effects with the picture. It is not a music-production tool, and it does not promise a film score, a finished voice-over session, or lip-sync that a viewer cannot tell from a live recording. If dialogue matters, treat the result as a draft and check it carefully.
Length, export and credits
Each clip is 4 to 15 seconds, at 480P, 720P or 1080P, in 16:9, 9:16, 4:3, 3:4, 1:1 or 21:9. Preview the video with sound and download an MP4. Video costs 5 credits per second, whatever the resolution. A 5-second clip is 25 credits. Synced audio comes at no extra cost. New accounts get 50 credits. The exact cost is shown before you generate. If a generation fails, those credits come back automatically. Plans and credit packs are on the pricing page.
How it works
- Start from a text prompt or a photo.
- Describe the scene and the sounds you want. Pick resolution, length and aspect ratio, and check the credit cost.
- Generate, preview the clip with sound, and download the MP4.
FAQ
- Does the video include sound?
- Yes, every video comes with synced audio.
- Does sound cost extra?
- No.
- Do I need a separate audio tool?
- No. Every video comes with synced audio, at no extra cost. You preview the clip with sound and download a single MP4.
- Can I get music or perfect lip-sync?
- Happy Wan is not a music-scoring tool, and it does not promise lip-sync that is indistinguishable from a live recording. Use it for ambience and effects, and review any speech carefully.
- Does this work with both text to video and image to video?
- Yes. You can start from a prompt or from a photo. The same length and resolution limits apply: 4 to 15 seconds, at 480P, 720P or 1080P.
- How do credits work, and what if a generation fails?
- Video costs 5 credits per second, whatever the resolution. A 5-second clip is 25 credits. New accounts get 50 credits. The exact cost is shown before you generate. If a generation fails, the credits for that generation are returned to your balance automatically. See Happy Wan Pricing.