Wan 2.5 图片转视频（快速）

About Wan 2.5 Image to Video Fast

Wan 2.5 image to video fast is the same still-to-clip workflow on the low-latency endpoint, with two resolutions instead of three and a shorter credit charge at both. It takes a reference image and a prompt, returns five or ten seconds of video with audio, and accepts the same optional negative prompt, prompt expansion and seed as the standard page.

The trade is easiest to read off the price table. A five-second run at 720p is 420 credits here against 600 on the standard page, and at 1080p it is 630 against 900. The endpoint's own wait estimate drops too, to about 210 seconds at 720p and 270 at 1080p. What goes away is the 480p tier, so the cheapest draft here costs 420 credits where the standard page still offers a 300-credit pass at that size. The saving only exists if you were going to work at 720p or above anyway, and a ten-second run doubles both tiers to 840 and 1,260 credits on the same rule the standard page uses.

Everything upstream of the endpoint is the same. The reference image is capped at 20MB and can be JPEG, PNG, WebP or GIF, uploaded or pasted as a hosted URL. The prompt is required, and a negative prompt, prompt expansion and a seed are still on the panel. Audio also survives the fast path: attach a narration or music bed in MP3, WAV, OGG, WebM, M4A or MP4 up to 40MB, and Wan 2.5 image to video fast is asked to follow the speech or the beat, or leave it empty and the clip arrives with a generated soundtrack. Duration stays at five or ten seconds, and a failed render refunds the credits.

The two pages call different endpoints, which is worth remembering when you move work between them. A seed recorded on the fast variant does not promise the same frame on the standard one, and a clip that looks acceptable at 720p fast may resolve differently when it is re-rendered at 1080p standard. The useful habit is to treat this page as the draft bench and the standard page as the final pass: lock the image, the prompt and the duration here, then spend the extra credits once, on the take you already know works. Nothing about the uploads, the prompt or the audio has to change between those two passes; only the endpoint does.

How Wan 2.5 Image to Video Fast works

1. 1

   Load the image and write the prompt

   JPEG, PNG, WebP or GIF up to 20MB, or a hosted URL. The prompt is required and should carry the action, the camera move and the pacing, since there is no footage for the model to follow.

2. 2

   Choose 720p or 1080p

   Fast mode has no 480p setting. A five-second run is 420 credits at 720p and 630 at 1080p, and ten seconds doubles both. Pick the lower tier for anything you are still deciding about.

3. 3

   Add sound, generate, keep the take

   Optionally attach audio up to 40MB, set a negative prompt or a seed if you want a repeat, then run. Download the MP4 when it lands; if the provider returns nothing, the credits come back on their own.

What Wan 2.5 Image to Video Fast is best for

• Social clips on a deadline

  Vertical shots that ship the same day benefit more from the shorter wait than from the third resolution tier, and 720p covers most feed playback.

• Storyboard passes

  Run a dozen prompt variations of one still, pick the composition that reads, then rebuild only that one on the standard page at the resolution you will deliver.

• Single-shot A/B tests

  Two prompts, one image, same seed: the fast endpoint makes a side-by-side cheap enough to run before committing to a final render.

• Narration-driven portraits

  A portrait plus a voice track, with the fast path asked to match mouth movement to the audio, is a practical way to test a talking take without paying for the standard tier.

Wan 2.5 Image to Video Fast at a glance

Model

Alibaba Wan 2.5 image to video, fast endpoint, run through WaveSpeed

Clip length

5 or 10 seconds

Resolution

720p or 1080p; no 480p tier

Credit cost

420 credits per five seconds at 720p, 630 at 1080p; a ten-second run doubles it

Inputs

Reference image up to 20MB (JPEG, PNG, WebP, GIF) or a hosted URL plus a required prompt; optional audio up to 40MB, negative prompt and seed

Output

MP4 with an audio track, downloaded from the preview panel

Wan 2.5 Image to Video Fast FAQ

Why is the fast version cheaper than the standard one?

At 720p a five-second run is 420 credits here against 600 on the standard page, and 630 against 900 at 1080p. The fast endpoint also carries a shorter expected wait, about 210 seconds at 720p against 360. It gets there through the fast endpoint rather than by charging the same for less: the credit table and the wait estimate are both lower at the two sizes it offers.

Is there a 480p option?

No. Wan 2.5 image to video fast runs at 720p or 1080p only. If you want the cheapest possible draft, the standard page still has a 480p tier at 300 credits per five seconds, which undercuts this page's entry price.

Does fast mode keep audio?

Yes. An audio track up to 40MB can be attached for lip-sync or musical timing, and leaving the field empty lets the model generate its own soundtrack. The result is an MP4 with audio, the same as on the standard page.

Can I move a seed from this page to the standard one?

Treat them as separate samplers. The two pages post to different endpoints, so a seed that produced a good frame here will not reproduce it on the standard page. Rebuild the look from the prompt and the image instead, then fix a new seed on the final endpoint.

What does a failed render cost me?

Nothing. If the job fails or returns no video, the credits are refunded automatically; the panel reports the failure and the charge is reversed. New accounts start with 300 credits and can claim 50 more per daily login, both valid for 30 days, and the starter pack is 500 credits for $9.90.