Video model by ByteDance
Seedance 2.5 makes a single continuous take of up to 30 seconds from your prompt or first frame, with sound rendered alongside the picture.
Examples
Clips Seedance 2.5 made from a written prompt or one picture, played as they came out.
01One take up to 30 seconds
Seedance 2.5 doubles the ceiling of Seedance 2.0: a clip can run anywhere from 4 to 30 seconds in one generation. That is room for a full beat with a setup and a payoff, a product shown from several sides, or a walk through a space, without stitching separate clips together and hoping they match.
02Whole ads and story beats
Thirty seconds is a common length for an ad spot. Write it as a short sequence (the opening image, the action, the closing shot) and let one clip carry it from start to finish. Keeping the whole beat in one run avoids the jumps in light, wardrobe and character you get when joining separate clips.
03Length over resolution
Seedance 2.5 renders at 480p or 720p, and there is no higher setting: that is the model’s limit, the price of its longer takes. For phone screens and social feeds, where most of these clips end up, 720p holds up well. Use 480p while you shape the prompt and 720p for the take you keep.
04Sound across the whole take
Audio is generated together with the video for the full length of the clip, so the ambience of a 25-second scene carries through instead of resetting. Describe the room tone, the effects and the mood of any music in your prompt. Switch audio off in the settings bar if you will score the clip yourself.
05Keeps your photo’s shape
In image-to-video mode, Seedance 2.5 keeps the shape of the image you add: a vertical phone photo gives a vertical clip, a wide landscape gives a wide one. There is no ratio to pick, so crop the picture to the frame you want before uploading, and the clip will follow that crop.
06Six ratios from text
Starting from a prompt alone, choose 9:16 for TikTok, Reels and Shorts, 16:9 for YouTube, 1:1 or 3:4 for feeds, 4:3 for a classic frame, or 21:9 for a wide cinematic strip. Every ratio works with every length from 4 to 30 seconds, so a long vertical take is just one setting away.
Seedance 2.5
Long single takes of up to 30 seconds, with sound
Describe the clip in order: how it opens, what happens, how it ends and what it sounds like. For image to video, drop a photo on the first-frame slot; its shape becomes the shape of the clip.
Pick any length from 4 to 30 seconds and 480p or 720p. In text mode, also choose one of six aspect ratios. Longer clips use more credits, so try the prompt short and at 480p first, then go long.
Press Create; the button shows the credits for your settings before you pay. Sign in or top up only when asked, then download the finished MP4. Every clip is also kept in My videos.
Seedance 2.5 is ByteDance’s newer video model, following Seedance 2.0. It makes video from a written prompt or from one starting image, with sound generated alongside the picture. Its headline change is length: a single clip can run up to 30 seconds. You can use it right here, or choose it from the model menu on the text-to-video and image-to-video tools.
Anywhere from 4 to 30 seconds in one generation. The length menu offers 4, 5, 6, 8, 10, 12, 15, 20, 25 and 30 seconds. Credits are charged per second, so a 30-second take uses more than a short one. A good habit is to test the prompt at a short length first, then go long once the motion looks right.
Seedance 2.5 renders at 480p or 720p only. That is the model’s own limit, not a setting held back on this site: it reaches 30 seconds, but stops at 720p. For clips watched on phones and in social feeds, 720p holds up well. If you need more resolution for a clip of 15 seconds or less, MiniMax H3 renders in 2K.
Yes. Seedance 2.5 renders audio with the picture across the whole clip: ambient sound, effects, and music when you ask for it. Write the sound into the prompt, for example “wind against the microphone, distant traffic, no music”. Turn audio off with the switch in the settings bar if you plan to add your own soundtrack later.
No. In image mode, Seedance 2.5 keeps the shape of the image you upload, so the settings show no ratio choice. Crop the photo before you add it: 9:16 for a vertical clip, 16:9 for a wide one. In text-to-video mode you can choose from 9:16, 16:9, 1:1, 3:4, 4:3 and 21:9.
Each run is priced per second, by length and quality, and the exact number of credits is on the Create button before you pay. Credits come in one-time packs and never expire. If a render fails, the credits return to your balance on their own, so you only ever pay for clips that finish.
It is used for this one render and deleted as soon as the render ends, whether it succeeds or not. The finished video stays in My videos, where you can play it and download it again. Upload only images you have the right to use, and do not upload photos of other people without their consent.
Pick Seedance 2.5 when you need more than 15 seconds in one take; it goes to 30 at 480p or 720p and follows the photo’s shape in image mode. Seedance 2.0 stops at 15 seconds but lets you choose the ratio in image mode. MiniMax H3 runs 4 to 15 seconds in 2K, with sound always on.
Same prompt box, different limits. Switch any time from the model button.
