AI video model by ByteDance
Try Seedance 2.5 online: generate one continuous AI video of up to 30 seconds from a text prompt or a single photo, with sound rendered in the same pass.
Seedance 2.5 examples
Unedited Seedance 2.5 outputs, each generated from a short prompt or a single image.
0130-second single takes
Seedance 2.5 doubles the maximum length of Seedance 2.0: one generation can run from 4 to 30 seconds. That is enough for a full story beat with setup and payoff, a product shown from every side, or a walk through a space, with no need to stitch clips together and hope they match.
02Full ads in one clip
Thirty seconds is a standard ad length. Write the prompt as a short sequence (opening image, action, closing shot) and let one clip carry it start to finish. Keeping everything in one run avoids the jumps in lighting, wardrobe and character that appear when joining separate clips.
03Length over resolution
Seedance 2.5 renders at 480p or 720p with no higher option; that is the model’s own limit and the trade-off for longer takes. On phones and social feeds, where most clips are watched, 720p looks good. Draft at 480p while refining the prompt, then render the final take at 720p.
04Sound for the full 30 seconds
Audio is generated with the video across the whole clip, so the ambience of a 25-second scene stays consistent instead of resetting. Describe the room tone, sound effects and music mood in your prompt, or turn audio off in the settings bar if you will add your own soundtrack.
05Keeps your photo’s aspect ratio
In image to video mode, Seedance 2.5 keeps your image’s aspect ratio: a vertical phone photo makes a vertical clip, a wide landscape makes a wide one. There is no ratio setting, so crop the image to the frame you want before uploading.
06Six aspect ratios in text mode
From a text prompt, 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 cinematic widescreen look. Every ratio works with every length from 4 to 30 seconds, including long vertical takes.
Seedance 2.5
Single takes 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 into the first-frame slot; its aspect ratio becomes the clip’s.
Pick any duration 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 test the prompt short and at 480p first, then go long.
Press Create; the button shows the credit cost before you pay. Sign in or top up only when prompted, then download the finished MP4. Every clip is also saved in My videos.
Seedance 2.5 is ByteDance’s AI video model and the successor to Seedance 2.0. It generates video from a text prompt or a starting image, with sound created alongside the picture. The biggest upgrade is length: one clip can run up to 30 seconds. Use it on this page, or select it in the text to video and image to video tools.
From 4 to 30 seconds in one generation, with options of 4, 5, 6, 8, 10, 12, 15, 20, 25 and 30 seconds. Credits are charged per second, so a 30-second take costs more than a short one. Test the prompt at a short length first, then go long once the motion looks right.
No. Seedance 2.5 renders at 480p or 720p only. That is the model’s own limit, not a restriction on this site: it reaches 30 seconds but stops at 720p. For phone and social viewing, 720p looks good. If you need higher resolution for a clip of 15 seconds or less, MiniMax H3 renders in 2K.
Yes. Seedance 2.5 renders audio with the picture for 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 in the settings bar if you plan to add your own soundtrack.
No. In image mode, Seedance 2.5 keeps your uploaded image’s aspect ratio, so there is no ratio setting. Crop the photo before adding it: 9:16 for vertical, 16:9 for wide. In text to video mode you can choose 9:16, 16:9, 1:1, 3:4, 4:3 or 21:9.
Seedance 2.5 is priced per second by duration and resolution, and the exact credit cost appears on the Create button before you pay. Credits are sold in one-time packs and never expire. Failed renders are refunded automatically, so you only pay for finished clips.
It is used only to make your video and is deleted when you delete that video. The finished video stays in My videos, where you can replay and download it. Only upload images you have the right to use, and never upload photos of other people without their consent.
Choose Seedance 2.5 when you need more than 15 seconds in one take; it reaches 30 seconds at 480p or 720p and follows the photo’s ratio in image mode. Seedance 2.0 tops out at 15 seconds but lets you choose the ratio in image mode. MiniMax H3 makes 4 to 15 seconds in 2K, always with sound.
Same prompt box, different strengths. Switch any time with the model button.
