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02
Examples
Real outputs from the public examples of this model on Replicate, with the prompt and settings that produced them. They were not generated live on this page.
Prompt
The sun rises slowly between tall buildings. [Ground-level follow shot] Bicycle tires roll over a dew-covered street at dawn. The cyclist passes through dappled light under a bridge as the entire city gradually wakes up.
Dĺžka: 0:05
Settings
aspect_ratio
16:9
resolution
1080p
duration
5
fps
24
Prompt
A skier glides over fresh snow, kicking up large clouds of snow as he turns. Accelerating gradually down the slope, the camera moves smoothly alongside.
Dĺžka: 0:05
Settings
aspect_ratio
16:9
resolution
1080p
duration
5
fps
24
Príklady promptov
Príklady z katalógu Railwail. Neboli vygenerované živě na tejto stránke.
Product
Dĺžka: 0:05
Smartphone rotating with reflections
03
O Seedance Pro
StručneK 23. septembra 2026
Seedance Pro je model od ByteDance v kategórii Generovanie videí. Na Railwail stojí Seedance Pro 0,18 USD za sekundu videa. V závislosti od nastavení sa cena pohybuje od 0,036 USD/s do 0,18 USD/s. Predvolené spustenie s trvaním 5 sekúnd stojí 0,90 USD. Podporované pomery strán: 16:9, 9:16 a 1:1. Možné dĺžky: 5 alebo 10 s.
Pozadie
O ByteDance Seed
Založené 2023 · Beijing, China
ByteDance Seed is the foundation-model research arm of ByteDance, the company behind TikTok, Douyin and CapCut. Formed in 2023 and led by Wu Yonghui, Seed ships the Doubao consumer assistant, the Skylark / Doubao LLM family, the Seedream image model and the Seedance video model. Seedance launched in early 2025 with two tiers: Seedance Pro (high-fidelity) and Seedance Lite (fast). The Pro tier targets advertising, e-commerce and film-style use cases, with longer durations, higher resolution and richer cinematic controls than Lite. ByteDance also expose Seedance through the Doubao API, the CapCut Pro creator suite and selected enterprise integrations.
Diffusion Transformer (DiT) with 3D spatio-temporal VAE
Seedance Pro is a closed Diffusion Transformer operating on a 3D spatio-temporal Variational Autoencoder. The denoiser uses full 3D attention with bilingual text conditioning from ByteDance's Doubao / Skylark LLM family and optional image embeddings for first-frame, end-frame and subject-reference modes. The Pro tier is positioned for high-fidelity creative work and supports 5-10 second clips at 1080p / 24-30 fps with extension chains for longer sequences. Cinematic control vocabulary covers lens choice, camera moves and shot scale. Training uses a curated multilingual video corpus drawn in part from ByteDance's privileged access to TikTok / Douyin platform data, with synthetic dense bilingual captions and reward-model post-training tuned for aesthetic quality and prompt fidelity. Public independent benchmarks (Artificial Analysis, etc.) consistently rank Seedance Pro in the top tier of Chinese video models alongside Kling v3.
Parametre
Undisclosed
Schopnosti
Text-to-video, image-to-video and subject-reference modes
5-10 second clips at 1080p / 24-30 fps natively
Extension chains for longer sequences
Rich cinematographic prompt vocabulary
Strong prompt adherence on complex compositions
Bilingual Chinese/English prompts
Available via Doubao API, CapCut Pro and enterprise integrations
Frequently top-ranked among Chinese video models in public leaderboards
Best for: ad creative, e-commerce, cinematic shorts, branded content.
Tréning a licencia
Closed multi-billion-clip corpus including licensed video, web video and ByteDance platform data with bilingual dense captions; exact size undisclosed.
Licencia: Proprietary commercial licence via Doubao / ByteDance Seed terms; commercial use on paid plans.
Bezpečnostné testy: NSFW, CSAM, public-figure and politically sensitive content filters per CAC algorithmic-content rules; stricter on Chinese surfaces.
Známe obmedzenia
5-10 second clip limit per generation
No native audio in current version
Heavy political and public-figure moderation in China
curl https://railwail.com/api/v1/videos/generations \
-H "Authorization: Bearer $RAILWAIL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-pro",
"prompt": "A slow drone shot over a misty pine forest at sunrise"
}'
# Response: {"job_id": "...", "status": "queued", ...}
# Poll until status is completed, failed or cancelled:
curl https://railwail.com/api/v1/jobs/JOB_ID \
-H "Authorization: Bearer $RAILWAIL_API_KEY"
import os
import time
import requests
API = "https://railwail.com/api/v1"
headers = {"Authorization": f"Bearer {os.environ['RAILWAIL_API_KEY']}"}
job = requests.post(
f"{API}/videos/generations",
headers=headers,
json={
"model": "seedance-pro",
"prompt": "A slow drone shot over a misty pine forest at sunrise",
},
).json()
while True:
status = requests.get(f"{API}/jobs/{job['job_id']}", headers=headers).json()
if status["status"] in ("completed", "failed", "cancelled"):
break
time.sleep(5)
print(status["status"], status.get("output_url"))
const API = "https://railwail.com/api/v1";
const headers = {
Authorization: `Bearer ${process.env.RAILWAIL_API_KEY}`,
"Content-Type": "application/json",
};
const job = await fetch(`${API}/videos/generations`, {
method: "POST",
headers,
body: JSON.stringify({
model: "seedance-pro",
prompt: "A slow drone shot over a misty pine forest at sunrise"
}),
}).then((r) => r.json());
let status;
do {
await new Promise((r) => setTimeout(r, 5000));
status = await fetch(`${API}/jobs/${job.job_id}`, { headers }).then((r) => r.json());
} while (!["completed", "failed", "cancelled"].includes(status.status));
console.log(status.status, status.output_url);
Seedance Pro je model od ByteDance v kategórii Generovanie videí. Na Railwail ho môžete volať pomocou API kľúča cez Railwail API.
Koľko stojí Seedance Pro na Railwail?
Na Railwail stojí Seedance Pro 0,18 USD za sekundu videa. V závislosti od nastavení sa cena pohybuje od 0,036 USD/s do 0,18 USD/s. Predvolené spustenie s trvaním 5 sekúnd stojí 0,90 USD. Cena je známa pred spustením. Použitie sa platí z predplateného kreditu; 1 kredit sa rovná 0,01 USD.
Ktoré nastavenia podporuje Seedance Pro?
Podľa svojej vstupnej schémy Seedance Pro pozná tieto parametre: prompt, duration (5 alebo 10), end_image, start_image a aspect_ratio (16:9, 9:16 alebo 1:1).
Ako rýchly je Seedance Pro?
Pre Seedance Pro je na Railwail zatiaľ príliš málo meraných spustení na určenie doby spustenia. Závisí to od vstupu, nastavení a zaťaženia u poskytovateľa.
Je Seedance Pro lepší ako Google Veo 3.1?
Závisí to od úlohy. Seedance Pro (ByteDance) a Google Veo 3.1 (Google DeepMind) sú oba modely v kategórii Generovanie videí. Stránka porovnania zobrazuje ich ceny a špecifikácie vedľa seba.
Vytvorte Railwail API kľúč a pošlite svoju požiadavku s ID modelu seedance-pro. Príklady kódu pre curl, Python a JavaScript sú v časti API na tejto stránke.
