seedinteger
Random seed for reproducibility. If None, a random seed is chosen.
Vidu Q4 Image to Video
vidu/q4/image-to-videoVidu Q4 Preview by Shengshu animates a first-frame image into a 3 to 16 second video at up to 4K. Prompts can direct motion, camera cuts, and spoken dialogue, with native speech and sound effects.
Try the model
Playground
Input
Text prompt for video generation, max 5000 characters. Can direct motion, camera cuts, and spoken dialogue.
PNG, JPEG, WebP, or GIF · 20 MiB maximum
URL or base64 data URI of the image to use as the first frame. Supports png, jpeg, jpg and webp up to 50 MB.
This field is required.
Additional Settings More
Customize your input with more control.
Output video resolution. Sets the per-second rate. Allowed values: 540p, 720p, 1080p, 2K, 4K.
316
Duration of the video in seconds (3-16) Range: 3 to 16.
Random seed for reproducibility. If None, a random seed is chosen.
ResultExample
What would you like to do next?
Examples
Select an example to load its inputs and result into the playground.
- Open result ↗
Input
{ "image": "https://static.sandbase.ai/examples/da3da75f-2e08-46a9-95f1-398e0499bed9/input/99da89c9-98be-4974-8eed-5e8b4965db43.webp", "prompt": "The woman turns toward the camera and smiles, then the shot cuts to a close-up as she says: \"Let's go.\"" } - Open result ↗
Input
{ "image": "https://static.sandbase.ai/examples/ccdbd99a-6ef9-413d-8bac-ea4670227979/input/4e82b9ae-5614-4a88-84a1-263ed973d933.png", "prompt": "The astronaut raises a hand and waves as the nebula swirls behind him; the camera slowly pushes in and then rises above his helmet. Low cosmic hum and a soft radio crackle." }
Vidu Q4 Image to Video
Vidu Q4 Preview image-to-video: animate a first frame into a 3–16 second clip at up to 4K, with native audio such as speech and sound effects directed by the prompt.
Fields
| Field | Type | Default | Notes |
|---|---|---|---|
prompt | string | empty | Up to 5,000 characters. Describe motion, camera cuts, and dialogue. |
image | image URL, required | — | First frame. PNG, JPEG, or WebP up to 50 MB. |
resolution | 540p / 720p / 1080p / 2K / 4K | 720p | Sets the per-second rate. |
duration | integer 3–16 | 5 | Output length in seconds. |
seed | integer | random | Fix it to compare prompt changes. |
Billing
You pay for output seconds: $0.045 at 540p, $0.095 at 720p, $0.12 at 1080p, $0.19 at 2K, $0.39 at 4K.
| Output | 540p | 720p | 1080p | 2K | 4K |
|---|---|---|---|---|---|
| 3s | $0.135 | $0.285 | $0.36 | $0.57 | $1.17 |
| 5s (default) | $0.225 | $0.475 | $0.60 | $0.95 | $1.95 |
| 8s | $0.36 | $0.76 | $0.96 | $1.52 | $3.12 |
| 16s | $0.72 | $1.52 | $1.92 | $3.04 | $6.24 |
Failed runs are not charged.
Prompting
- Describe subject, action, camera, and sound. Put spoken lines in quotes.
- This endpoint has no audio switch.
Also on SandBase
vidu/q4/reference-to-video keeps characters, products, and voices consistent from reference images and audio. Vidu Q3 endpoints such as vidu/q3/image-to-video remain available.
Start building
Send your first request
Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "vidu/q4/image-to-video",
"image": "https://storage.googleapis.com/falserverless/web-examples/vidu/stylish_woman.webp",
"prompt": "The woman turns toward the camera and smiles, then the shot cuts to a close-up as she says: \"Let's go.\"",
"duration": 5,
"resolution": "720p"
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
status=$(printf '%s' "$result" | jq -r .status)
case "$status" in completed|failed|timeout) break ;; esac
sleep 2
result=$(curl --fail-with-body --silent \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
"https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"2. Authentication
Create a SandBase API key and set it in your server environment. All requests use Bearer authentication.
export SANDBASE_API_KEY="YOUR_API_KEY"Keep the key on your server. Do not expose it in browser code or commit it to a repository.
3. Queue
Submit a request
POST to /v1/run with this model ID and its inputs. The request example above includes submission and polling.
Fetch request status and result
Use the returned run ID to poll until the status is completed, failed or timeout. Read output only after completed.
curl "https://api.sandbase.ai/v1/run/$RUN_ID" \
-H "Authorization: Bearer $SANDBASE_API_KEY"4. Files
Hosted files
Pass a publicly accessible file URL in the model’s image, video or audio field. Supported formats and limits are shown beside each Playground input.
Uploading images
Use the upload or replace control on supported image fields in the Playground. Video URL fields accept a hosted driving video; they do not imply video-upload support.
5. Schema
Input
imagestringrequired
URL or base64 data URI of the image to use as the first frame. Supports png, jpeg, jpg and webp up to 50 MB.
promptstring
Text prompt for video generation, max 5000 characters. Can direct motion, camera cuts, and spoken dialogue.
Default: ""
durationinteger
Duration of the video in seconds (3-16)
Default: 5
Minimum: 3
Maximum: 16
resolutionstring
Output video resolution. Sets the per-second rate.
Default: "720p"
Possible values: "540p", "720p", "1080p", "2K", "4K"
{
"model": "vidu/q4/image-to-video",
"image": "https://storage.googleapis.com/falserverless/web-examples/vidu/stylish_woman.webp",
"prompt": "The woman turns toward the camera and smiles, then the shot cuts to a close-up as she says: \"Let's go.\"",
"duration": 5,
"resolution": "720p"
}Output
A completed run exposes its result in output. The following is the model’s saved example, not a new generation.
[
{
"url": "https://static.sandbase.ai/examples/da3da75f-2e08-46a9-95f1-398e0499bed9/output/d3ecd824-a438-46f3-ac76-3cac64dc8435.mp4"
}
]