videostringrequired
Input video URL (HTTPS, publicly accessible).
FlashVSR
alibaba/flashvsrFlashVSR is a video super-resolution model that upscales videos to higher resolutions (720p / 1080p / 2K / 4K) with fast inference.
Try the model
Playground
Input
Input video URL (HTTPS, publicly accessible).
Target output resolution. Allowed values: 720p, 1080p, 2k, 4k.
ResultIdle
Your output will appear here
Complete the inputs, then click Run.
FlashVSR
Upscale an existing video to 720p, 1080p, 2K, or 4K with FlashVSR's fast video super-resolution, which restores detail while keeping motion stable.
Fields
| Field | Type | Default | Notes |
|---|---|---|---|
video | video URL, required | — | Video to upscale. |
resolution | 720p / 1080p / 2k / 4k, required | 1080p | Target resolution; sets the per-second rate. |
Billing
You pay per second of output video: $0.014 at 720p, $0.031 at 1080p, $0.055 at 2K, and $0.124 at 4K. The quote before submission assumes 5 seconds; the final charge uses the measured length.
| Video length | 720p | 1080p | 2k | 4k |
|---|---|---|---|---|
| 5s | $0.07 | $0.155 | $0.275 | $0.62 |
| 10s | $0.14 | $0.31 | $0.55 | $1.24 |
| 30s | $0.42 | $0.93 | $1.65 | $3.72 |
Failed runs are not charged.
Limits
- Upscaling restores detail but cannot fix heavy blur or compression artifacts completely.
Also on SandBase
Related: bytedance/upscaler/video (ByteDance video upscaler).
Start building
Send your first request
Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "alibaba/flashvsr",
"resolution": "1080p"
}
SANDBASE_JSON
)
run_id=$(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
resolutionstringrequired
Target output resolution.
Default: "1080p"
Possible values: "720p", "1080p", "2k", "4k"
{
"model": "alibaba/flashvsr",
"resolution": "1080p"
}Output
A completed run exposes its result in output. The following is the model’s saved example, not a new generation.
No example output has been published yet. Use Playground → Result → JSON after a completed run to inspect your response.