Wan 3.0 Video Extend continues an existing video with a newly generated segment, preserving the source video and its original audio while supporting optional audio generation for the extension. It supports 480P / 720P / 1080P output, optional last-frame guidance, and prompt control for the next action and camera movement.
Every plan, free included. Runs spend your account’s credits.
The smallest request that works: the required fields only.
Percify APIcurl https://api.percify.io/v3/playground/v1/run \
-H "Authorization: Bearer $PERCIFY_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"modelId": "wan-3-extend",
"input": {
"video": "https://example.com/clip.mp4",
"prompt": "A red fox running through fresh snow at sunrise"
}
}'8 fields in input, required first.
videoRequiredSource video URL. Inputs longer than 120 seconds are automatically trimmed to their last 120 seconds before extension.
promptRequiredThe positive prompt for the generation.
seedOptionalThe random seed to use for the generation. -1 means a random seed will be used.
durationOptionalLength in seconds of the NEW segment to append (2-30). Final output duration is the retained source duration plus this value.
last_imageOptionalThe last frame image for generating the video (optional). Supports URL or Base64-encoded data.
$0.82/sFLUX 3 Video Extend continues input videos into new 5-20 second clips, using prompt guidance to control the next action, camera movement, visual style, motion continuity, and optional synchronized audio at 720P / 1080P output.
$0.34/sFLUX 3 Start-End-to-Video generates 5-20 second transition videos between required start and end images, using prompt guidance to control action, camera movement, visual style, motion continuity, and optional synchronized audio at 720P / 1080P output.
$0.34/sFLUX 3 Text-to-Video generates cinematic 5-20 second videos from text prompts, with coherent motion, cinematic composition, optional synchronized audio, and 720P / 1080P output for creative videos, social content, ads, and production workflows.
$0.06/sGemini Omni 1.1 Flash Text-to-Video creates short AI videos with synchronized audio from text prompts, supporting resolutions from 360P to 4K for social content, creative storytelling, marketing videos, and production workflows.
Pick a use case, run it in the playground, copy the call.
Every plan, free included. Runs spend your account’s credits.
resolutionOptionalThe resolution of the generated video.
generate_audioOptionalGenerate audio for the new segment. Existing source audio is preserved.
enable_prompt_expansionOptionalIf set to true, the prompt optimizer will be enabled.