H3 Open Weights Video-Extend appends a new cinematic continuation to an existing video. A fresh segment with native stereo audio is generated from the input video's last frame and a natural-language prompt, then the original and new segment are concatenated into a single output.
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": "minimax-h3-extend",
"input": {
"prompt": "A red fox running through fresh snow at sunrise",
"video": "https://example.com/clip.mp4"
}
}'6 fields in input, required first.
videoRequiredURL of the video to extend. The new segment is generated from its last frame and appended to the original.
promptRequiredText description of the continuation - motion, scene, and soundtrack. Audio is generated natively together with the video.
seedOptionalThe random seed to use for the generation. A negative value means a random seed will be used.
durationOptionalLength in seconds of the new segment to append.
last_imageOptional
$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.
Optional target last-frame image URL. When provided, the new segment interpolates from the input video's last frame to this image.
resolutionOptionalResolution of the new segment. 768p is the model's native canvas; 480p is a faster, lower-cost tier; 540p is a mid tier at 1.5x the 480p price. 1080p is the highest-quality full-HD tier at 2x the 768p price (generation takes longer).