Create a 5- or 10-second video by describing the subject, action, environment, lighting and camera movement. Runway Gen-4.5 on Vidgo accepts a text prompt and an optional single reference image in the same task. Use 16:9 or 9:16 for text-only generation; provide a reference image to also use 4:3, 3:4, 1:1 or 21:9. Choose the duration around the action you want to show and review the complete clip against your brief.
Runway Gen-4.5 is developed by Runway. Vidgo provides access to the model. Model names and trademarks belong to their respective owners.Open the existing Runway Gen-4.5 task to write a shot brief and select the clip duration. Add one source image when you want to provide visual guidance for the subject or scene. Both workflows use runway-gen-4.5, keeping the prompt, image and output controls together.
For text-only generation, describe what appears, how it moves and how the camera observes it, then choose 16:9 or 9:16. For image-guided generation, provide one accessible image URL and explain the intended motion or scene development. Image guidance enables six supported ratios. Use a 5-second duration for a compact action or 10 seconds when the shot needs more time to develop.
| Model / task | Input and workflow |
|---|---|
| Runway Gen-4.5 | Runway Gen-4.5 is a high-fidelity video model focused on prompt adherence, cinematic motion, visual fidelity, and optional reference image guidance. |
The two published PoYo examples use separate 10-second, 16:9 text requests: a paper boat drifting through a home and a suited fox riding a motorbike. Their original videos and complete prompts are shown below. The other panels identify the existing task illustration, the paper-boat brief and its saved settings so each visual has a clear source.
The paper-boat example asks for a continuous shot following a folded white boat carrying a yellow flower through a quiet interior. Specify the moving subject, its path and the environment, then inspect the clip for the requested action and its progression.
The fox example describes a straw boater hat, tailored suit, small motorbike, dusty rural road and stop-motion cinematic treatment. Put the character’s visible details and activity into the same prompt, then review how the result presents the outfit, vehicle and setting.
The current task accepts one optional reference image. Choose an image that clearly shows the intended subject or setting, then describe the motion you want to introduce. The panel uses the existing task illustration; the two public video cases below are text-only demonstrations.
A continuous cinematic shot follows a folded white paper boat carrying a small yellow flower as water carries it across a quiet home interior.
Name the subject and describe its movement, location and camera treatment together. The displayed paper-boat brief provides the original example instruction, including the continuous shot, flower and home interior. Use that structure when preparing a different subject and action.
{
"duration": 10,
"aspect_ratio": "16:9"
}Select 5 or 10 seconds and use the ratio supported by your input mode. Text-only requests support 16:9 and 9:16; requests with one reference also support 4:3, 3:4, 1:1 and 21:9. An optional integer seed can be included in the request when recording generation settings.
These public PoYo playground pairs preserve the original text prompts and CDN videos. Both request 10 seconds at 16:9. In the first, inspect the paper boat, yellow flower and movement through the interior; in the second, inspect the fox’s costume, motorbike, rural setting and stop-motion treatment. Each clip illustrates its own creative brief.
A continuous cinematic shot follows a folded white paper boat carrying a small yellow flower as water carries it across a quiet home interior.
A dapper country fox in a straw boater hat and tailored suit rides a small motorbike down a dusty rural road in a stop-motion cinematic style.
Prepare a focused shot brief and, when useful, one source image. Generate a short clip, review its motion and composition, and use the selected result to explore a scene, presentation or content direction. Choose the duration and framing around the intended placement.
Prepare a subject, action and camera brief, then generate a 5- or 10-second clip. Review the movement and framing to discuss a scene before planning a larger video sequence.
Describe the character’s costume, activity and environment in a complete prompt. Use the generated clip to explore a narrative character or the visual direction of an animated concept.
Prepare one image showing the intended subject or location and explain how it should move or develop. Inspect the resulting clip against both the source and motion brief for a design or storytelling iteration.
Write a focused shot brief and choose 16:9 for text generation. Use the result as a short visual draft in a presentation, a scene proposal or a landscape content layout.
Prepare an action that reads clearly in a tall frame and select 9:16. Review subject placement and movement before using the clip to develop a portrait-format content idea.
Supply one reference image and choose an accepted ratio, including square or wider formats when appropriate. Describe the intended motion and inspect the generated crop and composition for the destination layout.
The table reads the current 5-second and 10-second video tiers from the model catalog. The selected duration determines the task’s duration-based charge; review the matching tier and the online request estimate before generation. The displayed starting rate is the lowest current tier, while a 10-second request uses its own listed price. Use the complete request cost when budgeting several shot iterations.
| Model | Provider | Workflow | Input material | Output specification | Starting rate |
|---|---|---|---|---|---|
| Runway Gen-4.5 | Runway | Text / image-guided video | Text prompt and optional single reference image | 5 / 10 seconds | $0.375 / video |
Test a complete creative brief online, then bring the verified request into your application.
Enter the subject, action and camera direction, select duration and aspect ratio, and review the estimate. For image guidance, upload one JPEG, PNG or WebP file within 10 MiB. Generate the clip and watch the complete result to inspect motion, framing and the requested visual details.
Use the existing task page, current price information, task documentation and generation history to move from a creative test to an API workflow.
Open the Runway Gen-4.5 task, write a focused shot brief and choose 5 or 10 seconds. Use text-only generation with 16:9 or 9:16, or add one reference image for image guidance and the additional supported ratios.
Enter the subject, action and camera direction, select duration and aspect ratio, and review the estimate. For image guidance, upload one JPEG, PNG or WebP file within 10 MiB. Generate the clip and watch the complete result to inspect motion, framing and the requested visual details.
The table reads the current 5-second and 10-second video tiers from the model catalog. The selected duration determines the task’s duration-based charge; review the matching tier and the online request estimate before generation. The displayed starting rate is the lowest current tier, while a 10-second request uses its own listed price. Use the complete request cost when budgeting several shot iterations.
Open the task documentation and review authentication, the model identifier, required inputs, accepted output settings and response fields. For reference inputs, prepare accessible, directly downloadable HTTP(S) image URLs. Carry the tested prompt and settings into your request.
Send the authenticated request with the matching model identifier and input object. Retain the returned task ID so your application can track this generation. Provide a callback URL when your application is ready to receive task notifications.
Use the task ID to query status, or handle the configured callback. When the task finishes, retrieve the generated file URLs, save the result for your project and compare it with the original brief. Revisit online generations in your account history when refining the next request.
It is a short-video generation task using the runway-gen-4.5 model identifier. Describe a shot in text and optionally provide one reference image. The current task supports 5- and 10-second durations, input-dependent aspect ratios and an optional integer seed.
Read model introductions, API guides and platform comparisons to understand creative inputs, integration choices and generation costs.
