Take an existing character video and sync it with the motion from a reference video. This lets you update facial expressions, head turns, and speech gestures while keeping the original look and style. It’s perfect for reshooting performances, dubbing, or animating characters without re-rendering visuals.
About this model
The runway-act-two-v2v model lets you transform an existing character video by seamlessly syncing it with the motion from a reference video. This capability means that facial expressions, head turns, and speech gestures can be updated effortlessly while preserving the original look and style. Leveraging advanced video-to-video synthesis technology, the model allows for efficient performance reshoots, dubbing, and character animations without the need for re-rendering visuals.
Under the hood, this model processes two key inputs—a static character video and a dynamic reference video—to generate output that captures nuances in movement and performance. Its optimized algorithm ensures consistency in style while accurately translating the actions and emotions from the reference video. This makes it exceptionally suited for filmmakers, animators, and digital content creators looking to deliver high-quality, engaging video content at a cost-effective rate.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| muapiapp | $0.3 per generation | muapiapp offers this service at a cost that is 20-50% more affordable than competitors, without compromising on quality. |
| Fal.ai | $0.45 per generation | Priced slightly higher, Fal.ai provides a similar quality of video transformation. However, muapiapp is 20-50% more cost-effective. |
| Replicate | $0.45 per generation | Replicate offers comparable video transformation capabilities but at a 20-50% higher cost than muapiapp, making muapiapp the superior value choice. |
muapiapp offers this service at a cost that is 20-50% more affordable than competitors, without compromising on quality.
Priced slightly higher, Fal.ai provides a similar quality of video transformation. However, muapiapp is 20-50% more cost-effective.
Replicate offers comparable video transformation capabilities but at a 20-50% higher cost than muapiapp, making muapiapp the superior value choice.
* Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Video URL | string | URL of the input video. An video of your character. In the output, the character will use the reference video performance in its original static environment. | https://d3adwkbyhxyrtq.cloudfront.net/videos/186/949545949165/ae612a72-578f-4eb2-a33c-9deea0017b28.mp4 |
| Reference Video URL | string | A video URL pointing to a video of a person performing in the manner that you would like your character to perform. | https://d3adwkbyhxyrtq.cloudfront.net/videos/186/703170005884/a024ec71-10b5-4d41-ab84-2055fb3f14b3.mp4 |
| Aspect Ratio | Enum (6 options) | Aspect ratio of the output video. | 16:9 |
URL of the input video. An video of your character. In the output, the character will use the reference video performance in its original static environment.
https://d3adwkbyhxyrtq.cloudfront.net/videos/186/949545949165/ae612a72-578f-4eb2-a33c-9deea0017b28.mp4A video URL pointing to a video of a person performing in the manner that you would like your character to perform.
https://d3adwkbyhxyrtq.cloudfront.net/videos/186/703170005884/a024ec71-10b5-4d41-ab84-2055fb3f14b3.mp4Aspect ratio of the output video.
16:9Developer documentation
Prepare Your Inputs
16:9, with other options available).Input Configuration
video_url field with the URL of your character video.reference_video_url field with the URL of the performance video.aspect_ratio if a format other than the default is needed.Generate the Video
runway-act-two-v2v endpoint.Review and Iterate
Frequently asked
For best results, use high-quality videos where the character’s facial expressions and gestures are clearly visible. The reference video should closely match the desired performance style.
Yes, the model supports multiple aspect ratios such as 16:9, 9:16, 1:1, 4:3, 3:4, and 21:9. You can select the relevant aspect ratio according to your project needs.
This model is ideal for reshooting performances, dubbing characters in animations, and updating video content with new facial and motion expressions without needing to re-render the entire visual environment.
While processing times may vary based on video length and complexity, our streamlined system is designed to deliver results quickly, ensuring a smooth user experience.