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AISVIT / AI Video / Video to Video

Grok Video Extension | Video to Video Continuation

Use Grok Imagine Video Extension in video-to-video mode to continue a short MP4 clip from its last frame using a text instruction.

About this model

xAI video-to-video model for extending a short clip from its final frame with a text instruction.

Video to Video mode

In this mode the model edits, extends, or restyles an uploaded source video. Below are the parameters that Grok Imagine Video Extension supports in this specific mode.

Grok Imagine Video Extension parameters in Video to Video mode

  • prompt — required
  • video — required
  • duration — default: 6

Best fit tasks

  • Continuing a short product, social, teaser, or storyboard clip without restarting the scene from scratch.
  • Adding a next beat to footage when the first clip already has the right subject, camera angle, and mood.
  • Testing alternate endings or follow-up actions from the same source video.

Main advantages

  • The uploaded video controls the starting point because the extension begins from the last frame.
  • Pricing is predictable at 5 credits per second of generated extension.
  • The dedicated extension workflow keeps this route separate from broad video remixing.

Limitations to know

  • The source video must be short: Replicate describes the accepted range as 2-15 seconds.
  • The model extends what already exists, so source quality, framing, and the last frame strongly affect the result.
  • It is not meant for long-form editing or frame-perfect continuity.

Simple workflow

  1. Upload a short MP4 source video with a clear final frame.
  2. Describe only what should happen next: action, camera behavior, mood, and any important sound or atmosphere.
  3. Choose the extension length from 2 to 10 seconds.
  4. Start with 4-6 seconds for testing, then increase duration only when the continuation is stable.

Input formats

  • MP4 source video; Replicate notes H.264, H.265, or AV1 codec support.

Output

  • Generated video extension returned as a video URL.

Mode catalog

More Video to Video models

AISVIT pricing details

  • Fixed rate: 5 credits per second
  • Default 6 second extension = 30 credits
  • 10 second extension = 50 credits