subject-follow — Video Segmentation AI Model

Click a person on the first frame and the crop follows that one person for the whole clip, delivered vertical at 1080x1920 with the audio kept. Built for a fixed wide stage shot where several people are on screen and you want a single-subject cut of one of them. Tracking is by instance, so the crop stays on the person you picked when they cross in front of someone else.

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Details

  • CategoryVideo Segmentation
  • Year2026
  • LicenseCustom (SAM License)

Compliance & Provenance

  • ProviderMeta (open) · Specialized
  • EU AI Act RiskMinimal Risk
  • Art. 50 TransparencyNot applicable

Inputs & Outputs

  • VideoInput · video

    Source video. A fixed wide shot with no cuts works best; 4K is worth it because the crop is taken from the source.

  • VideoOutput · video

    1080x1920 vertical video following the selected person, with the source audio.

Tags

  • video
  • tracking
  • vertical
  • 9:16
  • shorts
  • crop
  • single-subject

Alternatives in Video Segmentation

  • SAM3.1 (Video)

    Language-prompted video segmentation and tracking — SAM 3.1 Object Multiplex. Up to 16 objects tracked jointly. 1-3 min per 200 frames.

Resources