Quick start

• Load a video: Upload your own or pick an example below.
• Checkpoint: Tiny / Small / Base+ / Large (trade speed vs. accuracy).
• Points mode: Select an Object ID and point label (positive/negative), then click the frame to add guidance. You can add multiple points per object and define multiple objects across frames.
• Boxes mode: Click two opposite corners to draw a box. Old inputs for that object are cleared automatically.

Working with results

• Preview: Use the slider to navigate frames and see the current masks.
• Propagate: Click “Propagate across video” to track all defined objects through the entire video. The preview follows progress periodically to keep things responsive.
• Export: Render an MP4 for smooth playback using the original video FPS.
• Note: More info on the Hugging Face 🤗 Transformers implementation of SAM2 can be found here.