Media Matte

Context: $ARGUMENTS

Quick start

• Still image → transparent PNG: rembg (default) → Step 2 recipe A.
• Very hard edges (hair, fur, glass): BiRefNet → Step 2 recipe B.
• Product photos, no humans: RMBG-2.0 → Step 2 recipe C.
• Video with a moving person: RVM (RobustVideoMatting) → Step 3.
• Composite subject onto new background: matte, then composite subcommand → Step 5.

When to use

• User says "remove background", "cut out", "no greenscreen", "matte", "transparent PNG", "alpha channel".
• Source has a subject on an arbitrary background (natural photo, phone video, product shot).
• Video has a moving subject and a per-frame rembg run flickers in the edges — use RVM for temporal coherence.
• Do NOT use for chroma-key on actual greenscreen footage — use ffmpeg-chromakey instead. A real green screen is cheaper and sharper than neural matting.
• Do NOT use for binary/hard segmentation masks for object-detection tasks — use cv-mediapipe / cv-opencv.