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Remove a black or white matte

If you imported a clip that contains a solid black or white matte that’s premultiplied (merged into the RGB channels instead of stored in the alpha channel), you can remove the black or white background.

  1. In a Timeline panel, select the clip containing the matte you want to remove.
  2. In the Effects panel, click the triangle to expand the Video Effects bin and then click the triangle to expand the Keying bin.
  3. Drag the Remove Matte effect to the clip containing the matte.
  4. (Optional) If you’re animating the Remove Matte effect over time, make sure that the current‑time indicator is in the position you want. Click the Toggle Animation icon next to the Matte Type setting.
  5. Choose either White or Black for the Matte Type setting.
  6. (Optional) If you’re animating the Remote Matte effect, move the current‑time indicator either in the Effect Controls panel or a Timeline panel and then change the Matte Type setting in the Effect Controls panel.

    A new keyframe appears in the Effect Controls timeline when you move the handles in the Program Monitor or change the settings in the Effect Controls panel. You can also adjust the interpolation between keyframes by editing the keyframe graph. Repeat this step as needed.