schema_version: 0.3
type: filter
identifier: mask_apply
title: Apply a filter mask
version: 2
copyright: Meltytech, LLC
creator: Dan Dennedy
license: LGPLv2.1
language: en
tags:
  - Video
description: >
  This filter works in conjunction with the mask_start filter, which makes a
  snapshot of the frame. There can be other filters between the two, which
  are masked by the alpha channel via this filter's compositing transition.

parameters:
  - identifier: transition
    title: Transition
    description: The name of a compositing or blending transition
    type: string
    argument: yes
    default: qtblend
    mutable: yes

  - identifier: transition.*
    type: properties
    description: >
      Properties to set on the encapsulated transition

  - identifier: mlt_image_format
    title: MLT image format
    type: string
    description: Set to the same image format that the transition needs.
    mutable: yes
    default: rgba
    values:
      - yuv422
      - rgb
      - rgba
