decklink

Plugin Information

schema_version: 0.1
title: Blackmagic Design DeckLink Output
version: 2
copyright: Copyright (C) 2011 Daniel R. Dennedy
license: LGPL
language: en
creator: Dan Dennedy
description: Output audio and video using Blackmagic Design DeckLink SDI or Intensity HDMI cards. notes: Please ensure that you use a MLT profile that is compatible with a broadcast standard which the card you are using supports.

Tags

• Audio
• Video

Bugs

• Only internal keying is supported at this time.
• Only 8-bit Y'CbCr or RGBA (key) is supported at this time.

Parameters

argument

title: Card
type: integer
readonly: no
required: no
mutable: no
default: 0
minimum: 0
widget: spinner

preroll

title: Pre-roll Count
type: integer
description: This controls the amount of buffering in the DeckLink driver/library. Increase this if you get video tearing or choppy audio. However, as you increase the amount, you increase the risk of audio and video becoming out of synchronization.
readonly: no
required: no
mutable: no
default: 3
minimum: 2
unit: frames
widget: spinner

keyer

title: Enable Keyer type: integer
description: Keying is the process of compositing MLT output over a live SDI input. The alpha channel of the MLT video controls the transparent areas, and the keyer supports alpha-blending. You can not control the compositing rectangle. Rather, the entire MLT output overlays the entire video input. Therefore, you must use MLT's compositing services to control the size and position.
readonly: no
required: no
mutable: no
default: 0
minimum: 0
maximum: 1
widget: checkbox

keyer_level

title: Key Opacity
type: float
description: This controls the level of blending between the key and the input video. 1 is fully opaque and something near 0 is transparent. However, absolute 0 is considered as "not supplied" and also fully opaque. 0.5 is an evenly balanced blending of the key and input video.
readonly: no
required: no
mutable: no
minimum: 0
maximum: 1
default: 1
widget: slider