/usr/share/mlt/decklink/producer_decklink.yml is in libmlt-data 6.4.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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type: producer
identifier: decklink
title: Blackmagic Design DeckLink Capture
version: 1
copyright: Copytight (C) 2011 Daniel R. Dennedy
license: LGPL
language: en
creator: Dan Dennedy
tags:
- Audio
- Video
description: >
Capture video and audio 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. If you must use an interlaced
profile but wish to deinterlace or scale the input, then you must use the
consumer producer, e.g.:
melt -profile square_pal consumer:decklink: profile=dv_pal
bugs:
- It is incompatible with the yadif deinterlacer.
- Transport controls such as seeking has no affect.
- External deck control is not implemented.
- Only 8-bit Y'CbCr is supported at this time.
parameters:
- identifier: argument
title: Card
type: integer
default: 0
minimum: 0
widget: spinner
- identifier: channels
title: Audio channels
type: integer
default: 2
minimum: 2
maximum: 16
widget: spinner
- identifier: buffer
title: Maximum buffer
description: >
There is a queue of frames between this plugin and its consumer.
If the consumer has a little, intermittent delay then it reduces the
risk of dropping a frame. However, this provides a maximum number of
frames that can be buffered to prevent consuming memory unbounded in
the case of frequent or sustained delays.
type: integer
default: 25
minimum: 0
unit: frames
widget: spinner
- identifier: prefill
title: Initial buffer
description: Initially fill the buffer with a number of frames.
type: integer
default: 25
minimum: 0
unit: frames
widget: spinner
- identifier: vanc
title: Vertical ancillary capture
description: >
Captures vertical ancillary data as image data and places it at the top
of the visible/active image.
You can either set the number of lines to capture or use -1 for automatic
(32 lines) mode.
type: integer
minimum: -1
default: 0
unit: lines
widget: spinner
- identifier: preview
title: Enable preview
description: Support preview monitoring when paused (speed = 0).
type: integer
minimum: 0
maximum: 1
default: 0
widget: checkbox
- identifier: devices
title: Number of devices
type: integer
readonly: yes
minimum: 0
- identifier: device.*
title: Device model
description: The model name of each device that accepts input.
type: string
readonly: yes
- identifier: priority
title: Thread priority
description: Set the DeckLink thread's scheduling class to realtime and its priority.
type: integer
minimum: 1
maximum: 99
default: 20
- identifier: vitc_in
title: Start timecode
type: integer
description: >
The vertical interval timecode (VITC) in binary-coded decimal (BCD) format.
It skips frames that has VITC timecode less then specified.
After reaching first frame with timecode greater or equal then specified this
property is reset to zero.
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