schema_version: 0.1
type: producer # consumer, filter, producer, or transition
identifier: avformat
title: FFmpeg Reader
version: 0.2.5
copyright: Copyright (C) 2003-2014 Meltytech, LLC
license: LGPL
language: en
url: http://www.ffmpeg.org/
creator: Charles Yates
contributor:
- Dan Dennedy
tags:
- Audio # this may produce audio
- Video # this may produce video
description: Read an audio and/or video file using FFmpeg
icon:
filename: avformat/producer.png # relative to $MLT_DATA/modules/
content-type: image/png
content-encoding: base64 # could also be hex or none if inline SVG
content: |
iVBORw0KGgoAAAANSUhEUgAAABgAAAAPCAYAAAD+pA/bAAAABmJLR0QA/wD/AP+gvaeTAAAACXBI
WXMAAAsSAAALEgHS3X78AAAAB3RJTUUH1gsBEgMLZIL+swAAAB10RVh0Q29tbWVudABDcmVhdGVk
IHdpdGggVGhlIEdJTVDvZCVuAAAEgUlEQVQ4y2VUSWwbZRT+5p/xP4v3eIntceLEThOylKgkB070
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xjM/FwwRfKf3vve99+kd3uNubNxgVb0Km2W7Tbt06fQLpwv4G8u3k6/88nvJcXYhnJ+dGfsRR/Dl
8tqpfKkZJ736d++cf6nU53Nra0utTOarVrMpdCj9XFhJr2C1sQq1pZ6ac8zNAljpi7ezzc+e5Lvx
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H2u/Ua16L4ZCgykA8A94vn/W1DdH3dK0wIdXwkNDH+E/+Avfv/E5LPIz8wAAAABJRU5ErkJggg==
notes: Implementation or additional usage notes go here.
bugs: # this can be just for documentation, or the tool may disclose it to help user avoid pitfalls
- Audio sync discrepancy with some content.
- Not all libavformat supported formats are seekable.
- >
Seeking is not always accurate. Sometimes it doesn't seek to I-frames so you
may get junk for a few frames.
- >
Fails to play beyond first frame of video of sources with PTS not starting
at 0 (video4linux).
parameters:
- identifier: argument # 'argument' is a reserved name for a value supplied to the factory
title: File # the title can be used as a label for the widget
type: string
description: |
A file name specification or URL in the form:
[{protocol}|{format}]:{resource}[?{format-parameter}[&{format-parameter}...]]
For example, video4linux:/dev/video1?width:320&height:240
Note: on the bash command line, & must be escaped as '\&'.
Also, note the use of ':' instead of '=' for parameters.
Use 'ffmpeg -formats' to see a list of supported protocols and formats.
readonly: no
required: yes
mutable: no
widget: fileopen # could provide a button to use a file-open dialog
- identifier: audio_index # the name is the mlt_properties name
title: Audio Index
type: integer
# the description can be used in a tool tip
description: Choose the index of audio stream to use (-1 is off)
readonly: no
mutable: no
minimum: -1
# when maximum not specified, the scalar limit is used
default: 0
widget: spinner
- identifier: video_index
title: Video Index
type: integer
description: Choose the index of video stream to use (-1 is off)
readonly: no
mutable: no
minimum: -1
default: 0
widget: spinner
- identifier: in
title: In Point
type: time # time is not implemented, but it will correspond to the mlt_position replacement
description: Set the start time offset to use within the clip
readonly: no
mutable: no
minimum: 0
default: 0
widget: timecode # this is a special form of time value/code entry (e.g. see Kino)
- identifier: out
title: Out Point
type: time
description: Set the ending time offset to use within the clip
readonly: no
minimum: 0
mutable: no
widget: timecode # as opposed to time, which could be confused for a wallclock-style time widget
- identifier: threads
title: Decoding Threads
type: integer
description: Choose the number of threads to use in the decoder(s)
readonly: no
mutable: no
minimum: 0
maximum: 4
default: 1
widget: spinner
unit: threads # the unit is a label that appears after the widget
- identifier: force_aspect_ratio
title: Sample Aspect Ratio
type: float
description: Optionally override a (mis)detected aspect ratio
readonly: no
mutable: yes
minimum: 0.001 # just a UI suggestion
maximum: 9.999 # just a suggestion
# no default property means it should be blank in the UI and not applied unless provided
- identifier: resource
title: File
type: string
description: file or protocol specification
readonly: yes
- identifier: source_fps
title: Frame Rate
type: float
scale: 2 # scale is the number of digits to display after the decimal point
description: the framerate of the resource
readonly: yes
unit: frames/second
- identifier: aspect_ratio
title: Sample Aspect Ratio
type: float
description: >
The sample aspect ratio of the resource.
This is determined on every frame read.
readonly: yes
- identifier: length
title: Duration
type: time
description: duration
readonly: yes
widget: timecode
- identifier: seekable
title: Supports Seek
type: integer
description: if the resource can seek
readonly: yes
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