schema_version: 0.1
-type: producer # consumer, filter, producer, or transition
+type: producer
identifier: avformat
title: FFmpeg Reader
-version: 0.2.5
-copyright: Copyright (C) 2003-2008 Ushodaya Enterprises Limited
+version: 2
+copyright: Copyright (C) 2003-2011 Ushodaya Enterprises Limited
license: LGPL
language: en
url: http://www.ffmpeg.org/
contributor:
- Dan Dennedy
tags:
- - Audio # this may produce audio
- - Video # this may produce video
+ - Audio
+ - 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
- UAUOCNFDFYkIVeqBijMHQKiCAwLEDbVIPVQCUalFQggph6pUoWKRWoS6RCGJ04biOG7sOI638TJe
- xjM/FwwRfKf3vve99+kd3uNubNxgVb0Km2W7Tbt06fQLpwv4G8u3k6/88nvJcXYhnJ+dGfsRR/Dl
- 8tqpfKkZJ736d++cf6nU53Nra0utTOarVrMpdCj9XFhJr2C1sQq1pZ6ac8zNAljpi7ezzc+e5Lvx
- je29H8rlyk8DA14GAOl05tT1n6tf39uqBM69GFgAsNjvaezsvKVfuyZkKxXIi4tvknn/PCQi4cA4
- QMQf+aIv3Nvbm0sVTGe9zfDg8eGxUrk83689eFQcyhStQLluYG+/NNfny6VSsLW5Ge3pOjSHAy2e
- /4TwjP84KAfBKRzW99f59G7aAQCVav20SZQAtdlQbfGxteTuNACkd/dsguR8W9NNiKKEVFbjisUi
- BQAtnz8rFAq+LgAWDjN/IpEkk97JzYQjAdkhI2fkwtVG9X0AWN+pwTA5iJSH1qEoaMZC8tFjfv3J
- IckcdiYNk0GUZVRbXKipt5YAoP7wYZDXNKHOGKR4fCs+NbVGBpwDt3zw3VEUBbqo437qvjuXy7kr
- HbtqWQzUJgC8Ar2Dpe1UXpgZC763W+RAOAaR2tAxRTmV3kvsJJPjSrf7umEYqAoC1NnZVCAY3CLD
- 6nBpfnC+4hJc4B08DGqc1xr1l5126RzAIHAWqCjjj1wb8eHQq9uZ6nS9a4PAmaACD8bLWN16itrG
- hoJ8Ptw2TVjRKAZjsWUAIABACHk3RmOQ7BIyegbpg/1oqWGBoAc0U5BFAt20o1CqXSk26YLZM8Aa
- u5AEAwKV4XQNLHpGRq5zpRJ0QuCdmUGpUPgGAAQAoKBPJ5wTyDfzKLMyGMGntRZAmIHxMA/TTnDA
- e3FvM+siXhfMdgXjIQbmUpCvMjTa7fFG5imUdhtNSYIcCCxHx8Y6/2zgUTwNq2Nd8FIvYAHFch1d
- RmHjuhhVfdnjI1LPYVeQaw3gsMZAmYYTk+oT1SdBkiSU6z3U6k30AHR9PrhU9WYoHP7XYHR41Jpw
- TxSDQhAuzgXLtIMQG0RioFwuX3IrwiWPnUByDsKyGPxKB5S3Phj0UkgiRdMQ0FYcqBECFgj8GY7F
- 7vZvg/QDl+S66mg5fg2IATDBC45jkPgOJhODLa8dN4d8BJQKYN06RgfF/eNTibRpWVcdsg2MV1An
- FJrbDfXEiWxEVdf/ZxCPxVvTnmkjqgzB4p0gMGGnPUyMjUANupNusXNHpDxYt4wR1XtrKBq9a3W0
- B047hSg7ofUIxMlJePz+K0d/FjmahLyh146rzyUNw0Jby8LGWvckSbwcjUayx1RpzWZWELR3jZln
- Eh8CwDFVgcLr4HpNVDtMi588ecEbCHx7dKZwNBkODed+W318Zipk3Rx1iTG9GbwYiUQMAAj53Zef
- 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
+bugs:
- 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).
+ More than 2 channels of audio more than 16 bits is not supported.
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
+ title: File/URL
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
+ For example, video4linux2:/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.
+ Use 'f-list' to see a list of supported file formats.
+ Use 'vcodec-list' to see a list of supported video decoders.
+ Use 'acodec-list' to see a list of supported audio decoders.
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
+ 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)
+ description: >
+ Choose the index of audio stream to use (-1 is off).
+ When this value is equal to the maximum size of a 32-bit signed integer
+ or the string "all" then all audio tracks are coalesced into a bundle of
+ channels on one audio track.
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
+ title: Video index
type: integer
description: Choose the index of video stream to use (-1 is off)
readonly: no
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
+ title: Decoding threads
type: integer
description: Choose the number of threads to use in the decoder(s)
readonly: no
unit: threads # the unit is a label that appears after the widget
- identifier: force_aspect_ratio
- title: Sample Aspect Ratio
+ title: Sample aspect ratio
type: float
description: Optionally override a (mis)detected aspect ratio
readonly: no
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
+ 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.
+ - identifier: seekable
+ title: Supports seeking
+ description: if the resource can seek
readonly: yes
- - identifier: length
- title: Duration
- type: time
- description: duration
+ - identifier: width
+ title: Width
+ type: integer
+ unit: pixels
readonly: yes
- widget: timecode
- - identifier: seekable
- title: Supports Seek
+ - identifier: height
+ title: Height
type: integer
- description: if the resource can seek
+ unit: pixels
readonly: yes
+
+ - identifier: noimagecache
+ title: Disable image caching
+ type: integer
+ minimum: 0
+ maximum: 0
+ default: 0
+ widget: checkbox
+
+ - identifier: cache
+ title: Number of images cache
+ type: integer
+ description: >
+ By default, this producer caches images to facilitate YADIF deinterlace,
+ which needs previous and next frames. Also, caching helps with frame-
+ stepping within a player. The default number of images cached is supplied
+ by the MLT framework, which is currently 4, but you can override it
+ with this property. You can also disable caching by setting it to 0.
+ If you are using parallel processing with YADIF deinterlacing, then
+ you might need to increase caching to prevent inadvertent backward seeks.
+ One can also set this value globally for all instances of avformat by
+ setting the environment variable MLT_AVFORMAT_CACHE.
+
+ - identifier: force_progressive
+ title: Force progressive
+ description: When provided, this overrides the detection of progressive video.
+ type: integer
+ minimum: 0
+ maximum: 1
+ widget: checkbox
+
+ - identifier: force_tff
+ title: Force top field first
+ description: When provided, this overrides the detected field order of interlaced video.
+ type: integer
+ minimum: 0
+ maximum: 1
+ widget: checkbox
+
+ - identifier: force_fps
+ title: Force frame rate
+ description: When provided, this attempts to override the detected frame rate of the video.
+ type: integer
+ minimum: 0
+ maximum: 1
+ widget: checkbox
+
+ - identifier: force_colorspace
+ title: Force colorspace
+ description: When provided, this overrides the detected colorspace of the video (Y'CbCr only).
+ type: integer
+ values:
+ - 240 # SMPTE 240M
+ - 601 # ITU-R BT.601
+ - 709 # ITU-R BT.709
+
+ - identifier: video_delay
+ title: Video delay
+ description: >
+ Manually adjust A/V synchronization.
+ A negative value advances the video instead of delaying it.
+ type: float
+ default: 0
+ unit: seconds
+ widget: timecode
+
+ - identifier: reconnect
+ title: Automatically reconnect?
+ description: >
+ Whether to attempt to automatically reconnect to a live source when a
+ read failure occurs.
+ type: integer
+ minimum: 0
+ maximum: 1
+ widget: checkbox
+
+ - identifier: exit_on_disconnect
+ title: Exit upon disconnection?
+ description: >
+ When this is set, the program will terminate with an error if a live source
+ becomes disconnected.
+ type: integer
+ minimum: 0
+ maximum: 1
+ widget: checkbox
projects / mlt / blobdiff