Difference between revisions of "Documentation:Modules/image"

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+
== Video output ==
 +
{{Module|name=image|type=Video output|first_version=0.8.2|last_version=0.9.10|description=Outputs the video images to files}}
  
 +
In VLC 1.0.0 the image video output was rewritten into a video-filter named [[Documentation:Modules/scene|scene]], and the old image video output was removed.
 +
 +
Trivia: [https://git.videolan.org/?p=vlc/vlc-0.9.git;a=blob;f=modules/video_output/image.c#l56 the help text] was never changed after {{Commitdiff|5183b07c7c04e302af409fca4804e66777a6a040|l=this commitdiff}} changed the default values of unsigned integers <code>--image-out-width</code> and <code>--image-out-height</code> from <code>-1</code> to <code>0</code>&mdash;there was little point in fixing the help text for a deprecated module in software not yet publicly released! The coding error is absent from the current module, scene.
 +
 +
Option aliases <code>--image-width</code> for <code>--image-out-width</code> and <code>--image-height</code> for <code>--image-out-height</code> were deprecated in 0.9.0.
 +
 +
=== Options ===
 
{{Option
 
{{Option
 
|name=image-out-format
 
|name=image-out-format
|value=png, jpeg
+
|value=string
 +
|select={png,jpeg}
 
|default=png
 
|default=png
|description=Format of the output images}}
+
|description=Format of the output images
 +
}}
 
{{Option
 
{{Option
 
|name=image-out-width
 
|name=image-out-width
 
|value=integer
 
|value=integer
|default=-1
+
|default=0
|description=You can enforce the image width. By default ''-1'' VLC will adapt to the video characteristics}}
+
|description=You can enforce the image width. By default VLC will adapt to the video characteristics
 +
}}
 
{{Option
 
{{Option
 
|name=image-out-height
 
|name=image-out-height
 
|value=integer
 
|value=integer
|default=-1
+
|default=0
|description=You can enforce the image height. By default ''-1'' VLC will adapt to the video characteristics}}
+
|description=You can enforce the image height. By default VLC will adapt to the video characteristics
 +
}}
 
{{Option
 
{{Option
 
|name=image-out-ratio
 
|name=image-out-ratio
 
|value=integer
 
|value=integer
 
|default=3
 
|default=3
|description=Ratio of images to record. ''3'' means that one image out of three is recorded}}
+
|description=Ratio of images to record. ''3'' means that one image out of three is recorded
 +
}}
 
{{Option
 
{{Option
 
|name=image-out-prefix
 
|name=image-out-prefix
 
|value=string
 
|value=string
 
|default=img
 
|default=img
|description=Prefix of the output images filenames. Output filenames will have the "prefixNUMBER.format" form. Starting with VLC 0.9.0 you can also use [[Documentation:Play HowTo/Format String|format time and meta variables]]}}
+
|description=Prefix of the output images filenames. Output filenames will have the "prefixNUMBER.format" form. Starting with VLC 0.9.0 you can also use [[Documentation:Format String|format time and meta variables]]
 +
}}
 
{{Option
 
{{Option
 
|name=image-out-replace
 
|name=image-out-replace
 +
|value=boolean
 
|default=disabled
 
|default=disabled
|description=Always write to the same file}}
+
|description=Always write to the same file instead of creating one file per image. In this case, the number is not appended to the filename
 +
}}
 +
 
 +
== Demux ==
 +
{{Clear}}
 +
{{Module|name=image|type=Access demux|description=Image demuxer}}
 +
 
 +
=== Options ===
 +
{{Option
 +
|name=image-id
 +
|value=integer
 +
|default=-1
 +
|description=Set the ID of the [[elementary stream]]
 +
}}
 +
{{Option
 +
|name=image-group
 +
|value=integer
 +
|default=0
 +
|description=Set the group of the elementary stream
 +
}}
 +
{{Option
 +
|name=image-decode
 +
|value=boolean
 +
|default=enabled
 +
|description=Decode at the [[demux]]er stage
 +
}}
 +
{{Option
 +
|name=image-chroma
 +
|value=string
 +
|default=""
 +
|description=If non empty and <var>image-decode</var> is true, the image will be converted to the specified [[chroma]]
 +
}}
 +
{{Option
 +
|name=image-duration
 +
|value=float
 +
|default=10
 +
|description=Duration in seconds before simulating an end of file. A negative value means an unlimited play time
 +
}}
 +
{{Option
 +
|name=image-fps
 +
|value=string
 +
|default=10/1
 +
|description=[[Frame rate]] of the elementary stream produced
 +
}}
 +
{{Option
 +
|name=image-realtime
 +
|value=boolean
 +
|default=disabled
 +
|description=Use real-time mode suitable for being used as a master input and real-time input slaves
 +
}}
 +
 
 +
== Source code ==
 +
* {{VLCSourceFile|p=vlc/vlc-0.9.git|modules/video_output/image.c}} (video output)
 +
* {{VLCSourceFile|modules/demux/image.c}} (image demuxer)
 +
 
 +
{{Documentation footer}}

Latest revision as of 04:39, 5 April 2019

Video output

Module: image
Type Video output
First VLC version 0.8.2
Last VLC version 0.9.10
Operating system(s) all
Description Outputs the video images to files
Shortcut(s) -

In VLC 1.0.0 the image video output was rewritten into a video-filter named scene, and the old image video output was removed.

Trivia: the help text was never changed after this commitdiff changed the default values of unsigned integers --image-out-width and --image-out-height from -1 to 0—there was little point in fixing the help text for a deprecated module in software not yet publicly released! The coding error is absent from the current module, scene.

Option aliases --image-width for --image-out-width and --image-height for --image-out-height were deprecated in 0.9.0.

Options

  • image-out-format <string> {png,jpeg} : Format of the output images default value: png
  • image-out-width <integer> : You can enforce the image width. By default VLC will adapt to the video characteristics default value: 0
  • image-out-height <integer> : You can enforce the image height. By default VLC will adapt to the video characteristics default value: 0
  • image-out-ratio <integer> : Ratio of images to record. 3 means that one image out of three is recorded default value: 3
  • image-out-prefix <string> : Prefix of the output images filenames. Output filenames will have the "prefixNUMBER.format" form. Starting with VLC 0.9.0 you can also use format time and meta variables default value: img
  • image-out-replace <boolean> : Always write to the same file instead of creating one file per image. In this case, the number is not appended to the filename default value: disabled

Demux

Module: image
Type Access demux
First VLC version -
Last VLC version -
Operating system(s) all
Description Image demuxer
Shortcut(s) -

Options

  • image-id <integer> : Set the ID of the elementary stream default value: -1
  • image-group <integer> : Set the group of the elementary stream default value: 0
  • image-decode <boolean> : Decode at the demuxer stage default value: enabled
  • image-chroma <string> : If non empty and image-decode is true, the image will be converted to the specified chroma default value: ""
  • image-duration <float> : Duration in seconds before simulating an end of file. A negative value means an unlimited play time default value: 10
  • image-fps <string> : Frame rate of the elementary stream produced default value: 10/1
  • image-realtime <boolean> : Use real-time mode suitable for being used as a master input and real-time input slaves default value: disabled

Source code

This page is part of official VLC media player Documentation (User GuideStreaming HowToHacker GuideModules)
Please read the Documentation Editing Guidelines before you edit the documentation
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.