Difference between revisions of "Documentation:Modules/marq"

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{{Module|name=marq|type=Video subfilter|description=Overlays text on the video}}
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{{Module|name=marq|type=Video sub-filter|first_version=0.8.0|description=Overlays text on the video|sc=marq|sc2=time}}
  
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The marq subfilter can be used to display text on a video.
+
The ''marq'' subtitle filter can be used to display text on a video. The {{docmod|time}} filter was merged with this filter in version 0.9.0, adding time [[Documentation:Format String|format string]] recognition. There are two methods of specifying position: coordinate and (since VLC 0.9.0) [[#marq-position|numbered positions]].
  
 
== Options ==
 
== Options ==
−
 
+
<onlyinclude>{{Option
−
{{Option
 
 
|name=marq-marquee
 
|name=marq-marquee
 
|value=string
 
|value=string
 
|default=VLC
 
|default=VLC
−
|description=Marquee text to display. Since VLC version 0.9.0 you can use [[Documentation:Play_HowTo/Format_String|format strings]] to display meta data and time information}}
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|description=Marquee text to display.
−
 
+
}}
 +
{{Option
 +
|name=marq-file
 +
|value=string
 +
|default=NULL
 +
|description=File to read the marquee text from.
 +
}}<noinclude>
 +
=== Position ===
 +
</noinclude>
 
{{Option
 
{{Option
 
|name=marq-x
 
|name=marq-x
 
|value=integer
 
|value=integer
−
|default=-1
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|default=0
−
|description=X offset from upper left corner. This is only if both marq-x and marq-y are positive
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|description=X offset, from the left screen edge.
 
}}
 
}}
−
 
 
{{Option
 
{{Option
 
|name=marq-y
 
|name=marq-y
 
|value=integer
 
|value=integer
 
|default=0
 
|default=0
−
|description=Y offset from upper left corner. This is only if both marq-x and marq-y are positive
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|description=Y offset, down from the top.
 
}}
 
}}
−
 
 
{{Option
 
{{Option
−
|name=position
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|name=marq-position<span id="marq-position"></span>
 
|value=integer
 
|value=integer
−
|default=5
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|default=-1
−
|description=Marquee position: 0=center, 1=left, 2=right, 4=top, 8=bottom, you can also use combinations of these values, eg 6 = top-right. This is only used if marq-x or marq-y are negative
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|description=Marquee position: 0=center, 1=left, 2=right, 4=top, 8=bottom, you can also use combinations of these values, eg 6 = top-right.
−
}}
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}}<noinclude>
−
 
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=== Font ===
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{{Option
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</noinclude>{{Option
 
|name=marq-opacity
 
|name=marq-opacity
 
|value=integer
 
|value=integer
 +
|min=0
 +
|max=255
 
|default=255
 
|default=255
−
|description=Marquee opacity. 0 is transparent, 255 is fully opaque.
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|description=Opacity (inverse of transparency) of overlaid text. 0 {{=}} transparent, 255 {{=}} totally opaque.
 
}}
 
}}
−
 
 
{{Option
 
{{Option
−
|name=marq-color
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|name=marq-color<span id="marq-color"></span>
 
|value=integer
 
|value=integer
−
|default=16777215 (0xFFFFFF, white)
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|select={ 0x000000, 0x808080, 0xC0C0C0, 0xFFFFFF, 0x800000, 0xFF0000, 0xFF00FF, 0xFFFF00, 0x808000, 0x008000, 0x008080, 0x00FF00, 0x800080, 0x000080, 0x0000FF, 0x00FFFF }
−
|description=Marquee color. Use the decimal value of the HTML color code.
+
|default=0xFFFFFF
 +
|description=Color<noinclude><sup>('''[[#appendix_marq-color|key]]''')</sup></noinclude> of the text that will be rendered on the video. This must be an hexadecimal (like HTML colors). The first two chars are for red, then green, then blue.
 
}}
 
}}
−
 
 
{{Option
 
{{Option
 
|name=marq-size
 
|name=marq-size
 
|value=integer
 
|value=integer
−
|default=-1
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|min=0
−
|description=Font size in pixels. -1 uses the default font size
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|max=4096
−
}}
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|default=0
−
 
+
|description=Font size, in pixels. 0 uses the default font size.
−
{{Option
+
}}<noinclude>
 +
=== Misc ===
 +
</noinclude>{{Option
 
|name=marq-timeout
 
|name=marq-timeout
 
|value=integer
 
|value=integer
 
|default=0
 
|default=0
−
|description=Number of millitseconds the marquee must remain displayed. 0 means forever.
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|description=Number of milliseconds the marquee must remain displayed. 0 means forever.
 
}}
 
}}
 +
{{Option
 +
|name=marq-refresh
 +
|value=integer
 +
|default=1000
 +
|description=Number of milliseconds between string updates. This is mainly useful when using meta data or time [[Documentation:Format String|format string]] sequences.
 +
}}</onlyinclude>
  
 
== Examples ==
 
== Examples ==
  
−
Example command line use '''(VLC 0.9.0 and above)''':
+
=== Versions 2.0 and later ===
−
  % '''vlc --sub-filter "marq{marquee=\$t (\$P%%),color=16776960}:marq{marquee=%H:%m%s,position=6}" somevideo.avi'''
+
 
−
  % '''vlc --sub-filter 'marq{marquee=$t ($P%%),color=16776960}:marq{marquee=%H:%m%s,position=6}' somevideo.avi'''
+
Example command line use '''(VLC 2.0.0 and newer)''':
−
:This command line will show the stream's title ($t) and current position ($P) in the upper left corner and the current time in the upper right corner. Note that we have to escape $ characters when running this from command line in UNIX shells (this is why we use \$ instead of $). The second line uses single quotes to delimit the string so we don't need to escape the $ character.
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  {{%}} vlc '--sub-source=marq{marquee="%Y-%m-%d,%H:%M:%S",position=9,color=0xFFFF00,size=12}' somevideo.avi
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:On windows the command line would be:
+
This example displays the current date and time in yellow in the top left corner of video.
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  C:\Program Files\VideoLAN\VLC\>'''vlc.exe --sub-filter=marq{marquee=$t ($P%%),color=16776960}:marq{marquee=%H:%m%s,position=6} somevideo.avi'''
+
 
 +
The equivalent long form would be;
 +
{{%}} vlc --sub-source=marq --marq-marquee="%Y-%m-%d,%H:%M:%S" --marq-position=9 --marq-color=0xFFFFFF --marq-size=12 somevideo.avi
 +
 
 +
=== Versions 0.9.0 to 1.1.13 ===
 +
  {{$}} vlc --sub-filter 'marq{marquee=$t ($P%%),color=0xFFFF00}:marq{marquee=%H:%M:%S,position=6}' somevideo.avi
 +
This command line will show the stream's title (<code>$t</code>) and current position (<code>$P</code>) in the upper left corner and the current time in the upper right corner. The <u>''single''</u> quotes <code>'</code> enclose our <code>$</code> characters to prevent them from being interpreted as Bash variables.<br />
 +
On Windows the command line would be:
 +
  {{Prompt|cmd}} {{Path to VLC|windows}} --sub-filter=marq{marquee=$t ($P%%),color=0xFFFF00}:marq{marquee=%H:%m%s,position=6} somevideo.avi
 +
 
 +
 
 +
== Gallery ==
 +
<gallery>
 +
File:Marq demonstration - VLC 3.0.6 Linux.png|Marq can be chained, allowing several marquees to be displayed at the same time.|alt=Marq can be chained, allowing several marquees to be displayed at the same time. Nine positions and text colours are shown against a black background.
 +
</gallery>
 +
 
 +
== See also ==
 +
* [[Documentation:Format String]]
 +
* [[Documentation:Modules/rss]]
  
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Example command line '''(VLC 8.6a and prior)''':
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== Source code ==
−
% '''vlc --sub-filter=marq --marq-marquee="Obvious Watermark" --marq-position=0 --marq-size=50 --marq-opacity=25 --marq-color=32768 somevideo.avi'''
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* {{VLCSourceFile|modules/spu/marq.c}}
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:This command will show centered transparent green text. Text sized too large to fit the video window will not appear, and may crash VLC.
+
* {{VLCSourceFile|p=vlc/vlc-0.8.git|modules/video_filter/marq.c}}
  
 +
== Appendix ==
 +
<div class="plainlist">
 +
*^ [[#marq-color|--marq-color]]<span id="appendix_marq-color"></span>
 +
</div>
 +
{{Colour mapping}}
  
−
{{Stub}}
+
{{Documentation footer}}

Latest revision as of 14:44, 10 May 2020

Module: marq
Type Video sub-filter
First VLC version 0.8.0
Last VLC version -
Operating system(s) all
Description Overlays text on the video
Shortcut(s) marq, time

The marq subtitle filter can be used to display text on a video. The time filter was merged with this filter in version 0.9.0, adding time format string recognition. There are two methods of specifying position: coordinate and (since VLC 0.9.0) numbered positions.

Options

  • marq-marquee <string> : Marquee text to display. default value: VLC
  • marq-file <string> : File to read the marquee text from. default value: NULL

Position

  • marq-x <integer> : X offset, from the left screen edge. default value: 0
  • marq-y <integer> : Y offset, down from the top. default value: 0
  • marq-position <integer> : Marquee position: 0=center, 1=left, 2=right, 4=top, 8=bottom, you can also use combinations of these values, eg 6 = top-right. default value: -1

Font

  • marq-opacity <integer [0 .. 255]> : Opacity (inverse of transparency) of overlaid text. 0 = transparent, 255 = totally opaque. default value: 255
  • marq-color <integer> { 0x000000, 0x808080, 0xC0C0C0, 0xFFFFFF, 0x800000, 0xFF0000, 0xFF00FF, 0xFFFF00, 0x808000, 0x008000, 0x008080, 0x00FF00, 0x800080, 0x000080, 0x0000FF, 0x00FFFF } : Color(key) of the text that will be rendered on the video. This must be an hexadecimal (like HTML colors). The first two chars are for red, then green, then blue. default value: 0xFFFFFF
  • marq-size <integer [0 .. 4096]> : Font size, in pixels. 0 uses the default font size. default value: 0

Misc

  • marq-timeout <integer> : Number of milliseconds the marquee must remain displayed. 0 means forever. default value: 0
  • marq-refresh <integer> : Number of milliseconds between string updates. This is mainly useful when using meta data or time format string sequences. default value: 1000

Examples

Versions 2.0 and later

Example command line use (VLC 2.0.0 and newer): 

% vlc '--sub-source=marq{marquee="%Y-%m-%d,%H:%M:%S",position=9,color=0xFFFF00,size=12}' somevideo.avi

This example displays the current date and time in yellow in the top left corner of video.

The equivalent long form would be; 

% vlc --sub-source=marq --marq-marquee="%Y-%m-%d,%H:%M:%S" --marq-position=9 --marq-color=0xFFFFFF --marq-size=12 somevideo.avi

Versions 0.9.0 to 1.1.13

$ vlc --sub-filter 'marq{marquee=$t ($P%%),color=0xFFFF00}:marq{marquee=%H:%M:%S,position=6}' somevideo.avi

This command line will show the stream's title ($t) and current position ($P) in the upper left corner and the current time in the upper right corner. The single quotes ' enclose our $ characters to prevent them from being interpreted as Bash variables.
On Windows the command line would be: 

> "%PROGRAMFILES%\VideoLAN\VLC\vlc.exe" --sub-filter=marq{marquee=$t ($P%%),color=0xFFFF00}:marq{marquee=%H:%m%s,position=6} somevideo.avi


Gallery

  • Marq can be chained, allowing several marquees to be displayed at the same time. Nine positions and text colours are shown against a black background.

    Marq can be chained, allowing several marquees to be displayed at the same time.

See also

Source code

Appendix

Colour key
Sample Colour Hex code
Black 0x000000
Gray 0x808080
Silver 0xC0C0C0
White 0xFFFFFF
Maroon 0x800000
Red 0xFF0000
Fuchsia 0xFF00FF
Yellow 0xFFFF00
Olive 0x808000
Green 0x008000
Teal 0x008080
Lime 0x00FF00
Purple 0x800080
Navy 0x000080
Blue 0x0000FF
Aqua 0x00FFFF
This page is part of official VLC media player Documentation (User Guide • Streaming HowTo • Hacker Guide • Modules)
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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.
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