Difference between revisions of "Browser plugins"

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m (correct/refine ambiguous header - 'Updated Version! Use the information in this header')
(Flash Player: no webcam, or low webcam resolution: Flash has supported V4L2 since v10 https://helpx.adobe.com/flash-player/release-note/readme-flash-player-linux.html)
 
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[[Category:Desktop]]
+
[[Category:Web browser]]
 +
[[de:Browser Plugins]]
 +
[[es:Browser plugins]]
 +
[[fr:Plugins navigateur]]
 +
[[ja:ブラウザプラグイン]]
 +
[[ru:Browser plugins]]
 +
[[zh-hans:Browser plugins]]
 +
{{Related articles start}}
 +
{{Related|Opera}}
 +
{{Related|Firefox}}
 +
{{Related|Chromium}}
 +
{{Related articles end}}
  
{{i18n_links_start}}
+
There are two types of browser plugins, based on the plugin API they
{{i18n_entry|English|Mozilla and Mozilla Firefox browser plugins}}
+
use:
{{i18n_entry|简体中文|Flash 和 Adobe Acrobat 浏览器插件}}
+
*Netscape plugin API (NPAPI): these plugins work in most smaller browsers ([[Firefox#Plugins|Firefox supports only the Flash Player plugin]], Chromium and Opera do '''not''' support these plugins).
{{i18n_links_end}}
+
*Pepper plugin API (PPAPI): these plugins work in [[Chromium]] (and Chrome), [[Opera]] and [[Vivaldi]].
  
= Updated Information for new installations! Use the information in this section=
+
Most plugins on this page are NPAPI-only, unless noted otherwise.
==Java, Adobe Reader, Flash==
 
===For Adobe Acrobat Reader, Flash, and Java plugins===
 
pacman -S flashplugin acroread j2re
 
  
That should work!
+
== Flash Player ==
('''*Note for Arch64:''' j2re will still not work for your browser - at this point in time (Oct 13 2006), there is still no support in jre-64 for java applets... See http://java.com/en/download/manual.jsp#note)
 
  
=== Sound issues ===
+
=== Adobe Flash Player ===
  
If sound is not working in flash movies, install & run the enlightment sound daemon:
+
==== Installation ====
  
pacman -S esd
+
The package you will need to install depends on the browser you use.
esd &
 
  
(You might want to use a script to run esd at startup)
+
* The NPAPI version can be [[install]]ed with the {{Pkg|flashplugin}} package.
 +
* The PPAPI version can be [[install]]ed with the {{Pkg|pepper-flash}} package.
  
= Old information for reference on old installations... Or whatever (OUTDATED)=
+
{{Note|
 +
* Some Flash apps may require the {{AUR|ttf-ms-fonts}} package in order to properly render text.
 +
* The {{AUR|freshplayerplugin}} package provides an ''experimental'' adapter to use {{Pkg|pepper-flash}} with NPAPI based browsers like Firefox. It can be configured (e.g. for enabling HW-acceleration) by copying {{ic|/usr/share/freshplayerplugin/freshwrapper.conf.example}} to {{ic|~/.config/freshwrapper.conf}}.
 +
}}
  
==Using Mozilla==
+
==== Upgrade ====
  
===For Adobe Acrobat Reader plugin===
+
If you are using [[Firefox]], please make sure to follow [[Firefox#Firefox detects the wrong version of my plugin|this instruction first]].
pacman -S acroread
 
ln -s /opt/mozilla-plugins/nppdf.so /opt/mozilla/lib/mozilla/plugins/
 
  
===For Shockwave Flash===
+
==== Configuration ====
pacman -S flashplugin
 
ln -s /opt/mozilla-plugins/flashplayer.xpt /opt/mozilla/lib/mozilla/plugins/
 
ln -s /opt/mozilla-plugins/libflashplayer.so /opt/mozilla/lib/mozilla/plugins/
 
  
Restart Mozilla if it was running.
+
To change the preferences (privacy settings, resource usage, etc.) of Flash Player, right click on any embedded Flash content (for instance [https://helpx.adobe.com/flash-player.html adobe's flash home]) and choose ''Settings'' from the menu.
  
Note: Flash is known to have bad support for Linux.
+
You can also use the Flash settings file {{ic|/etc/adobe/mms.cfg}}. Gentoo has an extensively commented [http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/www-plugins/adobe-flash/files/mms.cfg example mms.cfg].
Flash Player 7 has problems regarding sound output with alot of people.
 
Flash Player 8 and higher are not (yet?) available for Linux!
 
  
There is a GNU project going on ([[Gnash]]) that should be an open source alternative for showing Flash.
+
To enable video decoding with [[hardware video acceleration]], add/uncomment the following line:
As of 17 may 2006 it is still in development, but it is already able to run alot of Flash 7 content.
+
EnableLinuxHWVideoDecode = 1
 +
It might also be required to add/uncomment the following line:
 +
OverrideGPUValidation = 1
  
==Using Mozilla Firefox==
+
==== Multiple monitor full-screen fix ====
  
===For Adobe Acrobat Reader plugin===
+
When using a multiple monitor setup, or swapping between virtual desktops, it is possible to lose focus on a fullscreen flash window. In such a case, the adobe flash-plugin will automatically exit full-screen mode. This may not be to your liking.
pacman -S acroread
 
ln -s /opt/mozilla-plugins/nppdf.so /opt/mozilla/lib/firefox/plugins/
 
  
===For Shockwave Flash===
+
Unfortunately, this behavior is hard coded into the binary. In order to change this behavior it is necessary to alter the binary.
pacman -S flashplugin
 
ln -s /opt/mozilla-plugins/flashplayer.xpt /opt/mozilla/lib/firefox/plugins/
 
ln -s /opt/mozilla-plugins/libflashplayer.so /opt/mozilla/lib/firefox/plugins/
 
  
Note: Flash is known to have bad support for Linux.
+
Fixing this issue only works for the NPAPI plugin and this issue can be fixed via 2 ways.
Flash Player 7 has problems regarding sound output with alot of people.
 
Flash Player 8 and higher are not (yet?) available for Linux!
 
  
There is a GNU project going on ([[Gnash]]) that should be an open source alternative for showing Flash.
+
* Using the {{AUR|flashplugin-focusfix}}.
As of 17 may 2006 it is still in development, but it is already able to run alot of Flash 7 content.
 
  
===For Java Plugin===
+
* [http://www.webupd8.org/2012/10/ubuntu-multi-monitor-tweaks-full-screen.html Patching manually]:
  pacman -S j2re
+
 
ln -s /opt/java/jre/plugin/i386/ns7-gcc29/libjavaplugin_oji.so /opt/mozilla/lib/firefox/plugins/
+
:After the package has been installed, backup {{ic|libflashplayer.so}}:
 +
:{{bc|# cp /usr/lib/mozilla/plugins/libflashplayer.so /usr/lib/mozilla/plugins/libflashplayer.so.backup}}
 +
 
 +
:Then, you will need to alter that file using a hex editor like {{Pkg|ghex}}. You must open it with root privileges obviously.
 +
:{{bc|# ghex /usr/lib/mozilla/plugins/libflashplayer.so}}
 +
 
 +
:Using the hex editor find the string {{ic|_NET_ACTIVE_WINDOW}}. In ghex the readable string is on the right hand side of the window, and the hex is on the left, you are trying to locate the readable string. It should be easy to find using a search function.
 +
 
 +
:Upon finding {{ic|_NET_ACTIVE_WINDOW}} rewrite the line, but '''do not''' change the length of the line, for example {{ic|_NET_ACTIVE_WINDOW}} becomes {{ic|_XET_ACTIVE_WINDOW}}.
 +
 
 +
:Save the binary, and restart any processes using the plugin (as this will crash any instance of the plugin in use.)
 +
 
 +
==== Playing DRM-protected content ====
 +
 
 +
See [[Flash DRM content]].
 +
 
 +
=== Shumway ===
 +
 
 +
[http://mozilla.github.io/shumway/ Shumway] is a [https://github.com/mozilla/shumway/issues/2420 discontinued] HTML5 technology experiment that explores building a faithful and efficient renderer for the SWF file format without native code assistance. The plugin may be installed directly from [http://mozilla.github.io/shumway/ Mozilla's github.io site].
 +
 
 +
=== Gnash ===
 +
 
 +
[[Wikipedia:Gnash (software)|Gnash]] is a free (libre) alternative to Adobe Flash Player. It is available both as a standalone player for desktop computers and embedded devices, as well as a browser plugin, and supports the SWF format up to version 7 (with versions 8 and 9 under development) and about 80% of ActionScript 2.0.
 +
 
 +
There is a packages available: {{AUR|gnash-git}}.
 +
 
 +
=== Lightspark ===
 +
 
 +
[http://lightspark.github.com/ Lightspark] is another attempt to provide a free alternative to Adobe Flash aimed at supporting newer Flash formats. Lightspark has the ability to fall back on Gnash for old content, which enables users to install both and enjoy wider coverage. Although it is still very much in development, it supports some [https://github.com/lightspark/lightspark/wiki/Site-Support popular sites].
 +
 
 +
Lightspark can be [[install]]ed with the {{AUR|lightspark-git}} package.
 +
 
 +
== PDF viewer ==
 +
 
 +
=== PDF.js ===
 +
 
 +
[https://github.com/mozilla/pdf.js PDF.js] is a PDF renderer created by Mozilla and built using HTML5 technologies.
 +
 
 +
It is included in [[Firefox]].
 +
 
 +
For [[Chromium]] and Google Chrome it is available as extension in the [https://chrome.google.com/webstore/detail/pdf-viewer/oemmndcbldboiebfnladdacbdfmadadm Chrome Web Store].
 +
 
 +
=== External PDF viewers ===
 +
 
 +
To use an external PDF viewer you need [[#MozPlugger]].
 +
 
 +
If you want to use MozPlugger with Evince, for example, you have to find the lines containing {{ic|pdf}} in the {{ic|/etc/mozpluggerrc}} file and modify the corresponding line after {{ic|GV()}} as below:
 +
  repeat noisy swallow(evince) fill: evince "$file"
 +
(replace {{ic|evince}} with something else if it is not your viewer of choice).
 +
 
 +
When using Firefox, you may need to change 2 values in {{ic|about:config}}:
 +
* Change {{ic|pdfjs.disabled}}'s value to ''true'';
 +
* Change {{ic|plugin.disable_full_page_plugin_for_types}}'s value to an empty value.
 +
 
 +
Restart and it should work like a charm!
 +
 
 +
== UnionPay Online Pay ==
 +
{{Note|This plugin is NPAPI only. It should work in the {{AUR|palemoon}} browser.}}
 +
[[Install]] {{AUR|upeditor}} package for the "security plugin" used by UnionPay Online Pay (银联在线支付).
 +
 
 +
== Citrix ==
 +
 
 +
See [[Citrix]].
 +
 
 +
== Java (IcedTea) ==
 +
 
 +
{{Note|Both Java plugins are NPAPI-only and thus do not work in Chromium, Opera and Firefox. They work in {{AUR|firefox-esr52}}, which is supported until August 2018.}}
 +
 
 +
To enable [[Java]] support in your browser, you have two options: the open-source [[Wikipedia:OpenJDK|OpenJDK]] (recommended) or Oracle's proprietary version. For details about why OpenJDK is recommended see [https://mailman.archlinux.org/pipermail/arch-general/2011-August/021671.html].
 +
 
 +
To use OpenJDK, you have to install the [http://icedtea.classpath.org/wiki/Main_Page IcedTea] browser plugin, {{Pkg|icedtea-web}}.
 +
 
 +
If you want to use Oracle's JRE, install the {{AUR|jre}} package.
 +
 
 +
{{Note|If you experience any problems with the Java plugin (e.g. it is not recognized by the browser), you can try [[#Firefox: plugins are installed but not working]].}}
 +
 
 +
== Pipelight ==
 +
 
 +
See [[Pipelight]].
 +
 
 +
== Multimedia playback ==
 +
 
 +
Many browsers support the [[GStreamer]] framework to play multimedia inside HTML5 {{ic|<audio>}} and {{ic|<video>}} elements. Check the optional dependencies of the browser package (or of the web engine, e.g. {{Pkg|webkit2gtk}} or {{Pkg|qt5-webkit}}) to see if GStreamer is supported. See [[GStreamer#Installation]] for the description of each plugin.
 +
 
 +
For media formats that are not natively supported by your browser (e.g. most browsers don't play {{ic|.mkv}} files), the following plugins are available:
 +
 
 +
* {{App|Rosa Media Player Plugin|Qt-based browser plugin also based on MPlayer.|https://abf.rosalinux.ru/uxteam/ROSA_Media_Player|{{AUR|rosa-media-player-plugin}}}}
 +
* {{App|VLC Plugin|NPAPI-based plugin that uses VLC technologies.|https://code.videolan.org/videolan/npapi-vlc|{{AUR|npapi-vlc}}}}
 +
 
 +
== Google Hangouts ==
 +
{{Note|This plugin is not required when using Chromium or Firefox}}
 +
 
 +
Hangouts plugin can be installed with the {{AUR|google-talkplugin}} package.
 +
Hangouts is a messenger by Google, that allows you to make video call between 15 people simultaneously, or share your screen with others.
 +
 
 +
== MozPlugger ==
 +
 
 +
MozPlugger can be installed with the {{AUR|mozplugger}} package.
 +
 
 +
[http://mozplugger.mozdev.org/ MozPlugger] is a Mozilla plugin which can show many types of multimedia inside your browser. To accomplish this, it uses external programs such as MPlayer, xine, Evince, OpenOffice, TiMidity, etc. To modify or add applications to be used by MozPlugger just modify the {{ic|/etc/mozpluggerrc}} file.
 +
 
 +
For example, MozPlugger uses OpenOffice by default to open {{ic|doc}} files. To change it to use LibreOffice instead, look for the OpenOffice section:
 +
{{hc|/etc/mozpluggerrc|
 +
...
 +
### OpenOffice
 +
define([OO],[swallow(VCLSalFrame) fill: ooffice2.0 -nologo -norestore -view $1 "$file"
 +
    swallow(VCLSalFrame) fill: ooffice -nologo -norestore -view $1 "$file"
 +
    swallow(VCLSalFrame) fill: soffice -nologo $1 "$file"])
 +
...
 +
}}
 +
and add LibreOffice at the beginning of the list:
 +
{{hc|/etc/mozpluggerrc|
 +
...
 +
### LibreOffice/OpenOffice
 +
define([OO],[swallow(VCLSalFrame) fill: libreoffice --nologo --norestore --view $1 "$file"
 +
    swallow(VCLSalFrame) fill: ooffice2.0 -nologo -norestore -view $1 "$file"
 +
    swallow(VCLSalFrame) fill: ooffice -nologo -norestore -view $1 "$file"
 +
    swallow(VCLSalFrame) fill: soffice -nologo $1 "$file"])
 +
...
 +
}}
 +
{{Note|Be sure to also choose LibreOffice as your preferred application to open {{ic|doc}} files.}}
 +
 
 +
As another simple example, if you want to open {{ic|cpp}} files with your favorite text editor (we will use Kate) to get syntax highlighting, just add a new section to your {{ic|mozpluggerrc}} file:
 +
{{hc|/etc/mozpluggerrc|
 +
text/x-c++:cpp:C++ Source File
 +
text/x-c++:hpp:C++ Header File
 +
    repeat noisy swallow(kate) fill: kate -b "$file"
 +
}}
 +
 
 +
To change the default of MPlayer so that [[mpv]] is used instead, change the appropriate lines such that:
 +
{{hc|1=/etc/mozpluggerrc|2=
 +
...
 +
### MPlayer
 +
 
 +
#define(MP_CMD,[mplayer -really-quiet -nojoystick -nofs -zoom -vo xv,x11 -ao esd,alsa,oss,arts,null -osdlevel 0 $1 </dev/null])
 +
define(MP_CMD,[mpv -really-quiet $1 </dev/null])
 +
 
 +
#define(MP_EMBED,[embed noisy ignore_errors: MP_CMD(-xy $width -wid $window $1)])
 +
define(MP_EMBED,[embed noisy ignore_errors: MP_CMD(--autofit=$width -wid $window $1)])
 +
 
 +
#define(MP_NOEMBED,[noembed noisy ignore_errors maxaspect swallow(MPlayer): MP_CMD($1)])
 +
define(MP_NOEMBED,[noembed noisy ignore_errors maxaspect swallow(mpv): MP_CMD($1)])
 +
 
 +
...
 +
 
 +
#define(MP_AUDIO,[mplayer -quiet -nojoystick $1 </dev/null])
 +
define(MP_AUDIO,[mpv -really-quiet $1 </dev/null])
 +
 
 +
#define(MP_AUDIO_STREAM,[controls stream noisy ignore_errors: mplayer -quiet -nojoystick $1 "$file" </dev/null])
 +
define(MP_AUDIO_STREAM,[controls stream noisy ignore_errors: mpv -really-quiet $1 "$file" </dev/null])
 +
...
 +
}}
 +
 
 +
For a more complete list of MozPlugger options see {{man|7|mozplugger|url=https://www.freebsd.org/cgi/man.cgi?query=mozplugger}}.
 +
 
 +
== Troubleshooting ==
 +
 
 +
=== Flash Player: no sound ===
 +
 
 +
Flash Player outputs its sound only through the default [[ALSA]] device, which is number '''0'''. If you have multiple sound devices (a very common example is having a sound card and HDMI output in the video card), then your preferred device may have a different number.
 +
 
 +
For a list of available devices with their respective numbers, run:
 +
{{hc|$ aplay -l|
 +
**** List of PLAYBACK Hardware Devices ****
 +
card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
 +
  Subdevices: 1/1
 +
  Subdevice #0: subdevice #0
 +
card 1: DX [Xonar DX], device 0: Multichannel [Multichannel]
 +
  Subdevices: 0/1
 +
  Subdevice #0: subdevice #0
 +
card 1: DX [Xonar DX], device 1: Digital [Digital]
 +
  Subdevices: 1/1
 +
  Subdevice #0: subdevice #0
 +
}}
 +
In this case, the HDMI output is {{ic|card 0}} and the sound card is {{ic|card 1}}. To make your sound card the default for ALSA, create the file {{ic|.asoundrc}} in your home directory, with the following content:
 +
{{hc|~/.asoundrc|
 +
pcm.!default {
 +
    type hw
 +
    card 1
 +
}
 
   
 
   
  (for me it's: ln -s /opt/java/jre/plugin/i386/ns7/libjavaplugin_oji.so /opt/mozilla/lib/firefox/plugins/, note the missing gcc29)
+
ctl.!default {
 +
    type hw
 +
    card 1
 +
}
 +
}}
 +
 
 +
=== Flash Player: blocking sound for other applications or delayed playback ===
 +
 
 +
If sound is delayed within Flash videos or Flash stops sound from any other application, then make sure you do not have {{ic|snd_pcm_oss}} module loaded:
 +
  $ lsmod | grep snd_pcm_oss
 +
You can unload it:
 +
# rmmod snd_pcm_oss
 +
and restart the browser to see if it helps.
 +
 
 +
=== Flash Player: performance ===
 +
 
 +
Adobe's Flash plugin has some serious performance issues, especially when CPU frequency scaling is used. There seems to be a policy not to use the whole CPU workload, so the frequency scaling governor does not clock the CPU any higher. To work around this issue, see [[CPU frequency scaling#Switching threshold]]
 +
 
 +
=== Flash Player: black bars in full screen playback on multi-headed setups ===
 +
 
 +
The Flash plugin has a known bug where the full screen mode does not really work when you have a multi-monitor setup. Apparently, it incorrectly determines the full screen resolution, so the full screen Flash Player fills the correct monitor but gets scaled as if the monitor had the resolution of the total display area.
 +
 
 +
To fix this, you can use the "hack" described [http://al.robotfuzz.com/content/workaround-fullscreen-flash-linux-multiheaded-desktops here]. Simply download the source from the link given on the page, and follow the instructions in the README.
 +
 
 +
{{Note|While the author mentions using NVDIA's TwinView, the hack should work for any multi-monitor setup.}}
 +
 
 +
=== Firefox: old Flash Player version shown after upgrade ===
 +
 
 +
Solution for Firefox: delete file "pluginreg.dat" in user's profile directory.
 +
 
 +
* Close firefox
 +
* Go to {{ic|/home/''<username>''/.mozilla/firefox/''<profile_folder>''/}}
 +
* Delete file "pluginreg.dat"
 +
 
 +
Firefox will automatically rebuild this file once it is started again. Make sure to substitute ''<username>'' and ''<profile_folder>'' with the appropriate information.
 +
 
 +
=== Firefox: plugins are installed but not working ===
  
Use the Tab key to navigate easier through the directories.
+
A common problem is that the plugin path is unset. This typically occurs on a new install, when the user has not re-logged in before running Firefox after the installation. Test if the path is unset:
 +
$ printenv MOZ_PLUGIN_PATH
 +
If unset, then either re-login, or source {{ic|/etc/profile.d/mozilla-common.sh}} and start Firefox from the same shell:
 +
$ source /etc/profile.d/mozilla-common.sh && firefox

Latest revision as of 09:50, 9 May 2018

There are two types of browser plugins, based on the plugin API they use:

Most plugins on this page are NPAPI-only, unless noted otherwise.

Flash Player

Adobe Flash Player

Installation

The package you will need to install depends on the browser you use.

Note:
  • Some Flash apps may require the ttf-ms-fontsAUR package in order to properly render text.
  • The freshplayerpluginAUR package provides an experimental adapter to use pepper-flash with NPAPI based browsers like Firefox. It can be configured (e.g. for enabling HW-acceleration) by copying /usr/share/freshplayerplugin/freshwrapper.conf.example to ~/.config/freshwrapper.conf.

Upgrade

If you are using Firefox, please make sure to follow this instruction first.

Configuration

To change the preferences (privacy settings, resource usage, etc.) of Flash Player, right click on any embedded Flash content (for instance adobe's flash home) and choose Settings from the menu.

You can also use the Flash settings file /etc/adobe/mms.cfg. Gentoo has an extensively commented example mms.cfg.

To enable video decoding with hardware video acceleration, add/uncomment the following line:

EnableLinuxHWVideoDecode = 1

It might also be required to add/uncomment the following line:

OverrideGPUValidation = 1

Multiple monitor full-screen fix

When using a multiple monitor setup, or swapping between virtual desktops, it is possible to lose focus on a fullscreen flash window. In such a case, the adobe flash-plugin will automatically exit full-screen mode. This may not be to your liking.

Unfortunately, this behavior is hard coded into the binary. In order to change this behavior it is necessary to alter the binary.

Fixing this issue only works for the NPAPI plugin and this issue can be fixed via 2 ways.

After the package has been installed, backup libflashplayer.so:
# cp /usr/lib/mozilla/plugins/libflashplayer.so /usr/lib/mozilla/plugins/libflashplayer.so.backup
Then, you will need to alter that file using a hex editor like ghex. You must open it with root privileges obviously.
# ghex /usr/lib/mozilla/plugins/libflashplayer.so
Using the hex editor find the string _NET_ACTIVE_WINDOW. In ghex the readable string is on the right hand side of the window, and the hex is on the left, you are trying to locate the readable string. It should be easy to find using a search function.
Upon finding _NET_ACTIVE_WINDOW rewrite the line, but do not change the length of the line, for example _NET_ACTIVE_WINDOW becomes _XET_ACTIVE_WINDOW.
Save the binary, and restart any processes using the plugin (as this will crash any instance of the plugin in use.)

Playing DRM-protected content

See Flash DRM content.

Shumway

Shumway is a discontinued HTML5 technology experiment that explores building a faithful and efficient renderer for the SWF file format without native code assistance. The plugin may be installed directly from Mozilla's github.io site.

Gnash

Gnash is a free (libre) alternative to Adobe Flash Player. It is available both as a standalone player for desktop computers and embedded devices, as well as a browser plugin, and supports the SWF format up to version 7 (with versions 8 and 9 under development) and about 80% of ActionScript 2.0.

There is a packages available: gnash-gitAUR.

Lightspark

Lightspark is another attempt to provide a free alternative to Adobe Flash aimed at supporting newer Flash formats. Lightspark has the ability to fall back on Gnash for old content, which enables users to install both and enjoy wider coverage. Although it is still very much in development, it supports some popular sites.

Lightspark can be installed with the lightspark-gitAUR package.

PDF viewer

PDF.js

PDF.js is a PDF renderer created by Mozilla and built using HTML5 technologies.

It is included in Firefox.

For Chromium and Google Chrome it is available as extension in the Chrome Web Store.

External PDF viewers

To use an external PDF viewer you need #MozPlugger.

If you want to use MozPlugger with Evince, for example, you have to find the lines containing pdf in the /etc/mozpluggerrc file and modify the corresponding line after GV() as below:

repeat noisy swallow(evince) fill: evince "$file"

(replace evince with something else if it is not your viewer of choice).

When using Firefox, you may need to change 2 values in about:config:

  • Change pdfjs.disabled's value to true;
  • Change plugin.disable_full_page_plugin_for_types's value to an empty value.

Restart and it should work like a charm!

UnionPay Online Pay

Note: This plugin is NPAPI only. It should work in the palemoonAUR browser.

Install upeditorAUR package for the "security plugin" used by UnionPay Online Pay (银联在线支付).

Citrix

See Citrix.

Java (IcedTea)

Note: Both Java plugins are NPAPI-only and thus do not work in Chromium, Opera and Firefox. They work in firefox-esr52AUR, which is supported until August 2018.

To enable Java support in your browser, you have two options: the open-source OpenJDK (recommended) or Oracle's proprietary version. For details about why OpenJDK is recommended see [1].

To use OpenJDK, you have to install the IcedTea browser plugin, icedtea-web.

If you want to use Oracle's JRE, install the jreAUR package.

Note: If you experience any problems with the Java plugin (e.g. it is not recognized by the browser), you can try #Firefox: plugins are installed but not working.

Pipelight

See Pipelight.

Multimedia playback

Many browsers support the GStreamer framework to play multimedia inside HTML5 <audio> and <video> elements. Check the optional dependencies of the browser package (or of the web engine, e.g. webkit2gtk or qt5-webkit) to see if GStreamer is supported. See GStreamer#Installation for the description of each plugin.

For media formats that are not natively supported by your browser (e.g. most browsers don't play .mkv files), the following plugins are available:

  • Rosa Media Player Plugin — Qt-based browser plugin also based on MPlayer.
https://abf.rosalinux.ru/uxteam/ROSA_Media_Player || rosa-media-player-pluginAUR
  • VLC Plugin — NPAPI-based plugin that uses VLC technologies.
https://code.videolan.org/videolan/npapi-vlc || npapi-vlcAUR

Google Hangouts

Note: This plugin is not required when using Chromium or Firefox

Hangouts plugin can be installed with the google-talkpluginAUR package. Hangouts is a messenger by Google, that allows you to make video call between 15 people simultaneously, or share your screen with others.

MozPlugger

MozPlugger can be installed with the mozpluggerAUR package.

MozPlugger is a Mozilla plugin which can show many types of multimedia inside your browser. To accomplish this, it uses external programs such as MPlayer, xine, Evince, OpenOffice, TiMidity, etc. To modify or add applications to be used by MozPlugger just modify the /etc/mozpluggerrc file.

For example, MozPlugger uses OpenOffice by default to open doc files. To change it to use LibreOffice instead, look for the OpenOffice section:

/etc/mozpluggerrc
...
### OpenOffice
define([OO],[swallow(VCLSalFrame) fill: ooffice2.0 -nologo -norestore -view $1 "$file"
    swallow(VCLSalFrame) fill: ooffice -nologo -norestore -view $1 "$file"
    swallow(VCLSalFrame) fill: soffice -nologo $1 "$file"])
...

and add LibreOffice at the beginning of the list:

/etc/mozpluggerrc
...
### LibreOffice/OpenOffice
define([OO],[swallow(VCLSalFrame) fill: libreoffice --nologo --norestore --view $1 "$file"
    swallow(VCLSalFrame) fill: ooffice2.0 -nologo -norestore -view $1 "$file"
    swallow(VCLSalFrame) fill: ooffice -nologo -norestore -view $1 "$file"
    swallow(VCLSalFrame) fill: soffice -nologo $1 "$file"])
...
Note: Be sure to also choose LibreOffice as your preferred application to open doc files.

As another simple example, if you want to open cpp files with your favorite text editor (we will use Kate) to get syntax highlighting, just add a new section to your mozpluggerrc file:

/etc/mozpluggerrc
text/x-c++:cpp:C++ Source File
text/x-c++:hpp:C++ Header File
    repeat noisy swallow(kate) fill: kate -b "$file"

To change the default of MPlayer so that mpv is used instead, change the appropriate lines such that:

/etc/mozpluggerrc
...
### MPlayer

#define(MP_CMD,[mplayer -really-quiet -nojoystick -nofs -zoom -vo xv,x11 -ao esd,alsa,oss,arts,null -osdlevel 0 $1 </dev/null])
define(MP_CMD,[mpv -really-quiet $1 </dev/null])

#define(MP_EMBED,[embed noisy ignore_errors: MP_CMD(-xy $width -wid $window $1)])
define(MP_EMBED,[embed noisy ignore_errors: MP_CMD(--autofit=$width -wid $window $1)])

#define(MP_NOEMBED,[noembed noisy ignore_errors maxaspect swallow(MPlayer): MP_CMD($1)])
define(MP_NOEMBED,[noembed noisy ignore_errors maxaspect swallow(mpv): MP_CMD($1)])

...

#define(MP_AUDIO,[mplayer -quiet -nojoystick $1 </dev/null])
define(MP_AUDIO,[mpv -really-quiet $1 </dev/null])

#define(MP_AUDIO_STREAM,[controls stream noisy ignore_errors: mplayer -quiet -nojoystick $1 "$file" </dev/null])
define(MP_AUDIO_STREAM,[controls stream noisy ignore_errors: mpv -really-quiet $1 "$file" </dev/null])
...

For a more complete list of MozPlugger options see mozplugger(7).

Troubleshooting

Flash Player: no sound

Flash Player outputs its sound only through the default ALSA device, which is number 0. If you have multiple sound devices (a very common example is having a sound card and HDMI output in the video card), then your preferred device may have a different number.

For a list of available devices with their respective numbers, run:

$ aplay -l
 **** List of PLAYBACK Hardware Devices ****
 card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
 card 1: DX [Xonar DX], device 0: Multichannel [Multichannel]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
 card 1: DX [Xonar DX], device 1: Digital [Digital]
   Subdevices: 1/1
   Subdevice #0: subdevice #0

In this case, the HDMI output is card 0 and the sound card is card 1. To make your sound card the default for ALSA, create the file .asoundrc in your home directory, with the following content:

~/.asoundrc
pcm.!default {
    type hw
    card 1
}
 
ctl.!default {
    type hw
    card 1
}

Flash Player: blocking sound for other applications or delayed playback

If sound is delayed within Flash videos or Flash stops sound from any other application, then make sure you do not have snd_pcm_oss module loaded:

$ lsmod | grep snd_pcm_oss

You can unload it:

# rmmod snd_pcm_oss

and restart the browser to see if it helps.

Flash Player: performance

Adobe's Flash plugin has some serious performance issues, especially when CPU frequency scaling is used. There seems to be a policy not to use the whole CPU workload, so the frequency scaling governor does not clock the CPU any higher. To work around this issue, see CPU frequency scaling#Switching threshold

Flash Player: black bars in full screen playback on multi-headed setups

The Flash plugin has a known bug where the full screen mode does not really work when you have a multi-monitor setup. Apparently, it incorrectly determines the full screen resolution, so the full screen Flash Player fills the correct monitor but gets scaled as if the monitor had the resolution of the total display area.

To fix this, you can use the "hack" described here. Simply download the source from the link given on the page, and follow the instructions in the README.

Note: While the author mentions using NVDIA's TwinView, the hack should work for any multi-monitor setup.

Firefox: old Flash Player version shown after upgrade

Solution for Firefox: delete file "pluginreg.dat" in user's profile directory.

  • Close firefox
  • Go to /home/<username>/.mozilla/firefox/<profile_folder>/
  • Delete file "pluginreg.dat"

Firefox will automatically rebuild this file once it is started again. Make sure to substitute <username> and <profile_folder> with the appropriate information.

Firefox: plugins are installed but not working

A common problem is that the plugin path is unset. This typically occurs on a new install, when the user has not re-logged in before running Firefox after the installation. Test if the path is unset:

$ printenv MOZ_PLUGIN_PATH

If unset, then either re-login, or source /etc/profile.d/mozilla-common.sh and start Firefox from the same shell:

$ source /etc/profile.d/mozilla-common.sh && firefox