Adobe Flash

Installation
There are several options available for using Flash Player on Gentoo. Some options work with all web browsers, while others are limited to specific web browsers.

Adobe Flash
Adobe provides a Flash Player for both NPAPI-based browsers (e.g. Firefox, Konqueror) and PPAPI-based browsers (e.g. Chromium).

To use Flash Player with a NPAPI-based browser, enable the  USE flag:

To use Flash Player with a PPAPI-based browser, enable the  USE flag:

Flash Player has a proprietary license that needs to be accepted before installation:

Next, install Adobe Flash Player:

After installation, start/restart the web browser.

Google Chrome
Google Chrome bundles a PPAPI-based Flash Player. Simply install to use Flash Player:

freshplayerplugin
freshplayerplugin is a NPAPI wrapper for the PPAPI-based Flash Player. To use the PPAPI-based Flash Player with a NPAPI-based browser, install :

After installation, start/restart the web browser.

Without Flash Player
An alternative to using Flash Player when only playing video streams from YouTube, Vimeo, Twitch, Internet TV stream, etc., is to install with the   USE flag, and  or  with the   USE flag. The  USE flag allows  to work in mpv, and the   USE flag allows FFmpeg/Libav to open  streams. Next, install the Open-with Firefox add-on and configure it in the following way:


 * Open, select
 * In the dialog select a video streaming capable player (e.g. ).
 * (Optional step) Choose how to display the dialogs using the left panel of Open-with add-on.
 * Right click on links or visit pages containing videos. If the site is supported, the player will be open as expected.

The same procedure can be used to associate other video downloaders such as.

External resources

 * Adobe Flash Player on Arch Linux Wiki