Netflix & Amazon Prime Video in Ubuntu 14.04

Pipelight uses a patched version of WINE to install the Microsoft Silverlight plugin used by Netflix and Amazon Prime Video. Pipelight automatically installs, configures and updates all the necessary components and dependencies for video playback. Once installed Silverlight will behave just like any other normal browser plugin. In order to watch Netflix and and Amazon Prime Video after installing Pipelight, you will need to set Firefox to spoof a compatible User-Agent String. Once configured playback works seamlessly.

Add the Pipelight's Ubuntu Personal Package Archives (PPA)

sudo apt-add-repository ppa:pipelight/stable

Update your system

sudo apt-get update

Install Pipelight and the necessary dependencies

sudo apt-get install --install-recommends pipelight-multi

Update the Pipelight plugin

sudo pipelight-plugin --update

Enable Pipelight for every user on your system

sudo pipelight-plugin --enable silverlight

Install the Firefox add-on UAControl. There are other add-ons that work but UAControl  works automatically. If you can not get UAControl working for you, you can try another method.

To access UAcontrols preferences either navigate to Tools>Add-ons or use the key combination Cltrl+Shift+A

Click Add Site and enter the website you want to send a specific user-agent string

www.netflix.com
www.amazon.com

And use one of the following user-agent strings:

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120427 Firefox/15.0a
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0
Mozilla/5.0 (Windows NT 6.1; rv:23.0) Gecko/20131011 Firefox/23.0

On my Dell XPS 13 the first string works for playback, on my desktop the second string works. Don't be discouraged. Try each string after restarting your browser until you find one that works.

Source