Sharing your gameplay is easy with NVIDIA Share and Twitch broadcasting. With NVIDIA Share, you can save and record video and screenshots you can share with your friends. Share can even record several minutes of gameplay in the background so you won't miss any exciting gaming moments. NVIDIA Share also lets you live stream your gameplay to Twitch.
Launch the game you want to share.
On your SHIELD Controller, press and hold the Home 
button. Your game will pause and bring up the share menu:
Select the Instant Replay option to enable recording of the last 5 minutes of your game play.
Press the Back 
button again to return to game play. Your game is now being recorded.
Once you are ready to share your game play, press and hold the Home button to re-enter the share menu. Selecting the Auto Record option this time will open options to either Save, Save and share or Stop your recording.
You can also use the Record option if you want to record more than just the last five minutes of game play.
To take a screenshot of the action at any time, select the Screenshot option to save a screenshot to your device.
All videos and screenshots are saved by default in the "Photos and Videos" app.
Launch the game you want to broadcast.
On your controller, press and hold the Home button. Your game will pause and bring up the share menu:
Select the Broadcast option in the menu to begin streaming to Twitch. If you haven't already logged in with your Twitch account details, you will be prompted here.
On the top row of the Share menu, the Share settings 
button allows you to change a number of settings to optimize your sharing experience.
Twitch settings - Change settings that are specific to Twitch broadcasting.
Change Quality - Adjusts the video quality of recorded content.
Instant Replay last - Adjust replay duration to up to 20 minutes of gametime.
Status - Toggle the displayed info on the HUD while recording, which includes microphone ON/OFF status, record icon, video resolution, frame rate and bit rate.
Auto record last - The maximum length of the recorded game play allowed when auto-recording game play.
Mic volume - Move the slider to adjust mic volume.
Adjust layout - Customize UI that is displayed on screen when broadcasting.