With Google Hangouts On Air you can broadcast live discussions and performances to the world through your Google+ Home page and YouTube channel. However, you can also use Hangouts on Air as method of capturing video of interviews or other conversations by broadcasting the video to a private YouTube channel instead of a public one. Then you can use YouTube's built-in video editing tools or download the video from YouTube and edit the video in iMovie or with other tools.
To host a Hangout On Air from your Google+ page, you need to connect your Google+ page with a YouTube channel.
There are a series of Google+ help pages on using Google Hangouts on Air: start here.
The first step is to log into your Google+ account. The menu in the top-left of your toolbar will show that you're at your G+ Home. Click on the icon and from the pull-down menu select Hangouts.
On the hangouts page, you need to select Start a Hangout on Air in order to record the hangout.
A dialog box will open where you should fill in the details of your hangout. Give it a title and fill in a description. If you are going to launch the hangout immediately, leave “Now” selected. You can also schedule the hangout for a time in the future. The default setting for a Hangout on Air is for your broadcast to be completely public, but for our purposes, you probably want the broadcast to be private so just delete the public circle from the audience. It seems like you must invite at least someone to view the broadcast, so just invite the person or persons you're hanging out with. Once all of that is filled in, click on the green Share button.
Once you've shared the invitation, you'll go to the Google+ page for your event. The title is displayed along the top. In the sidebar, you'll see the details for the hangout, including the date and time that it's scheduled for and in the box underneath is a list of those who have responded to the Google invitation and said they will view the hangout. When you're ready to launch the hangout, click on the Start button.
As the hangout window launches, your video camera will begin but it'll be grayed out in the background while a dialog box opens up in the foreground for you to invite your guests to take part in the hangout. (When you filled out the audience invitation, you were inviting them to watch the recorded video; here, you're inviting them to join you in the conversation.)
Once you've finished inviting participants, the Hangout window will launch and it will begin to call your participants. They can join and you can begin talking but the hangout won't begin recording until you click the Start broadcast button along the bottom of the window.
Once you start broadcasting, a dialog box will pop up confirming that you want to broadcast and letting you know that you can record for 8 hours. Click OK to confirm and start.
Proceed with your hangout until you're done. When you are finsihed, click the button at the bottom of your screen to Stop broadcast. It will take a moment or two to process your video, and then you can play back the video of your hangout in your Google+ profile or switch over to your YouTube account and play it there. If you click on the YouTube icon at the bottom of the video during playback, it'll open it on the YouTube page.
On the page for the video in YouTube, you can click on Video Manager to get to a page where you can add edit the video to some extent–add annotations or captions, enhance the video, and so on.
Anytime you plan to publish an interview with other people, it's essential to get participants' informed consent beforehand—which includes stating the aims and methods of your study, what you're asking participants to do, and how you'll respect confidentiality in archiving and sharing the data. In particular, be sure to clarify whether participants can remain anonymous if they choose, and how you'll ensure that anonymity in your publications.
Usually the best way to get informed consent is to use a written consent form which potential participants can read and sign. Not only does this help ensure you have communicated all the necessary details, but it then gives you a written record of what you and your participants have agreed to, particularly regarding levels of exposure or anonymity. This sample consent form illustrates helpful elements to include: information about who you are, what your project is, options for how the participant may be involved in the study, and exactly what the participant is consenting to.