Okay so Prezi makes nice looking easy presentations but they are made using a web interface and are flash based. This makes sharing, downloading or viewing these presentations outside of Prezi.com a bit difficult. Using built in software on a Mac along with an opensource project called soundflower you can convert a prezi (or for that matter anything on the web) into a easy to use movie file.
Using Quicktime you can do a New Screen Recording and draw a box around the content that you want to record. This works great but has one major drawback. This is capturing sound.
For example if you click on Quicktime and then do a new screen recording:
Now in the box that pops up click on the little triangle to view your audio options.
Notice the options are only NONE and Built-In-Microphone.
So the Built-in-Microphone would work but you will get terrible sound and further you will get background static, and room noise basically everything picked up by the mic. Also recording from a speaker directly to a microphone sounds terrible.
Okay so what we need is a way to capture the audio stream perfectly and uninterrupted while capturing the screen. Insert SoundFlower (https://github.com/mattingalls/Soundflower/releases/)
SoundFlower adds a audio interface into your System Preferences that allows you to direct the speaker output directly allowing you to copy it perfectly. Here is how to use it.
First install SoundFlower.
(Just download the DMG and double click on the PKG installer inside.)
With SoundFlower installed you now can get redirect the output of your sound away from your speakers.
Okay so back to Prezi and capturing the presentation with Audio now that we have SoundFlower. We need to go to System Preferences and choose Sound.
Now you change your OUTPUT to SoundFlower 2ch.
Okay now that you have redirected your output you will no longer hear any sounds. This is okay and you can change back to Internal speakers after your done capturing the video.
Now get your Prezi presentation ready to play and go to Quicktime and do a new screen recording. This time notice when you click on the little triangle to change audio you now see SoundFlower 2CH.
With the Soundflower 2ch checked now click on Record, drag a box around your prezi presention and start it it up. When the presentation is done stop the screen recording by clicking on the little stop button on the top of your screen.
Stop button is square in the circle
Okay so when you are done with the screen recording you just need to clean up the start and the finish so that it looks nicer. To do this use QuickTime’s Trim feature. This feature is awesome and is often overlooked and unknown.
Just go to EDIT | TRIM
Now you can move the sliders on either side of the video to cut off the ackward beginning and the ackward finish (the part where you stop the screen recording) so that you are left with just a nice movie.
Click and drag on either side of the Yellow box to adjust the start and end of the video
Okay before you play your final movie you need to redirect the sound back to the speakers. Otherwise you will not hear anything because all sound is still going to SoundFlower. So go back to System Preferences | Sound and now choose for Output, Internal Speakers.
Putting Sound back to your speakers.
With your trimmed video you can save it to your desktop then upload to Youtube. Or you can use another great open source project like Handbrake to shrink the file and put on a disk, email it, or do whatever you like.
(Here is a link to another Post I made on shrinking videos https://www.gcsdstaff.org/roodhouse/?p=3598)
Wait, not that I am all done couldn’t I do this same method to capture video or content from anywhere……?