Get ready to get pinched. If you come into our studio today wearing the color green, you’re going to have bigger problems than someone harkening back to middle school for a quick pinch. This is because we use green screen in our studio. Do we always use green screen? No, absolutely not. But it is extremely popular in the video world because of its flexibility, scalability and relative ease of use.
To give away a secret or two, we’ll let you know something – most modern movies utilize green screen at some point. Pretty much all advertisements utilize a heavy amount of green screen. But why green? And how does it work?
Well, for simple reasons – look at your face. Look at your body. See any green color? Well, of course you do, because today you’re probably wearing green. But normally, your skin tones, almost all eyes, hair, etc. contains colors in a lot of other realms, but green is not common. Therefore, when the computer goes through and removes green color, it’s not removing the color from your face or body. That is, if you didn’t wear green.
So how does it work?
The principle is simple, but in reality, it ends up being a little more complex. To start, the computer, with a human’s help, is able to find a color. The computer simply finds pixels that are of that exact color, or color range, and turns them invisible. At that point, you can add pictures or colors behind the non-green items.
But it becomes complicated. First – you need massive computer power. In HD resolution, the frame is 1920×1080 pixels. That’s just over 2 million pixels. However, there are also about 30 frames per second. So, imagine processing all of those pixels (2 million) 30 times a second. Yes, it takes a large computer to do this well.
Second, there are lots of nuances in video that make it hard for the computer to process in just a standard sense. Specifically, edges around the subject, movement, glasses, water bottles, and more, all cause issues that must be altered when keying a video.
Third, storage. All of that information has to be stored somewhere, and to give a good example, a three minute video at full HD resolution is about 60 gigabytes keyed out. Multiply this over thousands of videos and you’ve got a huge storage problem on your hands.
Lesson learned? Green screen is great, but leave it to the professionals. Yes, #shamelessplug.
Originally posted at http://natestrong.com.
In my life physical flexibility has never been an area of strength. I will admit 10 years ago I did hot yoga – one time. The yoga instructor walked up behind me and whispered, “Jeff, you are here to stretch.” I smiled because she was much nicer than my expletive screaming football coaches I had in the past. Before practices, my high school coaches would scream #^*##Turleygoing2die because I couldn’t touch my knees – and trust me “#” didn’t mean hash tag in the 80’s.
Needless to say, contorting my body has never been a strength for me.
Although as I have grown older I have come to appreciate the importance of flexibility especially in the areas of business and life.
Here are a few insights which might help you along the way.
- Identify Weakness: When you know what your weaknesses are you can surround yourself with those who are stronger than you. Example: I cannot edit videos; therefore I have surrounded myself with great editors.
- Embrace Weakness: If you embrace your weakness, then you can laugh a little more and be less insecure about it.
- Learn Weakness: Knowing about your weaknesses and only focusing upon your strengths puts you at a risk of losing your “cheese.” The world is changing fast and your strengths might just evaporate. The more we learn in areas of weakness the wider our worldview becomes. If I’m only a web designer in a certain narrow area what happens when technology changes? No more cheese! In relationships if you are only focusing upon your strengths, you might wake up one day to realize everyone seems to be moving away from you. If you are not attracting people then take an honest evaluation of your weaknesses.
- Lean Weakness: Obviously we don’t want to spend the majority of time in our weaknesses because it sucks our time and emotional energy. Make sure you spend a limited amount of time contorting yourself in areas which don’t come natural.
- Relational Weakness: Self-awareness of your personal weaknesses is one way to strengthen your relationships both with family and employees. Knowing my weakness is not good enough; however, stretching in those areas will make you stronger.
Over winter break we took the family to iFly Seattle. Trust me when I say I’m the world’s most inflexible human being… so flying didn’t come natural. My body wasn’t created to invert which allows you to fly higher. Here is a tip to flying: the more you stretch the higher you can fly. How have you responded to your weaknesses at work or at home?
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