Once we had the picture zoomed and moved to where we wanted it to be, we could then play back our video. Or for greater accuracy we use the slider controls on the left hand side of the screen. We would then change the size of the video by either using the mouse to select the corners of the picture and drag it out, in the same way you might use your fingers on a picture on your phone. So we would place another keyframe at the 20 second mark. Then we decide that we want to be fully zoomed in by 20 seconds.
We would then move the video to the 15 second mark and add a keyframe. So for instance, we might have a 30 second video of somebody doing tricks on a skateboard, however after 15 seconds we decide that we want to slowly zoom in so that we can see the tricks better. Then we go to our end frame and adjust the video how we want it to look.
At the starting frame we adjust the video to how we want it to look, or even just leave it alone if we are happy with it. When we edit the video using keyframes, we choose one frame at the beginning and one at the end. Therefore we say that the frame rate for a cinema film is 25 fps, which stands for twenty five frames per second. When you watch a film in the cinema, each second of film you watch consists of twenty five individual pictures. They are called keyframes because video is made up of lots of individual pictures called frames. In order to do this you need to use ‘keyframes’. When editing a video, you might sometimes want to zoom in on a particular part of the screen. Today we look at the amazing free video editing software Lightworks This video kicks off a series of 'Feynmen technique' tutorials, whereby I attempt to explain a variety of things in a way that a 5 year old child could understand.
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