Week 6: Clear

This week I learned about multimedia. I have never formally learned about this topic before so I learned about a lot of new stuff. I learned about lossy and non lossy. I have heard the term before but was not sure what it meant. Lossy is when you compress data and information is lost to save space. Non lossy is when you compress data and information very little data is lost. However the data is rearranged so that instead of BBBBB for 5 black pixels you would have 5B. This process saves space.

I also learned what a key frame is. It is the first frame in a series of video frames that contains the majority of the information. The frames after it contains less information and are based on what changed between that and the key or first frame. AVI is the main video format for non compression. WMV which was created by Microsoft has the ability to use DRM or Digital Rights Management. DRM has the ability to check which person first owned the file. DRM can also contains a watermark and even make the file expire after a set period of time.

The main professional video editing software for the PC would be Adobe Premiere and for the Mac would be Apple Final Cut. Screen casting is when you capture what is happening on the screen of a computer and turn it into a video. Some of the best software for screen casting is Camtasia and Jing. The later is a free web application. When doing a screen cast you can choose to capture the full screen, a region (which is a user choosen area of the screen) or a window.

Overall this was an interesting week. Glad the Excel project is over :) Next week here I come!