Technical aspects of editing

 

1.       What do the numbers 16:9 refer to? The aspect ratio. 16 length/width - 9 height

2.       What is the frame size of a 1080p video file? 1920 x 1080.

3.       If you have a video file which is 720:50p what is the frame rate and what does the p stand for?  50 frames per second. 'p' - progressive

4.       What is the difference between p and i? P - progressive, I - interlaced.  The designation of how the frames are shown. Progressive shows every frame one after another whereas interlaced show half the frame at any one moment and interlaces these half frames together so we see unified movement.

5.       What frame rate is real film shot at? 24fps (23.976)

6.       What might be the advantage of shooting at a higher frame rate? more clarity to the image. works much better for slow-mo footage as there are more still images to choose scroll through slowly. example - golfers analysing there swing.

7.       What defines a lossy file? A highly compressed file that loses unnecessary information so that it ends up with a smaller file size.

8.       Name three file types commonly used in video editing. .MOV .JPEG .MP4

9.       What is the difference between a video file type and a codec? a file type is what holds all the information and a codec is how it 'codes/decodes' the information.

10.   What is bitrate?  The rate at which a file processes information.