Digital Video

Representing video An array of images Movie = video + audio

How big is a movie Frames (pictures) per second –32 FPS faster than human eyes –24 FPS - OK –10 FPS - a little jerky How big is a frame –This screen 1024x768 –TV x 480

How big? 640 x 480 x 10 minutes –307,200 x 600 sec x 32 fps –5.9 billion pixels x 3 (RGB) –17 billion pixels Audio x 10 min x 60 sec/min x 2 –58 million bytes Compression (reduce the size)

Video Standards NTSC - American Television –Mostly black and white with a little color added –460x360 VHS - video tapes –Cheat a lot on the color –300x360 DVD - 720x480 HDTV - High definition TV –1920x1080

Video Standards Digital video –MPEG –Quicktime –AVI PAL - European standard –More lines, better color

Basic video editing in Premiere Project –A collection of clips and cuts of audio and video Import –Bringing in clips Tools –Timeline –Select –Razor Export Timeline –Generate an edited movie

Starting Premiere Select the resolution and rate for your work

Pieces of Premiere Project where clips are collected Timeline Monitor where you watch Tools

Import Bringing clips into the project –Movie clips –Audio files (from CoolEdit or elsewhere)

Creating a movie Drag clips onto the Timeline DEMO

Editing Razor tool –Cuts clips into two pieces so that each can be used independently Select –Select and moves a clip Delete key –Removes clips from the time line

DEMO

Timeline How does the timeline relate to the video and audio array? Each point on the timeline corresponds to an index in each of the arrays –Not necessarily the same index