MTD2 class 10

esse quam videri
Revision as of 23:35, 8 November 2007 by Jeff (talk | contribs) (Frame Aspect Ratio)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Frame Rate

Persistence of Vision

Video sync

SMPTE Society of Motion Picture and Television Engineers -@ wikipedia

00:00:00:00 Hours:Minutes:Seconds:Frames 24:59:59:29

30 Frame ND (Non-Drop) - Black and white NTSC

30 Frame drop frame - Color NTSC (Never the same color twice)(US/JAPAN) actually uses a frame rate of 29.97 but drops every 00 and 01 frame on every even minute unless its a 10's minute. Since the clock is slower it really take 1 hour and 3.6 seconds to count one hour so they decided to drop some frames. It does this so that the sower clock rate will match real time.

ntsc spec from 1939 before color. why 29.97fps
2/3 pull down to transfer film to video

25 Frame - PAL/SECAM

24 - film

Frame Aspect Ratio

16x9 Full Frame is shown


4x3 squeeze The 16x9 image is squeezed into the 4x3 aspect ratio. Everything gets taller and thinner


4x3 scan Pan and Scan cut out some of the 16x9 frame to make it fit into 4x3


Fame Resolution/Size


720x480 DV 4x3 aspect ratio (DV can also do wide screen by reducing the vertical resolution to 720x360) 1015 KB per frame uncompressed


640x480 TV 4x3 aspect ratio 900 KB per frame uncompressed


604x456 tv cropping


320x240 Multimedia 4x3 aspect ratio 225 KB per frame uncompressed


160x120 Multimedia 4x3 aspect ratio 59 KB per frame uncompressed


1280x720 HDTV 16x9 aspect ratio 2.6 MB per frame uncompressed


1920x1080 HDTV 16x9 aspect ratio 5.9 MB per frame uncompressed What is Video Formatting? Digital TV: A Cringely Crash Course

480 Interlaced: 14,400 scan lines/second X 480 horizontal pixels/scan line = 6,912,000 pixels/second.

480 Progressive: 34,560 lines/second X 640 pixels/line = 22,118,400 pixels/second

720 Progressive: 43,200 lines/second X 1280 pixels/line = 55,296,000 pixels/second

1080 Interlaced: 32,400 lines/second X 1920 pixels/line = 62,208,000 pixels/second

1080 Progressive: 64,800 lines/second X 1920 pixels/line = 124,416,000 pixels/second

Codecs and Compressors,1697,1544886,00.asp

Video for CD

15 Frames a second mostly 22K 16 or 8 bit audio

Video for Web

8 Frames a second mostly 22k or lower and 8 bit

Animation in Flash

  1. Onion Skinning: animation technique where each frame is drawn bases on the previos frame
    1. Rotoscoping
  2. Motion Tweening (Key Framing)
    1. Path Animation Tweening/Path Animation Tutorial

Flash Demo

  1. Show Motion Tween
    1. Show transform tools
    2. Show registration point
  2. Show Onion Skin
  3. Show Symbols
    1. Difference between Graphic And Movie Clip


  • One key frame animation in flash and one onion skin animation saved as swf and link on web site.
  • Try to animate one of your scenes in flash and save it as an swf



Video Test 3

Post an example of a tweened animation and an onion skinned animation. Make sure to link it from you website