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Lecture 5: CSCI E-1 Spring 2013
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Tommy MacWilliam
March 25, 2013
Education
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Lecture 5: CSCI E-1 Spring 2013
Tommy MacWilliam
March 25, 2013
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Transcript
Computer Science E-1 Lecture 5: Multimedia
Exam I
http://www.cnn.com/2013/03/10/ tech/web/grumpy-cat-sxsw
http://www.theonion.com/video/ youtube-contest-challenges-users- to-make-a-good-vi,14288/
Multimedia
File Formats
http://download.microsoft.com/download/0/B/E/ 0BE8BDD7-E5E8-422A-ABFD-4342ED7AD886/ Word97-2007BinaryFileFormat%28doc %29Specification.pdf
Interpreting Bits
Raster Graphics
Pixels
None
Colors
Additive Color Mixing
None
Color Depth
RGB
#FF0000
#0088FF
http://www.html-color-names.com/ color-chart.php
Subtractive Color Mixing
None
None
CMYK
Bitmaps
Magic Numbers
0x42 0x4D
Metadata
None
xxd
Resolution
None
http://www.youtu.be/Vxq9yj2pVWk
Compression
Lossless Compression
None
None
Lossy Compression
Hey wat r u doin tmrw? I wntd 2 go
2 c Ben.
Hey, what are you doing tomorrow? I wanted to go
see Ben.
JPEG
None
None
Alpha
Animated GIFs
http://whatshouldwecallme.tumblr.com/
Name Extension Compression Color Alpha Bitmap .bmp No 24-bit No
GIF .gif Lossless 8-bit No JPEG .jpg, .jpeg Lossy 24-bit No PNG .png Lossless 24-bit Yes
Vector Graphics
http://en.wikipedia.org/wiki/ File:Virtual_Private_Network_over view.svg
Icon Fonts
http://fortawesome.github.com/ Font-Awesome/
Seam Carving
None
None
Energy
None
None
Sound
None
Amplitude
Wavelength
Interference
None
Analog to Digital
None
Sampling Rate
None
Bitrate
MP3
PCM
Psychoacoustics
20 Hz - 20 kHz
Frequency Masking
Fast Fourier Transform
Spectrogram
None
Frames
ID3
Audio Formats
Audio Formats • AAC • MIDI • MP3 • WAV
• WMA
Audacity
3D Graphics
Wireframe
None
Polygon Mesh
None
Subdivision
http://www.subdivision.org/demos/ demos.html
None
None
None
3D Scenes
None
None
Clipping
Culling
Video
Codecs
Video Codecs
Video Codecs • H.264 • Theora • VP8
Containers
Video Containers
Video Containers • AVI • MKV • MP4 • MOV
• Ogg • WebM
Compression
None
http://youtu.be/d1JA-nh0IfI
Streaming
Buffering
Resolution
Aspect Ratio
Adaptive Bitrate Streaming
GPUs
None
http://youtu.be/-P28LKWTzrI
http://youtu.be/mWUf-H1Qjd8
Flash
Problem Set 5
http://www.cafepress.com/make/ personalized-gifts
Computer Science E-1 Lecture 5: Multimedia