Bit Depth Bit is on or off, 1 or 0 Byte is a string of 8 bits Kilobyte is 1,024 bytes (over ’s and 0’s) Megabyte is 1024 kilobytes Gigabyte is 1024 megabytes Terabyte is 1024 gigabyte Petabyte is 1024 terabytes Exabyte… etc.

Bit Depth Each pixel is a byte (a string of 8 bits) Grayscale images use a value scale from or 256 levels from white to black.

Bit Depth Color is made of 3 monochromatic channels of 256 levels. Each channel is an 8 bit channel. Red (8bit) + Green (8bit) + Blue (8bit) = 24bit System

Bit Depth Each pixel from a grayscale is a string of 8 bits, or a byte. Each color pixel is 24 bits or 3 bytes. Bitmap: 4 pixels = 1 byte

Bit Depth 1024 bytes = 1 Kilobytes 1024 Kilobytes = 1 Megabytes 1024 Megabytes = 1 Gigabyte 1024 Gigabyte = 1 Terabyte

Bit Depth This image is 378 kilobytes or just under 400k

Bit Depth HD 16:9 Aspect RationSD 4:3 Aspect Ratio 1280 x 720 is 2.64 MB 640x480 is 1.2 MB

CODEC COMPRESSORS/DECOMPRESSORS GOAL – Reduce file size – Maintain quality Image Motion/speed Issues of Speed: Compression Decompression

Lossy vs lossless lossy compression is a data compression method which discards (loses) some of the data, in order to achieve its goal of reducing a file size.data compression lossless compression is required for text and data files, such as bank records, text articles, etc.lossless compression

CODECS Compression Schemes JPEG: Joint Photographic Experts Group, 1986 Cinepak, SuperMac Technologies for Apple Corp., 1991 Sorenson, Apple Corp. for Quicktime, 1998 MPEG: Motion Picture Experts Group, 1988 Canada DVCPro by Panasonic, 1995 for News H.264 (MPEG4), 2003

SPEED: Bit Rate Bit Rate is the number of bits or data than can be transmitted at one time. – Bit/s or Bps – Kbit/s or Kbps – Mbit/s or Mbps – Gbit/s or Gbps – Tbit/s or Tbps

Bit Rate/Data Rate 28 – 384 kbit/s –videoconferencingvideoconferencing 1.25 Mbit/s – VCD qualityVCD 3.5 Mbit/s typ - Standard-definition television MPEG-2Standard-definition television 5 Mbit/s typ – DVD quality MPEG-2DVD 8 to 15 Mbit/s typ – HDTV quality MPEG-4HDTV 29.4 Mbit/s max – HD DVDHD DVD 40 Mbit/s max – Blu-ray DiscBlu-ray Disc

Baud Rate Baud Rate/Data Rate is the number of changes (packing or unpacking of bits) or symbols per second that can transmit across a data stream, such as an Ethernet cable, modem, satellite, wifi, etc.

Bandwidth A telephone wire (modem) may transmit at a rate of 34,200 bit/s. Ethernet may transmit bits at 100 times the rate of a modem Fiber Optics may be 1000 times faster than Ethernet.

Interlacing vs Progressive When interlacing is visible. Use the de-interlace filter found in the Video Folder (in the “effects” tab, in the bin). Drag into the clip that’s interlaced.