DATA PORTABILITY

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JPEG joint photographic experts group(image file t

  • compressed,bitmapped image file type
  • keeps file size low by reducing repetition of pixel patterns
  • doesnt support animation or transparency
  • originally designed for photographs
  • the higher the compression the lower the file size can be achieved.
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GIF graphics interchnage format

  • compressed,bitmapped image file type
  • animate sequences of images or singular still images
  • can contain transparent pixels
  • low file sizes from restrictingthe colour depth to 256 colours.(8-bit)
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PNG portable network graphics

  • compressed, bitmapped image file type
  • designed for online sharing
  • supports transparency but not animation
  • doesnt use CMYK colour mode which is linked to ink printers.
  • emplot lossless compression techyniques
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TIFF tagged image file format

  • created for microsoft and apple systems
  • used as standard file type in commercial printing
  • holds images of other file types
  • highly complex structure
  • uses lossy and lossless compression techniques
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PICT

  • developed by apple as their native graphic file type
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TXT text

  • stored as plain text files
  • will store characters strings that can be readily viewed and edited by the user
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CSV comma separated values

  • text file type
  • data is structured in a tabular manner
  • will have a common structure in each row
  • are plain text files that can be edited, read and created by the user
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RTF rich text information

  • text file
  • used for a text based documents and supports basic formatting
  • allows moment of text files between different word processors and different operating systems
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PDF portable document format

  • text file type
  • holds text, formatting, images and potentially some editable regions
  • can be used with many applications
  • can be downloaded for free
  • created using a save, print command
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WAV windows waveform

  • sound file type
  • provides a close likeness to the original analogue sound
  • a wide range of programs are available for manipulating WAV files
  • recording sounds can be done done at a very high sample rates
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MP3 mpeg audio layer 3

  • sound file type
  • uses lossy compression techniques
  • human ear doesnt generally hear
  • music industry professionals tend not to use because of the deterioration is unacceptable
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WMA window media audio

  • sound file type
  • audio file format developed by microsoft to compete with MP3
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MIDI musical intrument digital interface

  • sound file type
  • captured via a senal interface connected to an electronic muscial intrument
  • data can be recieved and sent from the serial interface along MIDI channels
  • includes standard MIDI codes that represent the instrument used, the tempo, pitch, duration and volume of musical notes
  • format for interchange of sound data
  • effectively a series of commands intructing the computer how to play back to sound
  • is only transmission for the sound clips as MIDI is not storage for sounds.
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MPEG moving/motion picture experts group

  • video file type
  • widely used video file format
  • uses delta compression-transmitting info about pixels that change between vselecteed frames of a video.
  • to sustain video quality a whole frame is transmitted at less frequent intervals.
  • can be used on optical disks for various video resolutions and playback window sizes.
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MP4 mpeg-4 part 14

  • video file type
  • designed for digital streaming over the internet
  • stores and plays digital audio with video
  • encompasses MP3 tech in its lower layers-MP3 can be played on a MP4
  • supports subtitling and noline streaming
  • lossy compression is used to reduce large video file sizes 
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AVI audio video interleave

  • video file type
  • supports multiple video adn audio streams playing back from 1 file
  • no comprssions is added this sustains their orginal quality and eliminates the use for codecs, but leads to higher file size until compression is added
  • do not swotre ratio of width-to-height for playback
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