file formats Images, Videos and Audio

Images

jpeg (Joint Photographic Expert Group)
  -> base line
  -> optimized (the image will place a blank space and show up after it has finished downloading.
  -> progressive (means that the file will load pieces by pieces)

gif (Graphic interface Format)
  -> used for moving photos and supports transparency.

PNG
  -> 16.8 m colors suports animation and transparency more big files size.

tiff
  -> flat image and only understand layered tiff files

BMP
  -> Bit map
2 types of file images lossless(high res files) and lossy (jpeg and gif)

lossless and lossy

lossless files are files that even if you save it many times. the file will never loss its quality.

lossy files are files that losses its quality every time you save it,

raster and vector

raster or bitmap is a composed of tiny rectangular shaped color boxes thats makes the whole image. unlike vector. it is composed of a single colored space that even if you stretch it larger. the file will ever lose its quality.

Videos

mp4 or MPEG-4
 -> is much more used that .MOV
avi
 -> much bigger file size and used for HD videos
3gp
 -> used for phones and has small file size
mov
 -> uses quicktime to play.
mpeg (Moving picture experts group)
 -> like Jpeg its low in quality
flv
 -> used for web.

Audio

mp3
 -> used for cell phones
wav (Waveform Audio File Format)
  -> is used by microsoft
aac (Advanced Audio Coding)
  -> is a lossy file but is more better that MP3
ogg
  ->
midi
  -> used for web,  more faster to load because its small
wma (Windows Media Audio)
  -> is used on windows