Compression
Lossy: Lossy is a type of file compression which results in less quality and data from it's original version. Normally lossy compression is used in image files such as JPGS but it also used in audio files such as MP3S.
Lossless: Lossless is a type of file compression which ends up with no loss of quality, lossless compression rewrites the data of a file but in a more efficient way however as no quality is lost the file is typically bigger.
Video
MPG: These files are compressed movie files which contain both audio and video even though they are compressed they retain most of it's quality, this is why many videos on the internet such as movie trailers and music videos use the MPG format.
MP4: Is a type of file that allows a combination of video, audio subtitles and still images. It can be utilised in many different ways, short films both professional and amateur. Streaming is also viable with the use of the mp4 format because of it's lower quality.
MOV: Is a multimedia format developed by Apple that is both compatible with both Macintosh and Windows machines.
AVI: Is a format for microsoft that holds both audio and video, the quality for AVI is close to RAW but takes up less disc space
WMV: WMV is a video compression format that wad developed by Microsoft to be used with a number of different codecs. It was originally designed for internet streaming applications as a competitor to RealVideo.WMV9 has gained adoption for physical delivery formats such as HD DVD and Blu Ray.
FLV: Is a file type for Flash container which is a container file format which is used to deliver videos of the internet using Adobe Flash player. flash video is viewable on most operating systems however Apples IOS devices do not support flash player and require other delivery methods.
SWF: Is a type of flash file format that is predominantly used in animation and browser based games.
3GP: Is a file format that is used with 3G mobile phones, however it is also a format on some 2G and 4G phones.
ASF: is a file format designed for storing and playing video streams and transmitting the over the internet. this format supports scalable media such as video and audio.
Games: Games both triple A and independent can now be bought from many different online distributors such as Steam and origin. http://store.steampowered.com/app/221100/ the link shows a trailer for the the game DayZ which is available to watch online and in mobile format.
DVD: DVD's are a popular way to buy and watch films at home. the vast majority of DVD's use the VOB format and are viewed at 720p-480p
Aspect Ratio:
4:3 - was the common ratio used for TV, computer monitors and is still used by Apples iPad. aspect ratio is the term used for the hight and width of a screen in this case the screen would be 4 in hight and 3 in width making the screen a square shape.
16:9 - is now used more commonly throughout household TVs as this ratio provides a more widescreen view.
Resolution - is judged by pixels in an image, depending on how many pixels there are in an image you can have a blurry image or a crisp image by increasing or decreasing the amount of pixels in the image.
Data Rate - is the rate at which information is being transferred. it is expressed in the amount of information per unit of time e.g. a common form of data rate describing the speed of a hard drive is Megabytes/second. once you calculate the data rate at which your hard drive is transferring information you can the begin to work out how much space you will need for that file.
Frame Rate - the number of pictures taken per second by the camera determines the frame rate of the motion picture. Frame Rate describes both the speed of recording and the seed of playback eg. The more frames recorded per second, the more accurately motion is documented onto the recording medium.
Keyframe Rate - Keyframes are the markers in video production for animation which defines the start and finish point of the animation. in-between the start and finish of this you have all of the other keyframes which are virtual frames and are not recorded like a camera would do, so the computer makes them up from copying the frame rate at which your working at.
DIVX: Is a company that helps consumers convert any type of file.
ASF: is a file format designed for storing and playing video streams and transmitting the over the internet. this format supports scalable media such as video and audio.
Games: Games both triple A and independent can now be bought from many different online distributors such as Steam and origin. http://store.steampowered.com/app/221100/ the link shows a trailer for the the game DayZ which is available to watch online and in mobile format.
DVD: DVD's are a popular way to buy and watch films at home. the vast majority of DVD's use the VOB format and are viewed at 720p-480p
Aspect Ratio:
4:3 - was the common ratio used for TV, computer monitors and is still used by Apples iPad. aspect ratio is the term used for the hight and width of a screen in this case the screen would be 4 in hight and 3 in width making the screen a square shape.
16:9 - is now used more commonly throughout household TVs as this ratio provides a more widescreen view.
Resolution - is judged by pixels in an image, depending on how many pixels there are in an image you can have a blurry image or a crisp image by increasing or decreasing the amount of pixels in the image.
Data Rate - is the rate at which information is being transferred. it is expressed in the amount of information per unit of time e.g. a common form of data rate describing the speed of a hard drive is Megabytes/second. once you calculate the data rate at which your hard drive is transferring information you can the begin to work out how much space you will need for that file.
Frame Rate - the number of pictures taken per second by the camera determines the frame rate of the motion picture. Frame Rate describes both the speed of recording and the seed of playback eg. The more frames recorded per second, the more accurately motion is documented onto the recording medium.
Keyframe Rate - Keyframes are the markers in video production for animation which defines the start and finish point of the animation. in-between the start and finish of this you have all of the other keyframes which are virtual frames and are not recorded like a camera would do, so the computer makes them up from copying the frame rate at which your working at.
DIVX: Is a company that helps consumers convert any type of file.
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