2006-11-20 19:27:03 · 2 answers · asked by RAVINDU 2 in Computers & Internet ➔ Programming & Design
Ooo... complicated subject!
In general, video uses a LOT of bandwidth. For example, let's say you have a 720x480 video, 24-bit color, 30 frames per second. 24-bit color means 3 bytes per pixel, so 720x480x3x30 bytes per second is needed to transmit this video! (31104000 bytes, of 31MB per second). Obviously, that's way too much bandwidth. So most video streams nowadays are encoded so you need MUCH less bandwidth.
An encoder basically takes a uncompressed stream and encodes it into a compressed stream.
Decoder does the reverse, takes a compressed stream and unwraps it into an uncompressed stream.
Filters... lots of different definitions, but when as related to multimedia, it refers to the various "layers" that will interpret signals separately. For example, when you read an AVI file, it could contain a video stream, multiple audio streams, plus subtitle streams. So you will need a filter to just filter out and process the audio, for example. The audio itself can be encoded, and MP3 or AC3 are popular audio encoding formats.
Ripping usually refers to reading the binary content off of digital media such as CD or DVD and dumping the content onto the harddrive of a PC.
2006-11-20 19:35:38 · answer #1 · answered by Kasey C 7 · 0⤊ 0⤋
it's a software that allows ur pc for example to be able to play video (watching a dvd) also audio encoder it's another software that allows sound to come out of the speakers (listening a song).
2016-03-29 03:54:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋