How hard disk recognize the data of different types?

[Hadi_02]

How audio video and image data is encoded on Hard Disk and compact disk?

 

[kenrivers]

There is no short answer to that question. The audio and video files are encoded before being stored on a hard disk or CD.

Audio compression links:
http://www.eetimes.com/design/audio-design/4015280/How-codecs-work
http://www.animemusicvideos.org/guides/avtech/audio2.html

Video compression links:
http://www.slideshare.net/choonkeat/a-gentle-introduction-to-video-encoding-diveintomark-presentation
http://www.networkcomputing.com/1304/1304ws1.html
http://en.wikipedia.org/wiki/Data_compression