Media

I was listening to my favorite songs on my mobile the other day, when I gave a thought to how this was possible...
MP3 players use solid-state memory. An MP3 player is no more than a data-storage device with an embedded software application that allows users to transfer MP3 files to the player. MP3 players also include utilities for copying music from the radio, CDs, radio or Web sites and the ability to organize and create custom lists of songs in the order you want to hear them. This list of songs is called a playlist. In addition to storing music, the MP3 player must play music and allow the user to hear the songs played. To do this, the player:

•  Pulls the song from its memory. 
•  Decompresses the MP3 encoding, through DPS, via an algorithm or formula.
•  Runs the decompressed bytes through a digital-to-analog converter into sound waves. 
• Amplifies the analog signal, allowing the song to be heard.

For both video and audio files, making the files even smaller requires codec, or compression/decompression software. Codecs discard unnecessary data, lower the overall resolution and take other steps to make the file smaller. Different codecs also create specific types of files, which work on specific streaming players.
The total reduction in quality depends on a number of factors, including the bitrate, or the speed of the transfer from the server to a computer.
Once a file is edited, compressed and encoded, it's uploaded to a server.
A video player does this:
You record a high-quality video or audio file using film or a digital recorder. You digitize this data by importing it to your computer and, if necessary, converting it with editing software. If you're creating a streaming video, you make the image size smaller and reduce the frame rate. A codec on your computer compresses the file and encodes it to the right format. You upload the file to a server The server streams the file to users' computers
...Now you can listen to audio file on your mobile, or watch a video file on your laptop even on the move... Indeed entertainment helps in relaxing mind in this busy world... Audio Visual effects are magic of technology...