It seems that more and more people come to wonder about the many formats of audio and video. This curiosity arose for certain reasons. As you know ,3G mobiles are upgraded with each passing day , portable gadgets such as PDA are quite on the way to ubiquity, and necessarily accompanied by the enhancement of bandwidth, some ABCs about audio and video become a must. Since if you are lost about what kind of format your gadget supports, problems will dog you.
There are various ways to encode audio and video, among which the usually used ones are classified into the following several kinds:
MPEG: the mainly used formats for videos are MPEG1(also referred to as vcd),MPEG2(used by DVD),MPEG(DVDIP uses its variations as divx ,xvid,etc.)and MPEG4 AVC( very hot now);
For audio format ,MPEG Audio Layer 1/2,MPED Audio Layer3( that’s mp3),MPED-2 AAC,MPEG-4 AAC etc. Attention: MPEG is not applied for DVD audio .
H.264 series: its family includes H262