About MPEG-4 video
MPEG-4 is one of the most recent video/sound compression technique standardized by MPEG group, designed exceptionally for low-bandwidth (under 1.5MBit/sec bitrate) video/sound encoding purposes.
MPEG-4 is designed to convey DVD-quality video (MPEG-2) at lower data rates and record sizes.
It ought to be noticed that not at all the MPEG-1 and MPEG-2, the MPEG-4’s predecessors, MPEG-4 itself isn’t only one unified encoding mechanism, yet rather a group name for a few kinds of video and sound encoding methods that offer certain equivalent attributes. These ‘flavors’ are also known as “profiles” or “layers” in MPEG-4 compression plan and each new profile ought to be in reverse compliant to the older, lower versions of MPEG-4 in terms of playback capacity.