Due to the compression feature compared with MP4, MPEG can provide more superior video quality. Usually, MPEG is used with VCDs and DVDs. MPEG is compressed with MPEG-1 or MPEG-2. MPEG-4 compression discards more information than MPEG-1 and MPEG-2 which means MP4 is developed mainly to use on portable devices, like PSP, iPod, iPhone, Android, etc. MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images.