MPEG2 is an enhanced form of MPEG1
. (It even includes MPEG1 headers
in the data stream
) Major improvments include prediction modes, Intra VLC table, DC precision, and non-linear macroblock quant. These results in a higher quality video
, though at the expense of additional encoding/decoding power.
- At 1Mbps the quality is the same as a standard VHS recording
- At 3Mbps it's equivilent of professional broadcast NTSC
- At 4Mpps it's equivilent to professional broadcast PAL