Editing MiniDisc (section)

=== MDLP ===
In 2000, Sony announced MDLP (MiniDisc Long Play), which added new recording modes based on the new codec ATRAC3. In addition to the standard, high-quality mode, now called SP, MDLP adds LP2 mode, which doubles the recording time – 160 minutes on an 80-minute disc – of good-quality stereo sound, and LP4, which allows four times more recording time – 320 minutes on an 80-minute disc – of medium-quality stereo sound.

The [[bitrate]] of the standard SP mode is 292&nbsp;[[kbit/s]], and it uses separate stereo coding with discrete left and right channels. LP2 mode uses a bitrate of 132&nbsp;kbit/s and also uses separate stereo coding. The third mode, LP4, has a bitrate of 66&nbsp;kbit/s and uses [[joint stereo coding]]. The sound quality is noticeably degraded compared to the other two modes, but is sufficient for many uses.

Tracks recorded in LP2 or LP4 mode play back as silence on non-MDLP players.