View source for Lossless and lossy

'''Lossless''' is a way of [[compress]]ing data which is fully reversible, i.e., does not "throw away" data. A losslessly compressed file can be used to create an exact copy of the source file.

'''Lossy''' is the opposite of lossless. A certain amount of data is discarded; how much is usually dependent upon a quality or [[bit rate]] setting of the codec.  This makes the file (or stream) much smaller that lossless compression, but reduces the quality.  It is impossible to [[transcode]] from one lossy format to another without further degrading quality.

==Lossless Codecs==
{{Mmwiki|Category:Lossless Video Codecs|Category:Lossless Audio Codecs}}
* [[WAVE]] (WAVE is technically a container format, but usually contains lossless PCM audio.)
* [[FLAC]]
* [[WavPack]]
* [[HuffYUV]] video codec

==Lossy Codecs==
* [[MP3]]
* [[Vorbis]]
* [[AAC]]
* [[AC3]]
* [[WMA]]
* [[Speex]] 
* Most [[video codec]]s

[[Category:Glossary]]