Are CD's and CD R's the same thing?

A variant of the standard Video CD encoding known as KVCD is also supported by most (but not all) standalone DVD players. Not actually a standard as such, KVCD is really nothing more than a template for the ubiqitous TMPGenc MPEG 1/2 encoder. As well as VBR encoding, KVCD also uses a reduced audio bitrate and a 'magic' quantization matrix to allow more than two hours of surprisingly good quality video on one CD. Players known to have trouble with these are mainly confined to older ones which are often fussy about standards compliance. The same scenario applies to the SKVCD (or KSVCD) which does much the same thing as KVCD, but uses MPEG2 and adds some luxuries such as multiple audio streams and chapters. Most current standalone players now support (K)SVCD, as the format has been endorsed by Philips, the custodian of all the CD standards.