TMPGEnc DC component precision

andy

which is the best bits to use quot;9bitsquot; is the default i am encoding avi -gt; mpeg 2 for my dvd-r and wana know is using quot;10bitsquot; better or that etc or that. And what does the 8,9,10 bits opsion do

A quote from here probably explains it best:

DC component precision
The DC component represents the average brightness of a block (8x8 pixel region). In MPEG-1 video this is fixed to 8 bits, but MPEG-2 allows higher precision. It is important that the DC component is accurately represented, so a setting of 10 is recommended for MPEG-2 sequences, unless you are encoding using a low bitrate.