The problem with standards is that if one group impements the specification slightly different than another group, interoperability is thrown out the window. For those developing or working with MPEG-4 content and software there's a new tool on the market for testing interoperability and standards compliance: Mindego's MPEG-4 Analyzer. Targeted at the MPEG technical types, the Windows-based MPEG-4 Analyzer software can test encoding systems or be used to "interrogate" incoming MPEG-4 streams. Mindego sells the tool in two versions: the MA-4500 and MA-4000, the latter shipping with a slightly smaller feature set. Pricing is set at $5,995 for the MA-4500 and $3,495 for the MA-4000.