What is Mode 2 Form 2 (M2F2) on CD


Mode 2 Form 2is a data mode designed to be able to store more data per block.  Instead of only 2048 'user data' bytes these blocks can store 2324 bytes per block. 
As a result these blocks don't have a third layer error correction.

If extracted raw you end up with 2352 bytes per block.  If extracted as 'user data' you end up with 2324 bytes per block.

This mode is THE mode used to store Video Data in (VCD, SVCD, CD-i).  This mode is often used in combination with M2F1 in the same track.  In that case these tracks are often referred to as Mode 2 Mixed mode tracks