Region Code Enhancement

Never really wondered before, but what does the Region Code Enhancement selection do. Region Code is disabled in a seperate checkbox. I admid I keep forgetting to select the correct Disc region code, and dont seeany real problems.

Regional Coding enhancement(RCE) is an additional layer of protection which some studios have placed on select REGION 1 DVDs to prevent them from playing on region-free or multi-region players. Region Coding is a part of the DVD spec which divides the world into 8 regions:
Region 1: U.S., Canada, U.S. Territories
Region 2: Japan, Europe, South Africa, and Middle East (including Egypt)
Region 3: Southeast Asia and East Asia (including Hong Kong)
Region 4: Australia, New Zealand, Pacific Islands, Central America, Mexico, South America, and the Caribbean
Region 5: Eastern Europe (Former Soviet Union), Indian subcontinent, Africa, North Korea, and Mongolia
Region 6: China
Region 7: Reserved
Region 8: Special international venues (airplanes, cruise ships, etc.)

Basically, DVDs released in each region will typically only play on players sold in that region. IE a DVD released in the UK Region 2 would not play on a player sold in the us Region 1. You can tell what Region a DVD is coded for by looking at the back of the box for a Globe with a number on it. The number correlates to the region list above. If a DVD is listed as ‘Region 0’ it means that it isn’t coded for any region and should play on ALL regions players.

It’s a 2nd level of region coding. One level (RC) is in VIDEO_TS.IFO (VMGM_MAT table at byte 0x23).

On the other hand, RCE is in the DVD’s navigation commands. Basically, it reads the region code of your player (SPRM 20) and compares that to a value. If the comparison is “OK” it continues on and plays the DVD. If not, it says you can’t play the disc. Bloody stupid idea and, IMHO, against trade practices / fair trading laws.