The world of DVD players and DVDs is divided into 6 regions around the world. US and Canada make up the Region 1, thus all the DVD players and DVDs sold in the US are marked Region 1. These DVD players will only play DVDs that are labeled Region 1 or Region ALL (compatible with all regions). Similarly, countries in Europe are part of the Region 2, thus DVDs from these countries are marked Region 2 thus, they can't be played on US region 1 DVD players and vice versa. The chart below shows rest of the regions around the world.
Prior to the division of world into different DVD regions, PAL/NTSC/SECAM video standards were already in place. Therefore, these video standards are still in affect among the DVD players around the world. US and Canada belong to the NTSC standard and Europe is predominantly PAL. Most of the DVD players will only play NTSC DVDs on NTSC TV and PAL DVDs on PAL TV. There are few DVD players with built-in video converter which will allow you to play PAL DVDs on any (NTSC/PAL) TV. Chart below shows the video standard division around the globe.
For questions, feel free to call us at 773-761-8175