The Blu-ray player can play American DVD films if they come from the appropriate region or if the player is region-free. DVD players are often region-locked by default, but models such as the Panasonic DP-UB420 are region-free and can play DVDs from all regions (0-8). For the DP-UB424 (DP-UB424EGK) there is no explicit indication of region freedom, but it is common for Panasonic 4K Blu-ray players to be able to play DVDs from different regions. To make sure that the player plays American DVDs (Region 1) without restrictions, we recommend checking the region settings carefully or updating the firmware if available.