What kind of closed captioning and/or subtitling is supported by DVD?
DVD supports both NTSC closed captioning (CC1-CC4) and subtitles (32 tracks). In the case of closed captioning, the captions are usually decoded and displayed by the TV, so they are controlled using the TV’s menu or remote. Subtitles are controlled by the DVD player and can be turned on/off with the player’s remote or by commands in the DVD menus. DVD does not support Teletext, which is the PAL standard for closed captioning.