Daniel, just assume your TV have build in media player. It was able to play certain format of movie you had. But after time passes, the standard movie format was changed but your media player in your TV were not upgraded, therefor it no longer able to play newer movie format. It will play the old format of movies, but not the new one (regardless the movie itself is new or old).
This is why there is no absolute answer as yes or no in your case. My lcd from year 2004 might play old movie format, but will not play newer movie format. Most of the time, movie format was totally upgraded into new format as normally new format will take much less space with similar or slight degraded quality.