Do you mean HD rips? If so, they work just fine with srt & sub files. Anyways you can download subtitles from the following sites: Subscene Opensubtitles Subtitles.Images
There are other sites as well but i think they will suffice.
hello guys, i have a subtitle that for dvdrip version(1.3GB), and i have a movie that is hd-rip(8gb). and i want to make the subtitle work perfect with the movie.Is there a way to make it?? or is there any site , where can i download???