It is interesting that most movies and shows that were recorded on celuloid or similar media will be inherrently HD and fairly easily made available for HD broadcasts, however, the so-called modern technology of video-cams essentially use SDTV quality. Many daytime TV shows and series have been recorded at this lower definition quality.
So it will seem odd that many old movies using an apparent old technology, i.e. made before videotape, will be convertable to HD while a great deal of modern material will remain forever at the lower quality. I suspect that current video-cam technology will be seen as an unfortunate low quality blip in the history of TV and Film.