There ae several companies that offer conversion boxes that allow one to adjust the aspect ratio through their televisions, and several programs that also allow for the same adjustments on your computer.

Just do a search on-line, and you will see a few links to various manufactuers of these items.

It should be noted, however, that you may want to take note of what these various developers of these converters say about the quality/cons of adjusting aspect ratios through the television.

In a nut shell, yes, it can be done, but don't expect exceptional results when these ratios are changed on the consumers end.

I am not as "techo-savvy" in regards to film formats, ratios, etc., as I am with computers and their various programs, so perhaps someone here who is more familiar with such can give a more detailed insight as to just exactly why these changes through converter boxes don't offer the results we would hope they could/would.