I went to YouTube to see if there were any Indiana Jones trailers, and although there are plenty of them, they are all fan made and are therefore pretty useless.
This one is the best of the lot - although the pomposity of the voice-over gets annoying.
Below is a grainy video that someone made of Harrison Ford and Callista Flockhart eating at an outdoor dining area during the filming of the movie. He's not in costume. The comments at YouTube are hilarious - the more so because the film was obviously made from a long way away, there was nobody pushing their way up to the man asking for autographs, etc., nothing paparazzi like about it.
Nothing really worth watching, either. (Now if it had been 20 years ago when he was in his prime...)