That's weird. If you are talking about Right-click/Details/Content, I have never seen any Video or Audio information for any file I check, including complete ones, including these. My guess is you must be using something other than what I use for an emule client and that your client actually reads a file and gives you some information! If that is the case, it shouldn't surprise me if that information changes when the file is complete.
Aha! I always wondered how non-deliberate frame rate changes get introduced. I would not dare deliberately change a frame rate unless I knew what I was doing and knew what the results would be. (Such as an industry professional converting a 24fps movie to a 30fps NTSC DVD.) It seems super-obvious to me that the DEFAULT should be "same as original source", and someone who knows what they are doing should change it if they want to! Wikipedia says Handbrake "was originally developed in 2003 by Eric Petit to make ripping DVDs to a data storage device easier." OK, I guess I understand the reason for the original HandBrake default value, but not the reason why it has not been changed. I don't use HandBrake much but I know it does more than just rip DVDs. Frame rate is part of basic mediainfo that it ought to be able to read from the source and use as the default, so if it rips an NTSC DVD it would still default to a 30fps result, and a PAL to a 25fps. I need to talk to those volunteer developers, I guess.Many people use HandBrake for decoding videos. Its default framerate is set to 30 fps and people just click "start" and don't change it back to the original framrate of the source file.
I wish I could comment on the movie this thread is about but I have not watched it yet.