IPhone :: Transfer A Video Back Onto 4 In The Photo App?

i have a video that i originally took using my iphone but then transfered to my pc. i want to put it back onto my iphone in the photo app (not video app) so i can share it straight from my phone.

since one of the iphone updates enabled the volume button as a camera shutter button and i was shooting the video one handed, i held the camera with the volume buttons on top. unfortunatly, the phone still saves it in such a way that only the iphone and itunes recognize the proper orientation intended and when it's opened with any other device or program, it automatically makes the part of the video that's against the smooth side of the phone always the top side (regardless of if that makes the video sideways or upside down). i was able to get the video back onto my phone as a "video" where it shows up in the video app as a "movie" and there are no options to share via text, email, Internet (which were options when the video was still in the photo app). i need to be able to share the video with family

info:
iphone 4