transfer video

So I happened to move about 30 GB of my personal trip videos from PC to iPad and they ended up in TV app (not in Photos). Now after a while I need them back to PC since I accidentally deleted those videos from my computer (Win 10) and have them only on iPad now. Is there way to transfer them...

I have a iPad mini and an android mobile phone I intend to transfer a video that is on Google Drive to the iPad but I have no option available on the iPad; on the other way, PC has the option to download. What can I do to overcome this? Thank you very much

I have a video that is on my PC and somehow I got it onto a new iPad Air 2 (non-Apple person here) but now I need to add it to one of the photo albums. Currently the video is in the video folder. I tried several apps, including iTunes to get the video from my Windows PC to the iPad. Not sure...