Quality of mp4 files on ipad

[dcb3354]

If I tranfer an mp4 video to ipad via itunes and play it looks great. If I upload the same mp4 to my google drive and access the movie through the google drive app on my ipad the movie is inferior quality. Question -- am i using the same video player either way to play back the movie or if by viewing the google drive file am i using an inferior player to the ipad native player?? Also, can anyone tell me if when I click on the movie file under my ipad google drive app, is the movie streaming from google servers rather than residing on my ipad harddrive like the videos in the Video app that the ipad comes with? Many thanks for anyone that can clear this up for me