I just saw your new thread but, for continuation, I add here. I am not sure whether or not you had tried anything on the SD card directly BEFORE you copied the corrupted file to your PC for fix. As the IMPORTANT NOTE on the recovery site says, it is indeed “the less modifications you do on your storage media that holds damaged video file(s), the higher the chance for recovery!” So, depending on how badly corrupted the video file was on the SD card, the current state of your recovered file might be as good as it could get. If it’s not too late, you might want to try digital forensics… I suggest that you take a look at the comment of “9. Arch” further down in the comment section of the recovery site I referred to.