First off I'm not sure weather this is the correct forum for this to be in. I recently had to format my hard drive and so I backed up all of my data including my videos then put them all back onto the disk once the format and re-install was complete. It seems that my videos look slightly more grainy than they did before the format. At first I thaught it might have been down to the fact I backed them up then put them back onto the disk and maybe lost a little quality so I made a new test video but its the same quality. Does anyone have any ideas on why my videos seem to be more grainy than they did before and how I would go about fixing it? Thanks.