Newbie here, I apologize if I'm asking a question already answered somewhere else... no luck in my searching/guide browsing, but maybe I just don't know what I'm looking for... I have a rediculously tall stack of DVDs (Aussie Open tennis matches) I've burned off TV using my Sony DVDirect stand-alone burner. I'd like to reduce my stack by 50% by re-burning these matches onto dual-layer disks. I understand usually you would convert the DVD files (.ifo, .bup, .vob structure) into mpeg or something, but I want to retain as much quality as possible and it sounds like this conversion process results in loss of quality. I got HD just for this tourney, so seems like a shame to take these beautiful HD recordings and turn around and reduce the quality in the burning process. So my question: what do I need to do to take the video_ts files from 2 existing DVDs and burn them both to 1 dual-layer DVD without doing a conversion that will reduce quality? Is this something Nero can do? I tried to use Nero Burning ROM, and it gets mad because the .vob files from Disk 1 and Disk 2 have the same file names (and I guess you can't just rename them). If not Nero, I'm happy to acquire whatever else I need. Thanks in advance for your help!