Hello, I am posting this question on several forums to try and get some clear and concise feedback. I know that this type of question has been asked before, but I have not come upon a clear answer yet, and I am trying to understand more about this particular topic. For quite some time now, I have been using Visual Hub to convert my HD MKV movie files to MP4's for viewing on the Apple TV, and on my MacBook Pro in iTunes. I normally drag the MKV into Visual Hub, select Apple TV from the drop down menu, change the slider to "Go Nuts", check the "H.264" box, and click go. 2-3 hours later, my file is done, and I have a fresh new MP4 file that I plop onto my external hard drive, sync with iTunes, and then stream to my AppleTV. Heres the question... I know that when converting the MKV files to MP4 using the AppleTV setting, the resolution of the file is changed as part of the transcoding process. With that said, I am wondering if I am losing a good amount of quality by doing this. The real question is if I should be going into the advanced options of Visual Hub, and manually inputing the resolution of the original MKV file, which for 1080i movies wold be 1920x1080, and then doing the same for the 720p movies I have. Would this make any real difference? I know that when the resolution of the file is cut in half during the transcoding process to convert to Apple TV format, I must be losing some quality...I feel like this is a stupid question, but I just want to make sure. I have spent a few hours testing the theory out. I connected my MacBook Pro directly to my 42" Vizio HDTV via DVI>HDMI, plugged the macbook in, shut the lid, and then used an apple remote to turn the machine on. This apparently, is the only way to get a full 1080i output from the MacBook Pro. If you simply connect the computer to the TV while the lid is open (without the power cord connected) the output is forced into 4:3, and unfortunately there is no overscan option on my tv. Please correct me if I am wrong in the above stated process, or if there is an easier method. Anyway, when connecting the MacBook to my Vizio, I have opened an original MKV file in VLC, and then opened the transcoded MP4 file (formatted for Apple TV) in VLC for comparison. Obviously, the MKV file fills the entire screen at the 1920x1080 resolution, whereas the MP4 only fills about half of the screen, as the resolution is almost cut in half (or more sometimes). It is hard to tell really, but I feel as if I am losing a good amount of quality by not keeping the original resolution in tact when transcoding for Apple TV with Visual Hub. And, again, I feel like this is a stupid question, so please take it easy on the responses! I appreciate any feedback...I have 8 new movies that I am waiting to convert for Apple TV viewing, and rather than continue with what I have been doing (with the other 42 movies I have already) I would like some feedback on this. Also, I would like some feedback on what people think of the WD TV media player. I JUST recently came across this little device. If you aren't familiar, it is a set top box that allows you to plug in practically any hard drive, and it will playback almost ANY media file, including MKV files, directly to your HDTV via HDMI. It seems to me that this would be a better route for most people like me....It woud save HOURS upon HOURS of transcoding time, and in addition, you would no longer have to keep iTunes open with the computer running anytime you want to watch a movie. I know alot of people using MacBooks with an External HD who stream to an Apple TV...between transcoding, and the external hd, and streaming....its just such a pain. It seems like this WD TV would be a pretty sinmple solution. I wish the Apple TV would support MKV playback, and I REALLY wish they would open up the freaking USB port so we could just plus our external HD's in!! Until then, I might spend the $100 for the WD TV while the Apple TV sits and collects dusts....thoughts?? Long post, I know...but thanks in advance!!