Hello, it is probably known, that iTunes is not good at playing videos. I never bothered, because I used Quicktime and VLC (I know there are things like mplayer or XMBC, etc.), now I had to discover HOW bad iTunes actually is. My mother can only handle iTunes, where she can pick the videos from the list and I couldn't encourage her to use VLC and/or QT. I had to convert some small movies for her (actually cartoon for my niece and nephews). On my iBook G4, 1,33GHz, 1,5GB RAM (1024x867 resolution) I discovered, that not the profile/level used in x264 is important, but the resolution. Actually in the beginning I even tried divx (or xvid?) and even there the movies won't play, if larger than 640x360. I found that pretty interesting and couldn't really believe it. I also wondered, why other encodes, that I didn't do myself and downloaded from the internet were playing nice. Having a closer look, I saw that there are files with high@3 and even they play, but!!! they are 640x360, too. I never actually cared much, because with QT/VLC I never had a reason to bother (they play higher resolutions and also just drop frames, if it is too much, other than iTunes, which hangs up and does big jumps). I asked in the Handbrake forum and even there the single guy that answered (with a MDD single 1,25GHz) said, that usually mp4v2 divx should play at higher resolutions with bitrates of 700-3000kbps. (None of anything I tried in that range would play properly, as long as I didn't restrict the size to 640x360). He didn't test it though, but said that he "remembered" that this should work. So,... (I mean, my assumption was that divx shouldn't be a problem, since it is less demanding anyway.) Later I tried different sound codecs (within the movie files) in iTunes and I found out that only AAC would be playable (not MP3, which I thought should work, since iTunes plays music mp3s. Not AC3). (That is under 10.4). I wonder, if this issue might be related to Handbrake. I used version 10 (encoded on my Intel Mini). I have yet to test, if maybe Handbrake 9.0.4 would produce playable stuff for iTunes at higher resolutions. I also didn't test, if Avidemux or Mpegstreamclip will yield different results. Why do I think it is Handbrake? I read that Handbrake encodes have been trouble for AppleTVs ever since, even though there is an actual AppleTV-preset. There are also the video FAQs in this forum here, that don't even mention iTunes, probably because the problems are known. Did you have similar experiences? I mean, why wouldn't it even play simple divx/xvid? (please post your machine and OS, when you answer) SORRY FOR THE LONG NOT SO STRAIGHT FORWARD POST!