I've been having all sorts of problems generating videos from CloneDVD Mobile for my PSP in 720x480 resolution. Its totally hit or miss. Some mp4 files only have audio, the video portion of the mp4 appears as just a black screen upon playback in Quicktime on my PC. I'm converting these files for use on my PSP, and I can always watch the videos I create for my PSP via CloneMobile DVD on my PC by using Quicktime. However, these 720x480 files that don't have Video, won't even play on my PSP. My PSP says "The Video can not be played." If I select the 480x272 resolution I've never had a problem with the video of the mp4 not working. What's frustrating is that the 720x480 conversion is so processor intensive that generating a 800MB file sometimes takes six to eight hours, only to find out I've got nothing but audio and a black screen for video. To repeat, I can always get the same disc to generate a working mp4 in 480x272 resolution for my PSP. I can play the mp4 in quicktime on my PC as well. However, when I select the 720x480 resolution it seems that it only intermittently works. Again if I use 480x272 resolution I always get working mp4 (video and audio). What is causing the mp4 files to have nothing for video, or to just have a black screen when I attempt to play 'em back in Quicktime once the conversion is finished? This seems to have only started occurring since the latest upgrade to CloneDVD Mobile. I don't remember this happening ever before. Then again I very rarely make my videos in 720x480. Its really just for stuff I really want to enjoy... I've reprocessed the same task three times now and no video, nothing but a black screen. I've never had any type of problems with CloneDVD Mobile before. Is there a problem with the current release of CloneDVD Mobile for 720x480 file creation?