All of a sudden (within the last 2 days) I am having problems ripping DVDs to mp4 files. I have been ripping movies to mp4 files for my PSP using the the 480x272 AVC/H264 setting for the past couple weeks without any problems. For some reason, for the last couple of days, everytime that I rip a DVD I get a mp4 file that has no picture...just sound. If I use the generic MPEG4 setting, it still works fine...but the AVC/H264 setting is giving me problems. Is there any reason why it would work initially, and then have problems? I'm very perplexed, and I like the AVC/H264 video quality MUCH better than the generic MPEG4. Has anyone experienced this? Can anyone help me?