I've got the trial version of WinAvi 7.1. I've downloaded the K-Lite Mega Codec pack too. I want to convert VOB files to AVI but when I do I get audio with no video. I tried the support page for WinAvi which says if I have a Nvidia graphics card I should uncheck the 'full screen video' option to solve this problem. But I can't find the 'full screen video' option in either WinAvi OR the Nvidia options. Please help.
Read this guide, I recommend it over using winavi... http://rita.lt/guides/AutoGK_DVDtoAVI.htm Enjoy!
Maybe you can do this: When you do the vob to avi conversion,you can find advance option,click it,then you can see "video encoder",you can change it to "divx",maybe it will goes well.