Are you getting error messages while trying to play it on your iPod Touch? If yes, then don't worry. Just convert it in iPod Touch supported file format and enjoy it. Actually DVD files format are not supported by most of the device including iPod and as a consequence when you try to play it then you will get various error messages like file format is not supported, fails to play this file and so on. However you can play it by using converting the file format. You can take help of software to do so. These softwares are very simple and completely safe. Due to read only nature, it is very completely safe and does not affect the quality of file while converting it.