If you explore the DVD on your computer, you’ll see the DVD folder Video_TS and Audio_TS. If you open the folder Video_TS, you’ll see that the extensions of the files are .vob, .ifo and .bup. The .vob files are the .mpeg or video files and only these files contain video. The .ifo files contain information like scenes and time. The .bup files are backup files of the .ifo files.
If you double click a .vob file and you do not have any DVD player installed on your computer, the computer will say it cannot open the file. But there is a trick to let your computer play this file.
The trick to play this file is to copy the .vob files to a folder on your hard drive, then change the file extension into .mpg. But there is no guarantee that it works because this depends on the codecs you have installed on your computer. But often this trick will work.
But what’s the solution if the above doesn’t work?
You can rip DVD on Win 7 using DVD ripping tools. These tools can copy and convert the .vob files so they can be played on your computer. The most DVD ripping tools can rip your DVD to .avi, or .asf, or .mp4, or .3gp files etc. Like Blaze DVD Copy freeware not only Clone DVD to DVD+/-R, DVD+/-RW, DVD+/-R DL etc. but also rip DVD videos to AVI, ASF, 3GP for Smart Phone, iPod, iPod Touch, iPhone, Apple TV, iPad, iPad 2, BlackBerry, PSP to fit for your devices. It can also extract DVD audio and save as different audio formats such as MP2, MP3, AAC, AC3.
You will find many tools and also many free tools about DVD ripping on the Internet. You can search in Google such as free dvd ripping tool, dvd ripper, rip dvd, rip dvd on win 7 and so on, you will find the DVD tool you need.
When we choose the DVD ripper, there are some things we should be concerned with. First, a dvd ripper should have the capability of decoding a variety of different dvd formats and encoding a variety of different output formats. Second, your dvd ripper should have high quality time encoding so that the audio and video properly sync with high output quality as you expected. Third, the ripping speed should be fast. Fourth, the software should be perfectly compatible with your computer. These are the most important factors, others also should be considered such as budget, interface, technical support, batch mode and so on.
