• How to rip CSS-protected DVD to AVI format for DVD backup?

    Posted on January 11th, 2010 Maky | 290 comments

    First of all, to rip CSS-protected DVD to AVI format is possible with DVD decrypter program, but is confined to legal use of the DVD only. CSS-protection measure has long been the practice for preventing commercial DVDs from being copied to hard disk or cloned to reproduction. But we are allowed to use DVD decrypter to clone our expensive store bought CSS-protected DVD for DVD backup. As for DVD backup, it only makes sense to rip DVD to a format with DVD-like quality, smaller size and high portability. So this is why we are going to rip DVD to AVI format for the best DVD backup effort.

    Normally, we need a DVD decrypter and a DVD converter to accomplish the task. But now we have an integrated program with comprehensible interface. It is called Leawo DVD Ripper.

    Leawo DVD Ripper is highly compatible with any CSS-protected DVD. CSS-protected DVD will be recognized and automatically decrypted without our interference. So let’s focus on how to rip DVD to AVI format in high quality, that is, DVD-like quality, smaller size and high portability.

    Here is the Download link to the software. Need more checkups, please visit the DVD Ripper‘s page.

    This is a very comprehensible DVD decrypter/ripper program. Feed the CSS-protected DVD in the DVD-ROM drive and use the "Load DVD" function on the program main interface. Then you will see the complete titles and chapters rolled out on the list more or less like the screenshot below.

    Click open the "Profile" dropdown box, navigate to "Common Video" to make a choice on AVI profiles. We are going to use "Xvid Movie (*.avi)" profile, for the DVD-like picture quality and excellent sound quality. Based on MPEG-4 compression, it can guarantee the best ratio of quality to file size. As Xvid is an open-source codec, Xvid encoded AVI video is highly portable to be played on other PC easily.

    Then click "Settings" to open codec control. You will see a list of codec parameters: Video Codec, Quality, Bit Rate, Video Size, Frame Rate, Aspect Ratio, etc.

    There are quite a number of parameters set to "auto". It means to program will conduct the Xvid encoding with optimal settings. For beginners, this is a very handy design. But for veterans, it might not be enough to meet your picky demands. So let’s explore the optimal settings for ourselves and gain a better understanding of how the DVD to Xvid AVI conversion works. I am going to manifest the difference among the settings of Bit Rate, the key factor which influences the video quality and file size, by a field-test experiment. Feel compelled to follow me?

    In this experiment, I will rip a 9 second segment of DVD to Xvid AVI in different Bit Rate settings. It is a repetitive action and I think it makes more sense to jump to the conclusion now.

    It is all right if this conclusive data table confuses you. It got me, too, in some senses. LOL. What is behind these data is an equation: File Size = (Video Bit Rate + Audio Bit Rate) * duration /8. If you are perceptive, you would notice this is not an accurate equation and there is small discrepancy between the custom video Bit Rate and the actual video Bit Rate. It is because the Video Bit Rate is vibrant but constant. The actual Video Bit Rate reflects the average of Video Bit Rate. The longer duration of the video is converted, the more approximate the actual Video Bit Rate is to the custom Video Bit Rate.

    Take a 2 hour DVD movie for example, you can be assured to count on the custom Video Bit Rate, say 600, with 128kbps Audio Bit Rate to come up with a 650MB AVI video. ((600+128)*7200/8=655200) By doing this, you have reduced the 4GB DVD movie to 1/6 in size!

    Of course, DVD backup won’t be a valuable one if it doesn’t have DVD-like picture quality. Take a look at the comparison of the screenshots from 600Kbps Video Bit Rate setting, Low Profile, Medium Profile and High Profile.

    Click the links to view the screenshots in full size 720*406.

    600Kbps and Low Profile have just been crossed off because of interior picture quality, while Medium Profile and High Profile are almost the same. If you take the 1.5 times file size multiplication lightly, High Quality Profile is your best choice. Otherwise, Medium Profile is the optimal choice for ripping DVD to Xvid AVI format for DVD backup, with good balance of video quality and file size.

    In conclusion, rip CSS-protected DVD to Xvid format with Medium Profile in Leawo DVD Ripper is the optimal choice for DVD backup. However, this article encourages you to look deeper into the video conversion and use the DVD decrypter/ripper program well. It gives you a picture of how picture quality is in connection with Video Bit Rate. Try to experiment with any Bit Rate setting you want, then you can get the most desirable DVD backup copy of your CSS-protected DVD!

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