Xilisoft's "DVD Ripper" software for PC is designed for converting the video on a DVD to a digital media file on your computer. However, sometimes the software can be subject to sync errors: moments when the actors in a movie have their lips moving, but the voice track plays out of synchronisation with the video. These distracting errors have several causes.
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Many sync issues in Xilisoft or any other DVD ripping program are due to problems with the physical disc itself. If a disc is dirty or scratched, the tracks on it can become difficult to play and develop a slight delay. You will not notice this delay except when the audio and video slip out of synchronisation. Such errors can be fixed by cleaning the disc with a disc cleaning solution. If the disc is scratched, it may need to be treated with a resurfacing paste or serviced by a professional resurfacing company.
DVD Driver Issues
If your DVD drive's drivers are out of date, the drive may be incompatible with the Xilisoft DVD ripper. Incompatible drives may function at a reduced capacity, ripping audio and video imperfectly and out of sync. Visit the website for the company that makes your DVD drive to download the latest version of the driver software. The site may also list updated firmware, operating software for the drive, and this should also be installed if it has been released more recently than the date you bought your drive or computer.
Video Codec Issues
The Xilisoft DVD ripping software does not contain its own video encoding protocols. It accesses the protocols for existing video formats installed on your computer such as QuickTime and DivX. If one video format consistently displays sync issues when encoded with Xilisoft, that format's software may need to be updated before Xilisoft will encode correctly. Visit the website for the format in question (quicktime.com, divx.com, etc.) and download the latest version of the software. If the video displaying sync issues is the AVI format, run "Windows Update" from your Start menu to bring this codec up to date.
Xilisoft will have trouble encoding a video where the bitrate (the amount of data used to display the video) is too low without picture noise, sound errors and sync issues. Do not attempt to encode videos at any rate lower than the standard preset for iPod devices, or these may fall out of sync.
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